---
_id: '107'
abstract:
- lang: eng
text: 'We introduce the notion of “non-malleable codes” which relaxes the notion
of error correction and error detection. Informally, a code is non-malleable if
the message contained in a modified codeword is either the original message, or
a completely unrelated value. In contrast to error correction and error detection,
non-malleability can be achieved for very rich classes of modifications. We construct
an efficient code that is non-malleable with respect to modifications that affect
each bit of the codeword arbitrarily (i.e., leave it untouched, flip it, or set
it to either 0 or 1), but independently of the value of the other bits of the
codeword. Using the probabilistic method, we also show a very strong and general
statement: there exists a non-malleable code for every “small enough” family F
of functions via which codewords can be modified. Although this probabilistic
method argument does not directly yield efficient constructions, it gives us efficient
non-malleable codes in the random-oracle model for very general classes of tampering
functions—e.g., functions where every bit in the tampered codeword can depend
arbitrarily on any 99% of the bits in the original codeword. As an application
of non-malleable codes, we show that they provide an elegant algorithmic solution
to the task of protecting functionalities implemented in hardware (e.g., signature
cards) against “tampering attacks.” In such attacks, the secret state of a physical
system is tampered, in the hopes that future interaction with the modified system
will reveal some secret information. This problem was previously studied in the
work of Gennaro et al. in 2004 under the name “algorithmic tamper proof security”
(ATP). We show that non-malleable codes can be used to achieve important improvements
over the prior work. In particular, we show that any functionality can be made
secure against a large class of tampering attacks, simply by encoding the secret
state with a non-malleable code while it is stored in memory.'
article_number: '20'
article_processing_charge: No
article_type: original
author:
- first_name: Stefan
full_name: Dziembowski, Stefan
last_name: Dziembowski
- first_name: Krzysztof Z
full_name: Pietrzak, Krzysztof Z
id: 3E04A7AA-F248-11E8-B48F-1D18A9856A87
last_name: Pietrzak
orcid: 0000-0002-9139-1654
- first_name: Daniel
full_name: Wichs, Daniel
last_name: Wichs
citation:
ama: Dziembowski S, Pietrzak KZ, Wichs D. Non-malleable codes. Journal of the
ACM. 2018;65(4). doi:10.1145/3178432
apa: Dziembowski, S., Pietrzak, K. Z., & Wichs, D. (2018). Non-malleable codes.
Journal of the ACM. ACM. https://doi.org/10.1145/3178432
chicago: Dziembowski, Stefan, Krzysztof Z Pietrzak, and Daniel Wichs. “Non-Malleable
Codes.” Journal of the ACM. ACM, 2018. https://doi.org/10.1145/3178432.
ieee: S. Dziembowski, K. Z. Pietrzak, and D. Wichs, “Non-malleable codes,” Journal
of the ACM, vol. 65, no. 4. ACM, 2018.
ista: Dziembowski S, Pietrzak KZ, Wichs D. 2018. Non-malleable codes. Journal of
the ACM. 65(4), 20.
mla: Dziembowski, Stefan, et al. “Non-Malleable Codes.” Journal of the ACM,
vol. 65, no. 4, 20, ACM, 2018, doi:10.1145/3178432.
short: S. Dziembowski, K.Z. Pietrzak, D. Wichs, Journal of the ACM 65 (2018).
date_created: 2018-12-11T11:44:40Z
date_published: 2018-08-01T00:00:00Z
date_updated: 2023-09-13T09:05:17Z
day: '01'
department:
- _id: KrPi
doi: 10.1145/3178432
ec_funded: 1
external_id:
isi:
- '000442938200004'
intvolume: ' 65'
isi: 1
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://eprint.iacr.org/2009/608
month: '08'
oa: 1
oa_version: Preprint
project:
- _id: 258AA5B2-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '682815'
name: Teaching Old Crypto New Tricks
- _id: 258C570E-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '259668'
name: Provable Security for Physical Cryptography
publication: Journal of the ACM
publication_status: published
publisher: ACM
publist_id: '7947'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Non-malleable codes
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 65
year: '2018'
...
---
_id: '108'
abstract:
- lang: eng
text: Universal hashing found a lot of applications in computer science. In cryptography
the most important fact about universal families is the so called Leftover Hash
Lemma, proved by Impagliazzo, Levin and Luby. In the language of modern cryptography
it states that almost universal families are good extractors. In this work we
provide a somewhat surprising characterization in the opposite direction. Namely,
every extractor with sufficiently good parameters yields a universal family on
a noticeable fraction of its inputs. Our proof technique is based on tools from
extremal graph theory applied to the \'collision graph\' induced by the extractor,
and may be of independent interest. We discuss possible applications to the theory
of randomness extractors and non-malleable codes.
alternative_title:
- ISIT Proceedings
article_processing_charge: No
author:
- first_name: Marciej
full_name: Obremski, Marciej
last_name: Obremski
- first_name: Maciej
full_name: Skorski, Maciej
id: EC09FA6A-02D0-11E9-8223-86B7C91467DD
last_name: Skorski
citation:
ama: 'Obremski M, Skórski M. Inverted leftover hash lemma. In: Vol 2018. IEEE; 2018.
doi:10.1109/ISIT.2018.8437654'
apa: 'Obremski, M., & Skórski, M. (2018). Inverted leftover hash lemma (Vol.
2018). Presented at the ISIT: International Symposium on Information Theory, Vail,
CO, USA: IEEE. https://doi.org/10.1109/ISIT.2018.8437654'
chicago: Obremski, Marciej, and Maciej Skórski. “Inverted Leftover Hash Lemma,”
Vol. 2018. IEEE, 2018. https://doi.org/10.1109/ISIT.2018.8437654.
ieee: 'M. Obremski and M. Skórski, “Inverted leftover hash lemma,” presented at
the ISIT: International Symposium on Information Theory, Vail, CO, USA, 2018,
vol. 2018.'
ista: 'Obremski M, Skórski M. 2018. Inverted leftover hash lemma. ISIT: International
Symposium on Information Theory, ISIT Proceedings, vol. 2018.'
mla: Obremski, Marciej, and Maciej Skórski. Inverted Leftover Hash Lemma.
Vol. 2018, IEEE, 2018, doi:10.1109/ISIT.2018.8437654.
short: M. Obremski, M. Skórski, in:, IEEE, 2018.
conference:
end_date: 2018-06-22
location: Vail, CO, USA
name: 'ISIT: International Symposium on Information Theory'
start_date: '2018-06-17 '
date_created: 2018-12-11T11:44:40Z
date_published: 2018-08-16T00:00:00Z
date_updated: 2023-09-13T08:23:18Z
day: '16'
department:
- _id: KrPi
doi: 10.1109/ISIT.2018.8437654
external_id:
isi:
- '000448139300368'
intvolume: ' 2018'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://eprint.iacr.org/2017/507
month: '08'
oa: 1
oa_version: Submitted Version
publication_status: published
publisher: IEEE
publist_id: '7946'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Inverted leftover hash lemma
type: conference
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 2018
year: '2018'
...
---
_id: '10864'
abstract:
- lang: eng
text: We prove that every congruence distributive variety has directed Jónsson terms,
and every congruence modular variety has directed Gumm terms. The directed terms
we construct witness every case of absorption witnessed by the original Jónsson
or Gumm terms. This result is equivalent to a pair of claims about absorption
for admissible preorders in congruence distributive and congruence modular varieties,
respectively. For finite algebras, these absorption theorems have already seen
significant applications, but until now, it was not clear if the theorems hold
for general algebras as well. Our method also yields a novel proof of a result
by P. Lipparini about the existence of a chain of terms (which we call Pixley
terms) in varieties that are at the same time congruence distributive and k-permutable
for some k.
acknowledgement: The second author was supported by National Science Center grant
DEC-2011-/01/B/ST6/01006.
article_processing_charge: No
arxiv: 1
author:
- first_name: Alexandr
full_name: Kazda, Alexandr
id: 3B32BAA8-F248-11E8-B48F-1D18A9856A87
last_name: Kazda
- first_name: Marcin
full_name: Kozik, Marcin
last_name: Kozik
- first_name: Ralph
full_name: McKenzie, Ralph
last_name: McKenzie
- first_name: Matthew
full_name: Moore, Matthew
last_name: Moore
citation:
ama: 'Kazda A, Kozik M, McKenzie R, Moore M. Absorption and directed Jónsson terms.
In: Czelakowski J, ed. Don Pigozzi on Abstract Algebraic Logic, Universal Algebra,
and Computer Science. Vol 16. OCTR. Cham: Springer Nature; 2018:203-220. doi:10.1007/978-3-319-74772-9_7'
apa: 'Kazda, A., Kozik, M., McKenzie, R., & Moore, M. (2018). Absorption and
directed Jónsson terms. In J. Czelakowski (Ed.), Don Pigozzi on Abstract Algebraic
Logic, Universal Algebra, and Computer Science (Vol. 16, pp. 203–220). Cham:
Springer Nature. https://doi.org/10.1007/978-3-319-74772-9_7'
chicago: 'Kazda, Alexandr, Marcin Kozik, Ralph McKenzie, and Matthew Moore. “Absorption
and Directed Jónsson Terms.” In Don Pigozzi on Abstract Algebraic Logic, Universal
Algebra, and Computer Science, edited by J Czelakowski, 16:203–20. OCTR. Cham:
Springer Nature, 2018. https://doi.org/10.1007/978-3-319-74772-9_7.'
ieee: 'A. Kazda, M. Kozik, R. McKenzie, and M. Moore, “Absorption and directed Jónsson
terms,” in Don Pigozzi on Abstract Algebraic Logic, Universal Algebra, and
Computer Science, vol. 16, J. Czelakowski, Ed. Cham: Springer Nature, 2018,
pp. 203–220.'
ista: 'Kazda A, Kozik M, McKenzie R, Moore M. 2018.Absorption and directed Jónsson
terms. In: Don Pigozzi on Abstract Algebraic Logic, Universal Algebra, and Computer
Science. vol. 16, 203–220.'
mla: Kazda, Alexandr, et al. “Absorption and Directed Jónsson Terms.” Don Pigozzi
on Abstract Algebraic Logic, Universal Algebra, and Computer Science, edited
by J Czelakowski, vol. 16, Springer Nature, 2018, pp. 203–20, doi:10.1007/978-3-319-74772-9_7.
short: A. Kazda, M. Kozik, R. McKenzie, M. Moore, in:, J. Czelakowski (Ed.), Don
Pigozzi on Abstract Algebraic Logic, Universal Algebra, and Computer Science,
Springer Nature, Cham, 2018, pp. 203–220.
date_created: 2022-03-18T10:30:32Z
date_published: 2018-03-21T00:00:00Z
date_updated: 2023-09-05T15:37:18Z
day: '21'
department:
- _id: VlKo
doi: 10.1007/978-3-319-74772-9_7
editor:
- first_name: J
full_name: Czelakowski, J
last_name: Czelakowski
external_id:
arxiv:
- '1502.01072'
intvolume: ' 16'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1502.01072
month: '03'
oa: 1
oa_version: Preprint
page: 203-220
place: Cham
publication: Don Pigozzi on Abstract Algebraic Logic, Universal Algebra, and Computer
Science
publication_identifier:
eisbn:
- '9783319747729'
eissn:
- 2211-2766
isbn:
- '9783319747712'
issn:
- 2211-2758
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
series_title: OCTR
status: public
title: Absorption and directed Jónsson terms
type: book_chapter
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 16
year: '2018'
...
---
_id: '10880'
abstract:
- lang: eng
text: Acquisition of evolutionary novelties is a fundamental process for adapting
to the external environment and invading new niches and results in the diversification
of life, which we can see in the world today. How such novel phenotypic traits
are acquired in the course of evolution and are built up in developing embryos
has been a central question in biology. Whole-genome duplication (WGD) is a process
of genome doubling that supplies raw genetic materials and increases genome complexity.
Recently, it has been gradually revealed that WGD and subsequent fate changes
of duplicated genes can facilitate phenotypic evolution. Here, we review the current
understanding of the relationship between WGD and the acquisition of evolutionary
novelties. We show some examples of this link and discuss how WGD and subsequent
duplicated genes can facilitate phenotypic evolution as well as when such genomic
doubling can be advantageous for adaptation.
acknowledgement: This work was supported by JSPS overseas research fellowships (Y.M.)
and SENSHIN Medical Research Foundation (K.K.T.).
article_processing_charge: No
article_type: original
author:
- first_name: Moriyama
full_name: Yuuta, Moriyama
id: 4968E7C8-F248-11E8-B48F-1D18A9856A87
last_name: Yuuta
orcid: 0000-0002-2853-8051
- first_name: Kazuko
full_name: Koshiba-Takeuchi, Kazuko
last_name: Koshiba-Takeuchi
citation:
ama: Yuuta M, Koshiba-Takeuchi K. Significance of whole-genome duplications on the
emergence of evolutionary novelties. Briefings in Functional Genomics.
2018;17(5):329-338. doi:10.1093/bfgp/ely007
apa: Yuuta, M., & Koshiba-Takeuchi, K. (2018). Significance of whole-genome
duplications on the emergence of evolutionary novelties. Briefings in Functional
Genomics. Oxford University Press. https://doi.org/10.1093/bfgp/ely007
chicago: Yuuta, Moriyama, and Kazuko Koshiba-Takeuchi. “Significance of Whole-Genome
Duplications on the Emergence of Evolutionary Novelties.” Briefings in Functional
Genomics. Oxford University Press, 2018. https://doi.org/10.1093/bfgp/ely007.
ieee: M. Yuuta and K. Koshiba-Takeuchi, “Significance of whole-genome duplications
on the emergence of evolutionary novelties,” Briefings in Functional Genomics,
vol. 17, no. 5. Oxford University Press, pp. 329–338, 2018.
ista: Yuuta M, Koshiba-Takeuchi K. 2018. Significance of whole-genome duplications
on the emergence of evolutionary novelties. Briefings in Functional Genomics.
17(5), 329–338.
mla: Yuuta, Moriyama, and Kazuko Koshiba-Takeuchi. “Significance of Whole-Genome
Duplications on the Emergence of Evolutionary Novelties.” Briefings in Functional
Genomics, vol. 17, no. 5, Oxford University Press, 2018, pp. 329–38, doi:10.1093/bfgp/ely007.
short: M. Yuuta, K. Koshiba-Takeuchi, Briefings in Functional Genomics 17 (2018)
329–338.
date_created: 2022-03-18T12:40:35Z
date_published: 2018-09-01T00:00:00Z
date_updated: 2023-09-19T15:11:22Z
day: '01'
department:
- _id: CaHe
doi: 10.1093/bfgp/ely007
external_id:
isi:
- '000456054400004'
pmid:
- '29579140'
intvolume: ' 17'
isi: 1
issue: '5'
keyword:
- Genetics
- Molecular Biology
- Biochemistry
- General Medicine
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1093/bfgp/ely007
month: '09'
oa: 1
oa_version: Published Version
page: 329-338
pmid: 1
publication: Briefings in Functional Genomics
publication_identifier:
eissn:
- 2041-2657
issn:
- 2041-2649
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: Significance of whole-genome duplications on the emergence of evolutionary
novelties
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 17
year: '2018'
...
---
_id: '10881'
abstract:
- lang: eng
text: Strigolactones (SLs) are a relatively recent addition to the list of plant
hormones that control different aspects of plant development. SL signalling is
perceived by an α/β hydrolase, DWARF 14 (D14). A close homolog of D14, KARRIKIN
INSENSTIVE2 (KAI2), is involved in perception of an uncharacterized molecule called
karrikin (KAR). Recent studies in Arabidopsis identified the SUPPRESSOR OF MAX2
1 (SMAX1) and SMAX1-LIKE 7 (SMXL7) to be potential SCF–MAX2 complex-mediated proteasome
targets of KAI2 and D14, respectively. Genetic studies on SMXL7 and SMAX1 demonstrated
distinct developmental roles for each, but very little is known about these repressors
in terms of their sequence features. In this study, we performed an extensive
comparative analysis of SMXLs and determined their phylogenetic and evolutionary
history in the plant lineage. Our results show that SMXL family members can be
sub-divided into four distinct phylogenetic clades/classes, with an ancient SMAX1.
Further, we identified the clade-specific motifs that have evolved and that might
act as determinants of SL-KAR signalling specificity. These specificities resulted
from functional diversities among the clades. Our results suggest that a gradual
co-evolution of SMXL members with their upstream receptors D14/KAI2 provided an
increased specificity to both the SL perception and response in land plants.
acknowledgement: "This project received funding from the European Union’s Horizon
2020 research and innovation programme under the Marie Skłodowska-Curie Actions
and it is co-financed by the South Moravian Region under grant agreement No. 665860
(SS). Access to computing and storage facilities owned by parties and projects contributing
to the national grid infrastructure, MetaCentrum, provided under the program ‘Projects
of Large Infrastructure for Research, Development, and Innovations’ (LM2010005)
was greatly appreciated (RSV). The project was funded by The Ministry of Education,
Youth and Sports/MES of the Czech Republic under the project CEITEC 2020 (LQ1601)
(TN, TRM). JF was supported by the European Research Council (project ERC-2011-StG
20101109-PSDP) and the Czech Science Foundation GAČR (GA13-40637S). We thank Dr
Kamel Chibani for active discussions on the evolutionary analysis and Nandan Mysore
Vardarajan for his critical comments on the manuscript. This article reflects\r\nonly
the authors’ views, and the EU is not responsible for any use that may be made of
the information it contains. "
article_processing_charge: No
article_type: original
author:
- first_name: Taraka Ramji
full_name: Moturu, Taraka Ramji
last_name: Moturu
- first_name: Sravankumar
full_name: Thula, Sravankumar
last_name: Thula
- first_name: Ravi Kumar
full_name: Singh, Ravi Kumar
last_name: Singh
- first_name: Tomasz
full_name: Nodzyński, Tomasz
last_name: Nodzyński
- first_name: Radka Svobodová
full_name: Vařeková, Radka Svobodová
last_name: Vařeková
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
- first_name: Sibu
full_name: Simon, Sibu
last_name: Simon
citation:
ama: Moturu TR, Thula S, Singh RK, et al. Molecular evolution and diversification
of the SMXL gene family. Journal of Experimental Botany. 2018;69(9):2367-2378.
doi:10.1093/jxb/ery097
apa: Moturu, T. R., Thula, S., Singh, R. K., Nodzyński, T., Vařeková, R. S., Friml,
J., & Simon, S. (2018). Molecular evolution and diversification of the SMXL
gene family. Journal of Experimental Botany. Oxford University Press. https://doi.org/10.1093/jxb/ery097
chicago: Moturu, Taraka Ramji, Sravankumar Thula, Ravi Kumar Singh, Tomasz Nodzyński,
Radka Svobodová Vařeková, Jiří Friml, and Sibu Simon. “Molecular Evolution and
Diversification of the SMXL Gene Family.” Journal of Experimental Botany.
Oxford University Press, 2018. https://doi.org/10.1093/jxb/ery097.
ieee: T. R. Moturu et al., “Molecular evolution and diversification of the
SMXL gene family,” Journal of Experimental Botany, vol. 69, no. 9. Oxford
University Press, pp. 2367–2378, 2018.
ista: Moturu TR, Thula S, Singh RK, Nodzyński T, Vařeková RS, Friml J, Simon S.
2018. Molecular evolution and diversification of the SMXL gene family. Journal
of Experimental Botany. 69(9), 2367–2378.
mla: Moturu, Taraka Ramji, et al. “Molecular Evolution and Diversification of the
SMXL Gene Family.” Journal of Experimental Botany, vol. 69, no. 9, Oxford
University Press, 2018, pp. 2367–78, doi:10.1093/jxb/ery097.
short: T.R. Moturu, S. Thula, R.K. Singh, T. Nodzyński, R.S. Vařeková, J. Friml,
S. Simon, Journal of Experimental Botany 69 (2018) 2367–2378.
date_created: 2022-03-18T12:43:22Z
date_published: 2018-04-13T00:00:00Z
date_updated: 2025-05-07T11:12:33Z
day: '13'
department:
- _id: JiFr
doi: 10.1093/jxb/ery097
ec_funded: 1
external_id:
isi:
- '000430727000016'
pmid:
- '29538714'
intvolume: ' 69'
isi: 1
issue: '9'
keyword:
- Plant Science
- Physiology
language:
- iso: eng
month: '04'
oa_version: None
page: 2367-2378
pmid: 1
project:
- _id: 25716A02-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '282300'
name: Polarity and subcellular dynamics in plants
publication: Journal of Experimental Botany
publication_identifier:
eissn:
- 1460-2431
issn:
- 0022-0957
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: Molecular evolution and diversification of the SMXL gene family
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 69
year: '2018'
...
---
_id: '10882'
abstract:
- lang: eng
text: 'We introduce Intelligent Annotation Dialogs for bounding box annotation.
We train an agent to automatically choose a sequence of actions for a human annotator
to produce a bounding box in a minimal amount of time. Specifically, we consider
two actions: box verification [34], where the annotator verifies a box generated
by an object detector, and manual box drawing. We explore two kinds of agents,
one based on predicting the probability that a box will be positively verified,
and the other based on reinforcement learning. We demonstrate that (1) our agents
are able to learn efficient annotation strategies in several scenarios, automatically
adapting to the image difficulty, the desired quality of the boxes, and the detector
strength; (2) in all scenarios the resulting annotation dialogs speed up annotation
compared to manual box drawing alone and box verification alone, while also outperforming
any fixed combination of verification and drawing in most scenarios; (3) in a
realistic scenario where the detector is iteratively re-trained, our agents evolve
a series of strategies that reflect the shifting trade-off between verification
and drawing as the detector grows stronger.'
article_processing_charge: No
arxiv: 1
author:
- first_name: Jasper
full_name: Uijlings, Jasper
last_name: Uijlings
- first_name: Ksenia
full_name: Konyushkova, Ksenia
last_name: Konyushkova
- first_name: Christoph
full_name: Lampert, Christoph
id: 40C20FD2-F248-11E8-B48F-1D18A9856A87
last_name: Lampert
orcid: 0000-0001-8622-7887
- first_name: Vittorio
full_name: Ferrari, Vittorio
last_name: Ferrari
citation:
ama: 'Uijlings J, Konyushkova K, Lampert C, Ferrari V. Learning intelligent dialogs
for bounding box annotation. In: 2018 IEEE/CVF Conference on Computer Vision
and Pattern Recognition. IEEE; 2018:9175-9184. doi:10.1109/cvpr.2018.00956'
apa: 'Uijlings, J., Konyushkova, K., Lampert, C., & Ferrari, V. (2018). Learning
intelligent dialogs for bounding box annotation. In 2018 IEEE/CVF Conference
on Computer Vision and Pattern Recognition (pp. 9175–9184). Salt Lake City,
UT, United States: IEEE. https://doi.org/10.1109/cvpr.2018.00956'
chicago: Uijlings, Jasper, Ksenia Konyushkova, Christoph Lampert, and Vittorio Ferrari.
“Learning Intelligent Dialogs for Bounding Box Annotation.” In 2018 IEEE/CVF
Conference on Computer Vision and Pattern Recognition, 9175–84. IEEE, 2018.
https://doi.org/10.1109/cvpr.2018.00956.
ieee: J. Uijlings, K. Konyushkova, C. Lampert, and V. Ferrari, “Learning intelligent
dialogs for bounding box annotation,” in 2018 IEEE/CVF Conference on Computer
Vision and Pattern Recognition, Salt Lake City, UT, United States, 2018, pp.
9175–9184.
ista: 'Uijlings J, Konyushkova K, Lampert C, Ferrari V. 2018. Learning intelligent
dialogs for bounding box annotation. 2018 IEEE/CVF Conference on Computer Vision
and Pattern Recognition. CVF: Conference on Computer Vision and Pattern Recognition,
9175–9184.'
mla: Uijlings, Jasper, et al. “Learning Intelligent Dialogs for Bounding Box Annotation.”
2018 IEEE/CVF Conference on Computer Vision and Pattern Recognition, IEEE,
2018, pp. 9175–84, doi:10.1109/cvpr.2018.00956.
short: J. Uijlings, K. Konyushkova, C. Lampert, V. Ferrari, in:, 2018 IEEE/CVF Conference
on Computer Vision and Pattern Recognition, IEEE, 2018, pp. 9175–9184.
conference:
end_date: 2018-06-23
location: Salt Lake City, UT, United States
name: 'CVF: Conference on Computer Vision and Pattern Recognition'
start_date: 2018-06-18
date_created: 2022-03-18T12:45:09Z
date_published: 2018-12-17T00:00:00Z
date_updated: 2023-09-19T15:11:49Z
day: '17'
department:
- _id: ChLa
doi: 10.1109/cvpr.2018.00956
external_id:
arxiv:
- '1712.08087'
isi:
- '000457843609036'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
url: ' https://doi.org/10.48550/arXiv.1712.08087'
month: '12'
oa: 1
oa_version: Preprint
page: 9175-9184
publication: 2018 IEEE/CVF Conference on Computer Vision and Pattern Recognition
publication_identifier:
eissn:
- 2575-7075
isbn:
- '9781538664209'
publication_status: published
publisher: IEEE
quality_controlled: '1'
scopus_import: '1'
status: public
title: Learning intelligent dialogs for bounding box annotation
type: conference
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2018'
...
---
_id: '10883'
abstract:
- lang: eng
text: 'Solving parity games, which are equivalent to modal μ-calculus model checking,
is a central algorithmic problem in formal methods, with applications in reactive
synthesis, program repair, verification of branching-time properties, etc. Besides
the standard compu- tation model with the explicit representation of games, another
important theoretical model of computation is that of set-based symbolic algorithms.
Set-based symbolic algorithms use basic set operations and one-step predecessor
operations on the implicit description of games, rather than the explicit representation.
The significance of symbolic algorithms is that they provide scalable algorithms
for large finite-state systems, as well as for infinite-state systems with finite
quotient. Consider parity games on graphs with n vertices and parity conditions
with d priorities. While there is a rich literature of explicit algorithms for
parity games, the main results for set-based symbolic algorithms are as follows:
(a) the basic algorithm that requires O(nd) symbolic operations and O(d) symbolic
space; and (b) an improved algorithm that requires O(nd/3+1) symbolic operations
and O(n) symbolic space. In this work, our contributions are as follows: (1) We
present a black-box set-based symbolic algorithm based on the explicit progress
measure algorithm. Two important consequences of our algorithm are as follows:
(a) a set-based symbolic algorithm for parity games that requires quasi-polynomially
many symbolic operations and O(n) symbolic space; and (b) any future improvement
in progress measure based explicit algorithms immediately imply an efficiency
improvement in our set-based symbolic algorithm for parity games. (2) We present
a set-based symbolic algorithm that requires quasi-polynomially many symbolic
operations and O(d · log n) symbolic space. Moreover, for the important special
case of d ≤ log n, our algorithm requires only polynomially many symbolic operations
and poly-logarithmic symbolic space.'
acknowledgement: 'A. S. is fully supported by the Vienna Science and Technology Fund
(WWTF) through project ICT15-003. K.C. is supported by the Austrian Science Fund
(FWF) NFN Grant No S11407-N23 (RiSE/SHiNE) and an ERC Starting grant (279307: Graph
Games). For M.H the research leading to these results has received funding from
the European Research Council under the European Union’s Seventh Framework Programme
(FP/2007-2013) /ERC Grant Agreement no. 340506.'
alternative_title:
- EPiC Series in Computing
article_processing_charge: No
arxiv: 1
author:
- first_name: Krishnendu
full_name: Chatterjee, Krishnendu
id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
last_name: Chatterjee
orcid: 0000-0002-4561-241X
- first_name: Wolfgang
full_name: Dvořák, Wolfgang
last_name: Dvořák
- first_name: Monika H
full_name: Henzinger, Monika H
id: 540c9bbd-f2de-11ec-812d-d04a5be85630
last_name: Henzinger
orcid: 0000-0002-5008-6530
- first_name: Alexander
full_name: Svozil, Alexander
last_name: Svozil
citation:
ama: 'Chatterjee K, Dvořák W, Henzinger MH, Svozil A. Quasipolynomial set-based
symbolic algorithms for parity games. In: 22nd International Conference on
Logic for Programming, Artificial Intelligence and Reasoning. Vol 57. EasyChair;
2018:233-253. doi:10.29007/5z5k'
apa: 'Chatterjee, K., Dvořák, W., Henzinger, M. H., & Svozil, A. (2018). Quasipolynomial
set-based symbolic algorithms for parity games. In 22nd International Conference
on Logic for Programming, Artificial Intelligence and Reasoning (Vol. 57,
pp. 233–253). Awassa, Ethiopia: EasyChair. https://doi.org/10.29007/5z5k'
chicago: Chatterjee, Krishnendu, Wolfgang Dvořák, Monika H Henzinger, and Alexander
Svozil. “Quasipolynomial Set-Based Symbolic Algorithms for Parity Games.” In 22nd
International Conference on Logic for Programming, Artificial Intelligence and
Reasoning, 57:233–53. EasyChair, 2018. https://doi.org/10.29007/5z5k.
ieee: K. Chatterjee, W. Dvořák, M. H. Henzinger, and A. Svozil, “Quasipolynomial
set-based symbolic algorithms for parity games,” in 22nd International Conference
on Logic for Programming, Artificial Intelligence and Reasoning, Awassa, Ethiopia,
2018, vol. 57, pp. 233–253.
ista: 'Chatterjee K, Dvořák W, Henzinger MH, Svozil A. 2018. Quasipolynomial set-based
symbolic algorithms for parity games. 22nd International Conference on Logic for
Programming, Artificial Intelligence and Reasoning. LPAR: Conference on Logic
for Programming, Artificial Intelligence and Reasoning, EPiC Series in Computing,
vol. 57, 233–253.'
mla: Chatterjee, Krishnendu, et al. “Quasipolynomial Set-Based Symbolic Algorithms
for Parity Games.” 22nd International Conference on Logic for Programming,
Artificial Intelligence and Reasoning, vol. 57, EasyChair, 2018, pp. 233–53,
doi:10.29007/5z5k.
short: K. Chatterjee, W. Dvořák, M.H. Henzinger, A. Svozil, in:, 22nd International
Conference on Logic for Programming, Artificial Intelligence and Reasoning, EasyChair,
2018, pp. 233–253.
conference:
end_date: 2018-11-21
location: Awassa, Ethiopia
name: 'LPAR: Conference on Logic for Programming, Artificial Intelligence and Reasoning'
start_date: 2018-11-17
date_created: 2022-03-18T12:46:32Z
date_published: 2018-10-23T00:00:00Z
date_updated: 2022-07-29T09:24:31Z
day: '23'
ddc:
- '000'
department:
- _id: KrCh
doi: 10.29007/5z5k
ec_funded: 1
external_id:
arxiv:
- '1909.04983'
file:
- access_level: open_access
checksum: 1229aa8640bd6db610c85decf2265480
content_type: application/pdf
creator: dernst
date_created: 2022-05-17T07:51:08Z
date_updated: 2022-05-17T07:51:08Z
file_id: '11392'
file_name: 2018_EPiCs_Chatterjee.pdf
file_size: 720893
relation: main_file
success: 1
file_date_updated: 2022-05-17T07:51:08Z
has_accepted_license: '1'
intvolume: ' 57'
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
page: 233-253
project:
- _id: 25863FF4-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: S11407
name: Game Theory
- _id: 2581B60A-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '279307'
name: 'Quantitative Graph Games: Theory and Applications'
publication: 22nd International Conference on Logic for Programming, Artificial Intelligence
and Reasoning
publication_identifier:
issn:
- 2398-7340
publication_status: published
publisher: EasyChair
quality_controlled: '1'
scopus_import: '1'
status: public
title: Quasipolynomial set-based symbolic algorithms for parity games
type: conference
user_id: 72615eeb-f1f3-11ec-aa25-d4573ddc34fd
volume: 57
year: '2018'
...
---
_id: '1092'
abstract:
- lang: eng
text: 'A graphical model encodes conditional independence relations via the Markov
properties. For an undirected graph these conditional independence relations can
be represented by a simple polytope known as the graph associahedron, which can
be constructed as a Minkowski sum of standard simplices. We show that there is
an analogous polytope for conditional independence relations coming from a regular
Gaussian model, and it can be defined using multiinformation or relative entropy.
For directed acyclic graphical models we give a construction of this polytope
as a Minkowski sum of matroid polytopes. Finally, we apply this geometric insight
to construct a new ordering-based search algorithm for causal inference via directed
acyclic graphical models. '
author:
- first_name: Fatemeh
full_name: Mohammadi, Fatemeh
id: 2C29581E-F248-11E8-B48F-1D18A9856A87
last_name: Mohammadi
- first_name: Caroline
full_name: Uhler, Caroline
id: 49ADD78E-F248-11E8-B48F-1D18A9856A87
last_name: Uhler
orcid: 0000-0002-7008-0216
- first_name: Charles
full_name: Wang, Charles
last_name: Wang
- first_name: Josephine
full_name: Yu, Josephine
last_name: Yu
citation:
ama: Mohammadi F, Uhler C, Wang C, Yu J. Generalized permutohedra from probabilistic
graphical models. SIAM Journal on Discrete Mathematics. 2018;32(1):64-93.
doi:10.1137/16M107894X
apa: Mohammadi, F., Uhler, C., Wang, C., & Yu, J. (2018). Generalized permutohedra
from probabilistic graphical models. SIAM Journal on Discrete Mathematics.
SIAM. https://doi.org/10.1137/16M107894X
chicago: Mohammadi, Fatemeh, Caroline Uhler, Charles Wang, and Josephine Yu. “Generalized
Permutohedra from Probabilistic Graphical Models.” SIAM Journal on Discrete
Mathematics. SIAM, 2018. https://doi.org/10.1137/16M107894X.
ieee: F. Mohammadi, C. Uhler, C. Wang, and J. Yu, “Generalized permutohedra from
probabilistic graphical models,” SIAM Journal on Discrete Mathematics,
vol. 32, no. 1. SIAM, pp. 64–93, 2018.
ista: Mohammadi F, Uhler C, Wang C, Yu J. 2018. Generalized permutohedra from probabilistic
graphical models. SIAM Journal on Discrete Mathematics. 32(1), 64–93.
mla: Mohammadi, Fatemeh, et al. “Generalized Permutohedra from Probabilistic Graphical
Models.” SIAM Journal on Discrete Mathematics, vol. 32, no. 1, SIAM, 2018,
pp. 64–93, doi:10.1137/16M107894X.
short: F. Mohammadi, C. Uhler, C. Wang, J. Yu, SIAM Journal on Discrete Mathematics
32 (2018) 64–93.
date_created: 2018-12-11T11:50:06Z
date_published: 2018-01-01T00:00:00Z
date_updated: 2021-01-12T06:48:13Z
day: '01'
doi: 10.1137/16M107894X
extern: '1'
intvolume: ' 32'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1606.01814
month: '01'
oa: 1
oa_version: Preprint
page: 64-93
publication: SIAM Journal on Discrete Mathematics
publication_status: published
publisher: SIAM
publist_id: '6284'
quality_controlled: '1'
status: public
title: Generalized permutohedra from probabilistic graphical models
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 32
year: '2018'
...
---
_id: '11'
abstract:
- lang: eng
text: We report on a novel strategy to derive mean-field limits of quantum mechanical
systems in which a large number of particles weakly couple to a second-quantized
radiation field. The technique combines the method of counting and the coherent
state approach to study the growth of the correlations among the particles and
in the radiation field. As an instructional example, we derive the Schrödinger–Klein–Gordon
system of equations from the Nelson model with ultraviolet cutoff and possibly
massless scalar field. In particular, we prove the convergence of the reduced
density matrices (of the nonrelativistic particles and the field bosons) associated
with the exact time evolution to the projectors onto the solutions of the Schrödinger–Klein–Gordon
equations in trace norm. Furthermore, we derive explicit bounds on the rate of
convergence of the one-particle reduced density matrix of the nonrelativistic
particles in Sobolev norm.
arxiv: 1
author:
- first_name: Nikolai K
full_name: Leopold, Nikolai K
id: 4BC40BEC-F248-11E8-B48F-1D18A9856A87
last_name: Leopold
orcid: 0000-0002-0495-6822
- first_name: Peter
full_name: Pickl, Peter
last_name: Pickl
citation:
ama: 'Leopold NK, Pickl P. Mean-field limits of particles in interaction with quantised
radiation fields. In: Vol 270. Springer; 2018:185-214. doi:10.1007/978-3-030-01602-9_9'
apa: 'Leopold, N. K., & Pickl, P. (2018). Mean-field limits of particles in
interaction with quantised radiation fields (Vol. 270, pp. 185–214). Presented
at the MaLiQS: Macroscopic Limits of Quantum Systems, Munich, Germany: Springer.
https://doi.org/10.1007/978-3-030-01602-9_9'
chicago: Leopold, Nikolai K, and Peter Pickl. “Mean-Field Limits of Particles in
Interaction with Quantised Radiation Fields,” 270:185–214. Springer, 2018. https://doi.org/10.1007/978-3-030-01602-9_9.
ieee: 'N. K. Leopold and P. Pickl, “Mean-field limits of particles in interaction
with quantised radiation fields,” presented at the MaLiQS: Macroscopic Limits
of Quantum Systems, Munich, Germany, 2018, vol. 270, pp. 185–214.'
ista: 'Leopold NK, Pickl P. 2018. Mean-field limits of particles in interaction
with quantised radiation fields. MaLiQS: Macroscopic Limits of Quantum Systems
vol. 270, 185–214.'
mla: Leopold, Nikolai K., and Peter Pickl. Mean-Field Limits of Particles in
Interaction with Quantised Radiation Fields. Vol. 270, Springer, 2018, pp.
185–214, doi:10.1007/978-3-030-01602-9_9.
short: N.K. Leopold, P. Pickl, in:, Springer, 2018, pp. 185–214.
conference:
end_date: 2017-04-01
location: Munich, Germany
name: 'MaLiQS: Macroscopic Limits of Quantum Systems'
start_date: 2017-03-30
date_created: 2018-12-11T11:44:08Z
date_published: 2018-10-27T00:00:00Z
date_updated: 2021-01-12T06:48:16Z
day: '27'
department:
- _id: RoSe
doi: 10.1007/978-3-030-01602-9_9
ec_funded: 1
external_id:
arxiv:
- '1806.10843'
intvolume: ' 270'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1806.10843
month: '10'
oa: 1
oa_version: Preprint
page: 185 - 214
project:
- _id: 25C6DC12-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '694227'
name: Analysis of quantum many-body systems
publication_status: published
publisher: Springer
publist_id: '8045'
quality_controlled: '1'
scopus_import: 1
status: public
title: Mean-field limits of particles in interaction with quantised radiation fields
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 270
year: '2018'
...
---
_id: '11063'
abstract:
- lang: eng
text: The total number of nuclear pore complexes (NPCs) per nucleus varies greatly
between different cell types and is known to change during cell differentiation
and cell transformation. However, the underlying mechanisms that control how many
nuclear transport channels are assembled into a given nuclear envelope remain
unclear. Here, we report that depletion of the NPC basket protein Tpr, but not
Nup153, dramatically increases the total NPC number in various cell types. This
negative regulation of Tpr occurs via a phosphorylation cascade of extracellular
signal-regulated kinase (ERK), the central kinase of the mitogen-activated protein
kinase (MAPK) pathway. Tpr serves as a scaffold for ERK to phosphorylate the nucleoporin
(Nup) Nup153, which is critical for early stages of NPC biogenesis. Our results
reveal a critical role of the Nup Tpr in coordinating signal transduction pathways
during cell proliferation and the dynamic organization of the nucleus.
article_processing_charge: No
article_type: original
author:
- first_name: Asako
full_name: McCloskey, Asako
last_name: McCloskey
- first_name: Arkaitz
full_name: Ibarra, Arkaitz
last_name: Ibarra
- first_name: Martin W
full_name: HETZER, Martin W
id: 86c0d31b-b4eb-11ec-ac5a-eae7b2e135ed
last_name: HETZER
orcid: 0000-0002-2111-992X
citation:
ama: McCloskey A, Ibarra A, Hetzer M. Tpr regulates the total number of nuclear
pore complexes per cell nucleus. Genes & Development. 2018;32(19-20):1321-1331.
doi:10.1101/gad.315523.118
apa: McCloskey, A., Ibarra, A., & Hetzer, M. (2018). Tpr regulates the total
number of nuclear pore complexes per cell nucleus. Genes & Development.
Cold Spring Harbor Laboratory. https://doi.org/10.1101/gad.315523.118
chicago: McCloskey, Asako, Arkaitz Ibarra, and Martin Hetzer. “Tpr Regulates the
Total Number of Nuclear Pore Complexes per Cell Nucleus.” Genes & Development.
Cold Spring Harbor Laboratory, 2018. https://doi.org/10.1101/gad.315523.118.
ieee: A. McCloskey, A. Ibarra, and M. Hetzer, “Tpr regulates the total number of
nuclear pore complexes per cell nucleus,” Genes & Development, vol.
32, no. 19–20. Cold Spring Harbor Laboratory, pp. 1321–1331, 2018.
ista: McCloskey A, Ibarra A, Hetzer M. 2018. Tpr regulates the total number of nuclear
pore complexes per cell nucleus. Genes & Development. 32(19–20), 1321–1331.
mla: McCloskey, Asako, et al. “Tpr Regulates the Total Number of Nuclear Pore Complexes
per Cell Nucleus.” Genes & Development, vol. 32, no. 19–20, Cold Spring
Harbor Laboratory, 2018, pp. 1321–31, doi:10.1101/gad.315523.118.
short: A. McCloskey, A. Ibarra, M. Hetzer, Genes & Development 32 (2018) 1321–1331.
date_created: 2022-04-07T07:45:30Z
date_published: 2018-09-18T00:00:00Z
date_updated: 2022-07-18T08:32:32Z
day: '18'
doi: 10.1101/gad.315523.118
extern: '1'
external_id:
pmid:
- '30228202'
intvolume: ' 32'
issue: 19-20
keyword:
- Developmental Biology
- Genetics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1101/gad.315523.118
month: '09'
oa: 1
oa_version: Published Version
page: 1321-1331
pmid: 1
publication: Genes & Development
publication_identifier:
issn:
- 0890-9369
- 1549-5477
publication_status: published
publisher: Cold Spring Harbor Laboratory
quality_controlled: '1'
scopus_import: '1'
status: public
title: Tpr regulates the total number of nuclear pore complexes per cell nucleus
type: journal_article
user_id: 72615eeb-f1f3-11ec-aa25-d4573ddc34fd
volume: 32
year: '2018'
...
---
_id: '11064'
abstract:
- lang: eng
text: Biomarkers of aging can be used to assess the health of individuals and to
study aging and age-related diseases. We generate a large dataset of genome-wide
RNA-seq profiles of human dermal fibroblasts from 133 people aged 1 to 94 years
old to test whether signatures of aging are encoded within the transcriptome.
We develop an ensemble machine learning method that predicts age to a median error
of 4 years, outperforming previous methods used to predict age. The ensemble was
further validated by testing it on ten progeria patients, and our method is the
only one that predicts accelerated aging in these patients.
article_number: '221'
article_processing_charge: No
article_type: original
author:
- first_name: Jason G.
full_name: Fleischer, Jason G.
last_name: Fleischer
- first_name: Roberta
full_name: Schulte, Roberta
last_name: Schulte
- first_name: Hsiao H.
full_name: Tsai, Hsiao H.
last_name: Tsai
- first_name: Swati
full_name: Tyagi, Swati
last_name: Tyagi
- first_name: Arkaitz
full_name: Ibarra, Arkaitz
last_name: Ibarra
- first_name: Maxim N.
full_name: Shokhirev, Maxim N.
last_name: Shokhirev
- first_name: Ling
full_name: Huang, Ling
last_name: Huang
- first_name: Martin W
full_name: HETZER, Martin W
id: 86c0d31b-b4eb-11ec-ac5a-eae7b2e135ed
last_name: HETZER
orcid: 0000-0002-2111-992X
- first_name: Saket
full_name: Navlakha, Saket
last_name: Navlakha
citation:
ama: Fleischer JG, Schulte R, Tsai HH, et al. Predicting age from the transcriptome
of human dermal fibroblasts. Genome Biology. 2018;19. doi:10.1186/s13059-018-1599-6
apa: Fleischer, J. G., Schulte, R., Tsai, H. H., Tyagi, S., Ibarra, A., Shokhirev,
M. N., … Navlakha, S. (2018). Predicting age from the transcriptome of human dermal
fibroblasts. Genome Biology. BioMed Central. https://doi.org/10.1186/s13059-018-1599-6
chicago: Fleischer, Jason G., Roberta Schulte, Hsiao H. Tsai, Swati Tyagi, Arkaitz
Ibarra, Maxim N. Shokhirev, Ling Huang, Martin Hetzer, and Saket Navlakha. “Predicting
Age from the Transcriptome of Human Dermal Fibroblasts.” Genome Biology.
BioMed Central, 2018. https://doi.org/10.1186/s13059-018-1599-6.
ieee: J. G. Fleischer et al., “Predicting age from the transcriptome of human
dermal fibroblasts,” Genome Biology, vol. 19. BioMed Central, 2018.
ista: Fleischer JG, Schulte R, Tsai HH, Tyagi S, Ibarra A, Shokhirev MN, Huang L,
Hetzer M, Navlakha S. 2018. Predicting age from the transcriptome of human dermal
fibroblasts. Genome Biology. 19, 221.
mla: Fleischer, Jason G., et al. “Predicting Age from the Transcriptome of Human
Dermal Fibroblasts.” Genome Biology, vol. 19, 221, BioMed Central, 2018,
doi:10.1186/s13059-018-1599-6.
short: J.G. Fleischer, R. Schulte, H.H. Tsai, S. Tyagi, A. Ibarra, M.N. Shokhirev,
L. Huang, M. Hetzer, S. Navlakha, Genome Biology 19 (2018).
date_created: 2022-04-07T07:45:40Z
date_published: 2018-12-20T00:00:00Z
date_updated: 2022-07-18T08:32:34Z
day: '20'
doi: 10.1186/s13059-018-1599-6
extern: '1'
external_id:
pmid:
- '30567591'
intvolume: ' 19'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1186/s13059-018-1599-6
month: '12'
oa: 1
oa_version: Published Version
pmid: 1
publication: Genome Biology
publication_identifier:
issn:
- 1474-760X
publication_status: published
publisher: BioMed Central
quality_controlled: '1'
scopus_import: '1'
status: public
title: Predicting age from the transcriptome of human dermal fibroblasts
type: journal_article
user_id: 72615eeb-f1f3-11ec-aa25-d4573ddc34fd
volume: 19
year: '2018'
...
---
_id: '11508'
abstract:
- lang: eng
text: Distant luminous Lyman-α emitters (LAEs) are excellent targets for spectroscopic
observations of galaxies in the epoch of reionisation (EoR). We present deep high-resolution
(R = 5000) VLT/X-shooter observations, along with an extensive collection of photometric
data of COLA1, a proposed double peaked LAE at z = 6.6. We rule out the possibility
that COLA1’s emission line is an [OII] doublet at z = 1.475 on the basis of i)
the asymmetric red line-profile and flux ratio of the peaks (blue/red=0.31 ± 0.03)
and ii) an unphysical [OII]/Hα ratio ([OII]/Hα > 22). We show that COLA1’s observed
B-band flux is explained by a faint extended foreground LAE, for which we detect
Lyα and [OIII] at z = 2.142. We thus conclude that COLA1 is a real double-peaked
LAE at z = 6.593, the first discovered at z > 6. COLA1 is UV luminous (M1500 = −21.6 ± 0.3),
has a high equivalent width (EW0,Lyα = 120−40+50 Å) and very compact Lyα emission
(r50,Lyα = 0.33−0.04+0.07 kpc). Relatively weak inferred Hβ+[OIII] line-emission
from Spitzer/IRAC indicates an extremely low metallicity of Z < 1/20 Z⊙ or reduced
strength of nebular lines due to high escape of ionising photons. The small Lyα
peak separation of 220 ± 20 km s−1 implies a low HI column density and an ionising
photon escape fraction of ≈15 − 30%, providing the first direct evidence that
such galaxies contribute actively to the reionisation of the Universe at z > 6.
Based on simple estimates, we find that COLA1 could have provided just enough
photons to reionise its own ≈0.3 pMpc (2.3 cMpc) bubble, allowing the blue Lyα
line to be observed. However, we also discuss alternative scenarios explaining
the detected double peaked nature of COLA1. Our results show that future high-resolution
observations of statistical samples of double peaked LAEs at z > 5 are a promising
probe of the occurrence of ionised regions around galaxies in the EoR.
acknowledgement: JM acknowledges the award of a Huygens PhD fellowship from Leiden
University. MG acknowledges support from NASA grant NNX17AK58G. APA, PhD::SPACE
fellow, acknowledges support from the FCT through the fellowship PD/BD/52706/2014.
Based on observations made with ESO Telescopes at the La Silla Paranal Observatory
under programme IDs 294.A-5018, 098.A-0819, 099.A-0254 and 0100.A-0213. We are grateful
for the excellent data-sets from the COSMOS and UltraVISTA survey teams. This research
was supported by the Munich Institute for Astro- and Particle Physics (MIAPP) of
the DFG cluster of excellence “Origin and Structure of the Universe”. We thank the
referee for their comments that improved the paper. We also thank Christoph Behrens,
Len Cowie, Koki Kakiichi, Peter Laursen, Charlotte Mason, Eros Vanzella, Lewis Weinberger
and Johannes Zabl for discussions. We have benefited from the public available programming
language Python, including the numpy, matplotlib, scipy and astropy packages (Hunter
2007; Astropy Collaboration 2013), the astronomical imaging tools Swarp (Bertin
2010) and ds9 and the Topcat analysis tool (Taylor 2013).
article_number: A136
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Jorryt J
full_name: Matthee, Jorryt J
id: 7439a258-f3c0-11ec-9501-9df22fe06720
last_name: Matthee
orcid: 0000-0003-2871-127X
- first_name: David
full_name: Sobral, David
last_name: Sobral
- first_name: Max
full_name: Gronke, Max
last_name: Gronke
- first_name: Ana
full_name: Paulino-Afonso, Ana
last_name: Paulino-Afonso
- first_name: Mauro
full_name: Stefanon, Mauro
last_name: Stefanon
- first_name: Huub
full_name: Röttgering, Huub
last_name: Röttgering
citation:
ama: 'Matthee JJ, Sobral D, Gronke M, Paulino-Afonso A, Stefanon M, Röttgering H.
Confirmation of double peaked Lyα emission at z = 6.593: Witnessing a galaxy directly
contributing to the reionisation of the universe. Astronomy & Astrophysics.
2018;619. doi:10.1051/0004-6361/201833528'
apa: 'Matthee, J. J., Sobral, D., Gronke, M., Paulino-Afonso, A., Stefanon, M.,
& Röttgering, H. (2018). Confirmation of double peaked Lyα emission at z =
6.593: Witnessing a galaxy directly contributing to the reionisation of the universe.
Astronomy & Astrophysics. EDP Sciences. https://doi.org/10.1051/0004-6361/201833528'
chicago: 'Matthee, Jorryt J, David Sobral, Max Gronke, Ana Paulino-Afonso, Mauro
Stefanon, and Huub Röttgering. “Confirmation of Double Peaked Lyα Emission at
z = 6.593: Witnessing a Galaxy Directly Contributing to the Reionisation of the
Universe.” Astronomy & Astrophysics. EDP Sciences, 2018. https://doi.org/10.1051/0004-6361/201833528.'
ieee: 'J. J. Matthee, D. Sobral, M. Gronke, A. Paulino-Afonso, M. Stefanon, and
H. Röttgering, “Confirmation of double peaked Lyα emission at z = 6.593: Witnessing
a galaxy directly contributing to the reionisation of the universe,” Astronomy
& Astrophysics, vol. 619. EDP Sciences, 2018.'
ista: 'Matthee JJ, Sobral D, Gronke M, Paulino-Afonso A, Stefanon M, Röttgering
H. 2018. Confirmation of double peaked Lyα emission at z = 6.593: Witnessing a
galaxy directly contributing to the reionisation of the universe. Astronomy &
Astrophysics. 619, A136.'
mla: 'Matthee, Jorryt J., et al. “Confirmation of Double Peaked Lyα Emission at
z = 6.593: Witnessing a Galaxy Directly Contributing to the Reionisation of the
Universe.” Astronomy & Astrophysics, vol. 619, A136, EDP Sciences,
2018, doi:10.1051/0004-6361/201833528.'
short: J.J. Matthee, D. Sobral, M. Gronke, A. Paulino-Afonso, M. Stefanon, H. Röttgering,
Astronomy & Astrophysics 619 (2018).
date_created: 2022-07-06T11:14:23Z
date_published: 2018-11-19T00:00:00Z
date_updated: 2022-07-19T09:32:08Z
day: '19'
doi: 10.1051/0004-6361/201833528
extern: '1'
external_id:
arxiv:
- '1805.11621'
intvolume: ' 619'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
- 'galaxies: high-redshift / galaxies: formation / dark ages / reionization / first
stars / techniques: spectroscopic / intergalactic medium'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1805.11621
month: '11'
oa: 1
oa_version: Published Version
publication: Astronomy & Astrophysics
publication_identifier:
eissn:
- 1432-0746
issn:
- 0004-6361
publication_status: published
publisher: EDP Sciences
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Confirmation of double peaked Lyα emission at z = 6.593: Witnessing a galaxy
directly contributing to the reionisation of the universe'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 619
year: '2018'
...
---
_id: '11549'
abstract:
- lang: eng
text: We investigate the clustering properties of ∼7000 H β + [O III] and [O II]
narrowband-selected emitters at z ∼ 0.8–4.7 from the High-z Emission Line Survey.
We find clustering lengths, r0, of 1.5–4.0 h−1 Mpc and minimum dark matter halo
masses of 1010.7–12.1 M⊙ for our z = 0.8–3.2 H β + [O III] emitters and r0 ∼ 2.0–8.3
h−1 Mpc and halo masses of 1011.5–12.6 M⊙ for our z = 1.5–4.7 [O II] emitters.
We find r0 to strongly increase both with increasing line luminosity and redshift.
By taking into account the evolution of the characteristic line luminosity, L⋆(z),
and using our model predictions of halo mass given r0, we find a strong, redshift-independent
increasing trend between L/L⋆(z) and minimum halo mass. The faintest H β + [O III]
emitters are found to reside in 109.5 M⊙ haloes and the brightest emitters in
1013.0 M⊙ haloes. For [O II] emitters, the faintest emitters are found in 1010.5
M⊙ haloes and the brightest emitters in 1012.6 M⊙ haloes. A redshift-independent
stellar mass dependency is also observed where the halo mass increases from 1011
to 1012.5 M⊙ for stellar masses of 108.5 to 1011.5 M⊙, respectively. We investigate
the interdependencies of these trends by repeating our analysis in a Lline−Mstar
grid space for our most populated samples (H β + [O III] z = 0.84 and [O II] z
= 1.47) and find that the line luminosity dependency is stronger than the stellar
mass dependency on halo mass. For L > L⋆ emitters at all epochs, we find a relatively
flat trend with halo masses of 1012.5–13 M⊙, which may be due to quenching mechanisms
in massive haloes that is consistent with a transitional halo mass predicted by
models.
acknowledgement: We thank the anonymous referee for their useful comments and suggestions
that improved this study. AAK thanks Anahita Alavi and Irene Shivaei for useful
discussion in the making of this paper. AAK acknowledges that this work was supported
by NASA Headquarters under the NASA Earth and Space Science Fellowship Program –
Grant NNX16AO92H. DS acknowledges financial support from the Netherlands Organization
for Scientific Research (NWO) through a Veni fellowship and from Lancaster University
through an Early Career Internal Grant A100679. PNB is grateful for support from
STFC via grant STM001229/1. IRS acknowledges support from STFC (ST/L00075X/1), the
ERC Advanced Grant DUSTYGAL (321334), and a Royal Society/Wolfson Merit award. JM
acknowledges the support of a Huygens PhD fellowship from Leiden University. BD
acknowledges financial support from NASA through the Astrophysics Data Analysis
Program (ADAP), grant number NNX12AE20G.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: A A
full_name: Khostovan, A A
last_name: Khostovan
- first_name: D
full_name: Sobral, D
last_name: Sobral
- first_name: B
full_name: Mobasher, B
last_name: Mobasher
- first_name: P N
full_name: Best, P N
last_name: Best
- first_name: I
full_name: Smail, I
last_name: Smail
- first_name: Jorryt J
full_name: Matthee, Jorryt J
id: 7439a258-f3c0-11ec-9501-9df22fe06720
last_name: Matthee
orcid: 0000-0003-2871-127X
- first_name: B
full_name: Darvish, B
last_name: Darvish
- first_name: H
full_name: Nayyeri, H
last_name: Nayyeri
- first_name: S
full_name: Hemmati, S
last_name: Hemmati
- first_name: J P
full_name: Stott, J P
last_name: Stott
citation:
ama: 'Khostovan AA, Sobral D, Mobasher B, et al. The clustering of H β + [O III]
and [O II] emitters since z ∼ 5: Dependencies with line luminosity and stellar
mass. Monthly Notices of the Royal Astronomical Society. 2018;478(3):2999-3015.
doi:10.1093/mnras/sty925'
apa: 'Khostovan, A. A., Sobral, D., Mobasher, B., Best, P. N., Smail, I., Matthee,
J. J., … Stott, J. P. (2018). The clustering of H β + [O III] and [O II] emitters
since z ∼ 5: Dependencies with line luminosity and stellar mass. Monthly Notices
of the Royal Astronomical Society. Oxford University Press. https://doi.org/10.1093/mnras/sty925'
chicago: 'Khostovan, A A, D Sobral, B Mobasher, P N Best, I Smail, Jorryt J Matthee,
B Darvish, H Nayyeri, S Hemmati, and J P Stott. “The Clustering of H β + [O III]
and [O II] Emitters since z ∼ 5: Dependencies with Line Luminosity and Stellar
Mass.” Monthly Notices of the Royal Astronomical Society. Oxford University
Press, 2018. https://doi.org/10.1093/mnras/sty925.'
ieee: 'A. A. Khostovan et al., “The clustering of H β + [O III] and [O II]
emitters since z ∼ 5: Dependencies with line luminosity and stellar mass,” Monthly
Notices of the Royal Astronomical Society, vol. 478, no. 3. Oxford University
Press, pp. 2999–3015, 2018.'
ista: 'Khostovan AA, Sobral D, Mobasher B, Best PN, Smail I, Matthee JJ, Darvish
B, Nayyeri H, Hemmati S, Stott JP. 2018. The clustering of H β + [O III] and [O II]
emitters since z ∼ 5: Dependencies with line luminosity and stellar mass. Monthly
Notices of the Royal Astronomical Society. 478(3), 2999–3015.'
mla: 'Khostovan, A. A., et al. “The Clustering of H β + [O III] and [O II] Emitters
since z ∼ 5: Dependencies with Line Luminosity and Stellar Mass.” Monthly Notices
of the Royal Astronomical Society, vol. 478, no. 3, Oxford University Press,
2018, pp. 2999–3015, doi:10.1093/mnras/sty925.'
short: A.A. Khostovan, D. Sobral, B. Mobasher, P.N. Best, I. Smail, J.J. Matthee,
B. Darvish, H. Nayyeri, S. Hemmati, J.P. Stott, Monthly Notices of the Royal Astronomical
Society 478 (2018) 2999–3015.
date_created: 2022-07-08T11:48:48Z
date_published: 2018-08-01T00:00:00Z
date_updated: 2022-08-19T06:53:39Z
day: '01'
doi: 10.1093/mnras/sty925
extern: '1'
external_id:
arxiv:
- '1705.01101'
intvolume: ' 478'
issue: '3'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
- 'galaxies: evolution'
- 'galaxies: haloes'
- 'galaxies: high-redshift'
- 'galaxies: star formation'
- 'cosmology: observations'
- large-scale structure of Universe
language:
- iso: eng
main_file_link:
- url: https://arxiv.org/abs/1705.01101
month: '08'
oa_version: Published Version
page: 2999-3015
publication: Monthly Notices of the Royal Astronomical Society
publication_identifier:
eissn:
- 1365-2966
issn:
- 0035-8711
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'The clustering of H β + [O III] and [O II] emitters since z ∼ 5: Dependencies
with line luminosity and stellar mass'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 478
year: '2018'
...
---
_id: '11555'
abstract:
- lang: eng
text: We investigate the morphology of the [C II] emission in a sample of ‘normal’
star-forming galaxies at 5 < z < 7.2 in relation to their UV (rest-frame) counterpart.
We use new Atacama Large Millimetre/submillimetre Array (ALMA) observations of
galaxies at z ∼ 6–7, as well as a careful re-analysis of archival ALMA data. In
total 29 galaxies were analysed, 21 of which are detected in [C II]. For several
of the latter the [C II] emission breaks into multiple components. Only a fraction
of these [C II] components, if any, is associated with the primary UV systems,
while the bulk of the [C II] emission is associated either with fainter UV components,
or not associated with any UV counterpart at the current limits. By taking into
account the presence of all these components, we find that the L[CII]–SFR (star
formation rate) relation at early epochs is fully consistent with the local relation,
but it has a dispersion of 0.48 ± 0.07 dex, which is about two times larger than
observed locally. We also find that the deviation from the local L[CII]–SFR relation
has a weak anticorrelation with the EW(Ly α). The morphological analysis also
reveals that [C II] emission is generally much more extended than the UV emission.
As a consequence, these primordial galaxies are characterized by a [C II] surface
brightness generally much lower than expected from the local Σ[CII]−ΣSFR relation.
These properties are likely a consequence of a combination of different effects,
namely gas metallicity, [C II] emission from obscured star-forming regions, strong
variations of the ionization parameter, and circumgalactic gas in accretion or
ejected by these primeval galaxies.
acknowledgement: "This paper makes use of the following ALMA data:\r\nADS/JAO.ALMA#2012.1.00719.S,
ADS/JAO.ALMA#2012.A.00040.S,\r\nADS/JAO.ALMA#2013.A.00433.S, ADS/JAO.ALMA#2011.0.00115.S,\r\nADS/JAO.ALMA#2012.1.00033.S,
ADS/JAO.ALMA#2012.1.00523.S,\r\nADS/JAO.ALMA#2013.1.00815.S, ADS/JAO.ALMA#2015.1.00834.S.,\r\nADS/JAO.ALMA#2015.1.01105.S,
AND ADS/JAO.ALMA#2016.1.01240.S\r\nwhich can be retrieved from the ALMA data archive:\r\nhttps://almascience.eso.org/
alma-data/archive. ALMA is a partnership of ESO (representing its member states),
NSF (USA) and NINS (Japan), together with NRC (Canada) and NSC and ASIAA (Taiwan),
in cooperation with the Republic of Chile. The Joint ALMA Observatory is operated
by ESO, AUI/NRAO, and NAOJ. We are grateful to G. Jones to for providing his [C
II] flux maps. RM and SC acknowledge support by the Science and Technology Facilities
Council (STFC). RM acknowledges ERC Advanced Grant 695671 ‘QUENCH’. AF acknowledges
support from the ERC Advanced Grant INTERSTELLAR H2020/740120."
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: S
full_name: Carniani, S
last_name: Carniani
- first_name: R
full_name: Maiolino, R
last_name: Maiolino
- first_name: R
full_name: Amorin, R
last_name: Amorin
- first_name: L
full_name: Pentericci, L
last_name: Pentericci
- first_name: A
full_name: Pallottini, A
last_name: Pallottini
- first_name: A
full_name: Ferrara, A
last_name: Ferrara
- first_name: C J
full_name: Willott, C J
last_name: Willott
- first_name: R
full_name: Smit, R
last_name: Smit
- first_name: Jorryt J
full_name: Matthee, Jorryt J
id: 7439a258-f3c0-11ec-9501-9df22fe06720
last_name: Matthee
orcid: 0000-0003-2871-127X
- first_name: D
full_name: Sobral, D
last_name: Sobral
- first_name: P
full_name: Santini, P
last_name: Santini
- first_name: M
full_name: Castellano, M
last_name: Castellano
- first_name: S
full_name: De Barros, S
last_name: De Barros
- first_name: A
full_name: Fontana, A
last_name: Fontana
- first_name: A
full_name: Grazian, A
last_name: Grazian
- first_name: L
full_name: Guaita, L
last_name: Guaita
citation:
ama: Carniani S, Maiolino R, Amorin R, et al. Kiloparsec-scale gaseous clumps and
star formation at z = 5–7. Monthly Notices of the Royal Astronomical Society.
2018;478(1):1170-1184. doi:10.1093/mnras/sty1088
apa: Carniani, S., Maiolino, R., Amorin, R., Pentericci, L., Pallottini, A., Ferrara,
A., … Guaita, L. (2018). Kiloparsec-scale gaseous clumps and star formation at
z = 5–7. Monthly Notices of the Royal Astronomical Society. Oxford University
Press. https://doi.org/10.1093/mnras/sty1088
chicago: Carniani, S, R Maiolino, R Amorin, L Pentericci, A Pallottini, A Ferrara,
C J Willott, et al. “Kiloparsec-Scale Gaseous Clumps and Star Formation at z = 5–7.”
Monthly Notices of the Royal Astronomical Society. Oxford University Press,
2018. https://doi.org/10.1093/mnras/sty1088.
ieee: S. Carniani et al., “Kiloparsec-scale gaseous clumps and star formation
at z = 5–7,” Monthly Notices of the Royal Astronomical Society, vol. 478,
no. 1. Oxford University Press, pp. 1170–1184, 2018.
ista: Carniani S, Maiolino R, Amorin R, Pentericci L, Pallottini A, Ferrara A, Willott
CJ, Smit R, Matthee JJ, Sobral D, Santini P, Castellano M, De Barros S, Fontana
A, Grazian A, Guaita L. 2018. Kiloparsec-scale gaseous clumps and star formation
at z = 5–7. Monthly Notices of the Royal Astronomical Society. 478(1), 1170–1184.
mla: Carniani, S., et al. “Kiloparsec-Scale Gaseous Clumps and Star Formation at
z = 5–7.” Monthly Notices of the Royal Astronomical Society, vol. 478,
no. 1, Oxford University Press, 2018, pp. 1170–84, doi:10.1093/mnras/sty1088.
short: S. Carniani, R. Maiolino, R. Amorin, L. Pentericci, A. Pallottini, A. Ferrara,
C.J. Willott, R. Smit, J.J. Matthee, D. Sobral, P. Santini, M. Castellano, S.
De Barros, A. Fontana, A. Grazian, L. Guaita, Monthly Notices of the Royal Astronomical
Society 478 (2018) 1170–1184.
date_created: 2022-07-11T08:05:42Z
date_published: 2018-07-01T00:00:00Z
date_updated: 2022-08-19T06:58:06Z
day: '01'
doi: 10.1093/mnras/sty1088
extern: '1'
external_id:
arxiv:
- '1712.03985'
intvolume: ' 478'
issue: '1'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
- 'galaxies: evolution'
- 'galaxies: high-redshift'
- 'galaxies: ISM'
- 'galaxies: formation'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1712.03985
month: '07'
oa: 1
oa_version: Preprint
page: 1170-1184
publication: Monthly Notices of the Royal Astronomical Society
publication_identifier:
eissn:
- 1365-2966
issn:
- 0035-8711
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: Kiloparsec-scale gaseous clumps and star formation at z = 5–7
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 478
year: '2018'
...
---
_id: '11557'
abstract:
- lang: eng
text: Deep narrow-band surveys have revealed a large population of faint Ly α emitters
(LAEs) in the distant Universe, but relatively little is known about the most
luminous sources (LLyα≳1042.7 erg s−1; LLyα≳L∗Lyα). Here we present the spectroscopic
follow-up of 21 luminous LAEs at z ∼ 2–3 found with panoramic narrow-band surveys
over five independent extragalactic fields (≈4 × 106 Mpc3 surveyed at z ∼ 2.2
and z ∼ 3.1). We use WHT/ISIS, Keck/DEIMOS, and VLT/X-SHOOTER to study these sources
using high ionization UV lines. Luminous LAEs at z ∼ 2–3 have blue UV slopes (β=−2.0+0.3−0.1)
and high Ly α escape fractions (50+20−15 per cent) and span five orders of magnitude
in UV luminosity (MUV ≈ −19 to −24). Many (70 per cent) show at least one high
ionization rest-frame UV line such as C IV, N V, C III], He II or O III], typically
blue-shifted by ≈100–200 km s−1 relative to Ly α. Their Ly α profiles reveal a
wide variety of shapes, including significant blue-shifted components and widths
from 200 to 4000 km s−1. Overall, 60 ± 11 per cent appear to be active galactic
nucleus (AGN) dominated, and at LLyα > 1043.3 erg s−1 and/or MUV < −21.5 virtually
all LAEs are AGNs with high ionization parameters (log U = 0.6 ± 0.5) and with
metallicities of ≈0.5 − 1 Z⊙. Those lacking signatures of AGNs (40 ± 11 per cent)
have lower ionization parameters (logU=−3.0+1.6−0.9 and log ξion = 25.4 ± 0.2)
and are apparently metal-poor sources likely powered by young, dust-poor ‘maximal’
starbursts. Our results show that luminous LAEs at z ∼ 2–3 are a diverse population
and that 2×L∗Lyα and 2×M∗UV mark a sharp transition in the nature of LAEs, from
star formation dominated to AGN dominated.
acknowledgement: 'We thank the anonymous reviewer for their timely and constructive
comments that greatly helped us to improve the manuscript. DS acknowledges financial
support from the Netherlands Organization for Scientific research (NWO) through
a Veni fellowship and from Lancaster University through an Early Career Internal
Grant A100679. JM acknowledges the support of a Huygens PhD fellowship from Leiden
University. BD acknowledges financial support from NASA through the Astrophysics
Data Analysis Program (ADAP), grant number NNX12AE20G, and the National Science
Foundation, grant number 1716907. IRS acknowledges support from the ERC Advanced
Grant DUSTYGAL (321334), STFC (ST/P000541/1), and a Royal Society/Wolfson Merit
Award. PNB is grateful for support from STFC via grant ST/M001229/1. We thank Anne
Verhamme, Kimihiko Nakajima, Ryan Trainor, Sangeeta Malhotra, Max Gronke, James
Rhoads, Fang Xia An, Matthew Hayes, Takashi Kojima, Mark Dijkstra, and Anne Jaskot
for many helpful and engaging discussions, particularly during the SnowCLAW Ly α
workshop. We thank Bruno Ribeiro, Stephane Charlot, and Joseph Caruana for comments
on the manuscript. The authors would also like to thank Ingrid Tengs, Meg Singleton,
Ali Khostovan, and Sara Perez for participating in part of the observations. We
also thank Joao Calhau, Leah Morabito, Sergio Santos, and Aayush Saxena for their
assistance with the narrow-band observations which allowed to select some of the
sour ces. Based on observations obtained with the William Herschel Telescope, program:
W16AN004; the Very Large Telescope, programs: 098.A-0819 & 099.A-0254; and the Keck
II telescope, program: C267D. Based on data products from observations made with
ESO Telescopes at the La Silla Paranal Observatory under ESO programme IDs 294.A-5018,
294.A-5039, 092.A-0786, 093.A-0561, 097.A-0943, 098.A-0819, 099.A-0254 and 179.A-2005.
The authors acknowledge the award of service time (SW2014b20) on the WHT. WHT and
its service programme are operated on the island of La Palma by the Isaac Newton
Group in the Spanish Observatorio del Roque de los Muchachos of the Instituto de
Astrofisica de Canarias. The authors would also like to thank all the extremely
helpful observatory staff that have greatly contributed towards our observations,
particularly Fiona Riddick, Lilian Dominguez, Florencia Jimenez, and Ian Skillen.
We have benefited greatly from the publicly available programming language PYTHON,
including the NUMPY & SCIPY (Van Der Walt, Colbert & Varoquaux 2011; Jones et al.
2001), MATPLOTLIB (Hunter 2007), ASTROPY (Astropy Collaboration et al. 2013), and
the TOPCAT analysis program (Taylor 2013). This research has made use of the VizieR
catalogue access tool, CDS, Strasbourg, France.'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: David
full_name: Sobral, David
last_name: Sobral
- first_name: Jorryt J
full_name: Matthee, Jorryt J
id: 7439a258-f3c0-11ec-9501-9df22fe06720
last_name: Matthee
orcid: 0000-0003-2871-127X
- first_name: Behnam
full_name: Darvish, Behnam
last_name: Darvish
- first_name: Ian
full_name: Smail, Ian
last_name: Smail
- first_name: Philip N
full_name: Best, Philip N
last_name: Best
- first_name: Lara
full_name: Alegre, Lara
last_name: Alegre
- first_name: Huub
full_name: Röttgering, Huub
last_name: Röttgering
- first_name: Bahram
full_name: Mobasher, Bahram
last_name: Mobasher
- first_name: Ana
full_name: Paulino-Afonso, Ana
last_name: Paulino-Afonso
- first_name: Andra
full_name: Stroe, Andra
last_name: Stroe
- first_name: Iván
full_name: Oteo, Iván
last_name: Oteo
citation:
ama: 'Sobral D, Matthee JJ, Darvish B, et al. The nature of luminous Ly α emitters
at z ∼ 2–3: Maximal dust-poor starbursts and highly ionizing AGN. Monthly Notices
of the Royal Astronomical Society. 2018;477(2):2817-2840. doi:10.1093/mnras/sty782'
apa: 'Sobral, D., Matthee, J. J., Darvish, B., Smail, I., Best, P. N., Alegre, L.,
… Oteo, I. (2018). The nature of luminous Ly α emitters at z ∼ 2–3: Maximal dust-poor
starbursts and highly ionizing AGN. Monthly Notices of the Royal Astronomical
Society. Oxford University Press. https://doi.org/10.1093/mnras/sty782'
chicago: 'Sobral, David, Jorryt J Matthee, Behnam Darvish, Ian Smail, Philip N Best,
Lara Alegre, Huub Röttgering, et al. “The Nature of Luminous Ly α Emitters at
z ∼ 2–3: Maximal Dust-Poor Starbursts and Highly Ionizing AGN.” Monthly Notices
of the Royal Astronomical Society. Oxford University Press, 2018. https://doi.org/10.1093/mnras/sty782.'
ieee: 'D. Sobral et al., “The nature of luminous Ly α emitters at z ∼ 2–3:
Maximal dust-poor starbursts and highly ionizing AGN,” Monthly Notices of the
Royal Astronomical Society, vol. 477, no. 2. Oxford University Press, pp.
2817–2840, 2018.'
ista: 'Sobral D, Matthee JJ, Darvish B, Smail I, Best PN, Alegre L, Röttgering H,
Mobasher B, Paulino-Afonso A, Stroe A, Oteo I. 2018. The nature of luminous Ly
α emitters at z ∼ 2–3: Maximal dust-poor starbursts and highly ionizing AGN. Monthly
Notices of the Royal Astronomical Society. 477(2), 2817–2840.'
mla: 'Sobral, David, et al. “The Nature of Luminous Ly α Emitters at z ∼ 2–3: Maximal
Dust-Poor Starbursts and Highly Ionizing AGN.” Monthly Notices of the Royal
Astronomical Society, vol. 477, no. 2, Oxford University Press, 2018, pp.
2817–40, doi:10.1093/mnras/sty782.'
short: D. Sobral, J.J. Matthee, B. Darvish, I. Smail, P.N. Best, L. Alegre, H. Röttgering,
B. Mobasher, A. Paulino-Afonso, A. Stroe, I. Oteo, Monthly Notices of the Royal
Astronomical Society 477 (2018) 2817–2840.
date_created: 2022-07-12T07:18:02Z
date_published: 2018-06-01T00:00:00Z
date_updated: 2022-08-19T07:01:08Z
day: '01'
doi: 10.1093/mnras/sty782
extern: '1'
external_id:
arxiv:
- '1802.10102'
intvolume: ' 477'
issue: '2'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
- 'galaxies: active'
- 'galaxies: evolution'
- 'galaxies: high-redshift'
- 'galaxies: ISM'
- 'galaxies: starburst'
- 'cosmology: observations'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1802.10102
month: '06'
oa: 1
oa_version: Preprint
page: 2817-2840
publication: Monthly Notices of the Royal Astronomical Society
publication_identifier:
eissn:
- 1365-2966
issn:
- 0035-8711
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'The nature of luminous Ly α emitters at z ∼ 2–3: Maximal dust-poor starbursts
and highly ionizing AGN'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 477
year: '2018'
...
---
_id: '11558'
abstract:
- lang: eng
text: We present and explore deep narrow- and medium-band data obtained with the
Subaru and the Isaac Newton Telescopes in the ∼2 deg2 COSMOS field. We use these
data as an extremely wide, low-resolution (R ∼ 20–80) Integral Field Unit survey
to slice through the COSMOS field and obtain a large sample of ∼4000 Ly α emitters
(LAEs) from z ∼ 2 to 6 in 16 redshift slices (SC4K). We present new Ly α luminosity
functions (LFs) covering a comoving volume of ∼108 Mpc3. SC4K extensively complements
ultradeep surveys, jointly covering over 4 dex in Ly α luminosity and revealing
a global (2.5 < z < 6) synergy LF with α=−1.93+0.12−0.12, log10Φ∗Lyα=−3.45+0.22−0.29 Mpc−3,
and log10L∗Lyα=42.93+0.15−0.11 erg s−1. The Schechter component of the Ly α LF
reveals a factor ∼5 rise in L∗Lyα and a ∼7 × decline in Φ∗Lyα from z ∼ 2 to 6.
The data reveal an extra power-law (or Schechter) component above LLy α ≈ 1043.3 erg s−1
at z ∼ 2.2–3.5 and we show that it is partially driven by X-ray and radio active
galactic nucleus (AGN), as their Ly α LF resembles the excess. The power-law component
vanishes and/or is below our detection limits above z > 3.5, likely linked with
the evolution of the AGN population. The Ly α luminosity density rises by a factor
∼2 from z ∼ 2 to 3 but is then found to be roughly constant (1.1+0.2−0.2×1040 erg s−1 Mpc−3)
to z ∼ 6, despite the ∼0.7 dex drop in ultraviolet (UV) luminosity density. The
Ly α/UV luminosity density ratio rises from 4 ± 1 per cent to 30 ± 6 per cent
from z ∼ 2.2 to 6. Our results imply a rise of a factor of ≈2 in the global ionization
efficiency (ξion) and a factor ≈4 ± 1 in the Ly α escape fraction from z ∼ 2 to
6, hinting for evolution in both the typical burstiness/stellar populations and
even more so in the typical interstellar medium conditions allowing Ly α photons
to escape.
acknowledgement: "We thank the anonymous referee for their constructive comments that
helped us improve the manuscript. DS acknowledges the hospitality of the IAC and
a Severo Ochoa visiting grant. SS and JC acknowledge studentships from the Lancaster
University. JM acknowledges a Huygens PhD fellowship from Leiden University. APA
acknowledges financial support from the Science and Technology Foundation (FCT,
Portugal) through research grants UID/FIS/04434/2013 and fellowship PD/BD/52706/2014.
The authors thank Alyssa Drake, Kimihiko Nakajima, Yuichi Harikane, Max Gronke,
Irene Shivaei, Helmut Dannerbauer, Huub Rottgering, ¨ Marius Eide, and Masami Ouchi
for many engaging and stimulating discussions. We also thank Sara Perez, Alex Bennett,
and Tom Rose for their involvement in the early stages of this project. Based on
data products from observations made with European Southern Observatory (ESO) Telescopes
at the La Silla Paranal Observatory under ESO programme IDs 294.A-5018, 097.A 0943,\r\n098.A-0819,
099.A-0254, and 179.A-2005 and on data products produced by TERAPIX and the Cambridge
Astronomy Survey Unit on behalf of the UltraVISTA consortium. Based on observations
using the WFC on the 2.5 m INT, as part of programmes 2013AN002, 2013BN008, 2014AC88,
2014AN002, 2014BN006, 2014BC118, and 2016AN001. The INT is operated on the island
of La Palma by the Isaac Newton Group in the Spanish Observatorio del Roque de los
Muchachos of the Instituto de Astrofisica de Canarias. This work is based in part
on data products produced at TERAPIX available at the Canadian Astronomy Data Centre
as part of the Canada–France– Hawaii Telescope Legacy Survey (CFHTLS), a collaborative
project of NRC and CNRS.\r\nWe are grateful to the CFHTLS, COSMOS-UltraVISTA, and
COSMOS survey teams. We are also unmeasurably thankful to the pioneering and continuous
work from previous Ly α surveys’ teams. Without these previous Ly α and the wider
reach legacy surveys, this research would have been impossible. We also thank the
VUDS team for making available spectroscopic redshifts from data obtained with VIMOS
at the European Southern Observatory Very Large Telescope, Paranal, Chile, under
Large Programme 185.A-0791. Finally, the authors acknowledge the unique value of
the publicly available programming language PYTHON, including the NUMPY and SCIPY
(Van Der Walt, Colbert & Varoquaux 2011; Jones et al. 2001), MATPLOTLIB (Hunter
2007), ASTROPY (Astropy Collaboration et al. 2013), and the TOPCAT analysis program
(Taylor 2005). We publicly release a catalogue with all LAEs used in this paper
(SC4K), so it can be freely explored by the community (see five example entries
in Table A1)."
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: David
full_name: Sobral, David
last_name: Sobral
- first_name: Sérgio
full_name: Santos, Sérgio
last_name: Santos
- first_name: Jorryt J
full_name: Matthee, Jorryt J
id: 7439a258-f3c0-11ec-9501-9df22fe06720
last_name: Matthee
orcid: 0000-0003-2871-127X
- first_name: Ana
full_name: Paulino-Afonso, Ana
last_name: Paulino-Afonso
- first_name: Bruno
full_name: Ribeiro, Bruno
last_name: Ribeiro
- first_name: João
full_name: Calhau, João
last_name: Calhau
- first_name: Ali A
full_name: Khostovan, Ali A
last_name: Khostovan
citation:
ama: 'Sobral D, Santos S, Matthee JJ, et al. Slicing COSMOS with SC4K: The evolution
of typical Ly α emitters and the Ly α escape fraction from z ∼ 2 to 6. Monthly
Notices of the Royal Astronomical Society. 2018;476(4):4725-4752. doi:10.1093/mnras/sty378'
apa: 'Sobral, D., Santos, S., Matthee, J. J., Paulino-Afonso, A., Ribeiro, B., Calhau,
J., & Khostovan, A. A. (2018). Slicing COSMOS with SC4K: The evolution of
typical Ly α emitters and the Ly α escape fraction from z ∼ 2 to 6. Monthly
Notices of the Royal Astronomical Society. Oxford University Press. https://doi.org/10.1093/mnras/sty378'
chicago: 'Sobral, David, Sérgio Santos, Jorryt J Matthee, Ana Paulino-Afonso, Bruno
Ribeiro, João Calhau, and Ali A Khostovan. “Slicing COSMOS with SC4K: The Evolution
of Typical Ly α Emitters and the Ly α Escape Fraction from z ∼ 2 to 6.” Monthly
Notices of the Royal Astronomical Society. Oxford University Press, 2018.
https://doi.org/10.1093/mnras/sty378.'
ieee: 'D. Sobral et al., “Slicing COSMOS with SC4K: The evolution of typical
Ly α emitters and the Ly α escape fraction from z ∼ 2 to 6,” Monthly Notices
of the Royal Astronomical Society, vol. 476, no. 4. Oxford University Press,
pp. 4725–4752, 2018.'
ista: 'Sobral D, Santos S, Matthee JJ, Paulino-Afonso A, Ribeiro B, Calhau J, Khostovan
AA. 2018. Slicing COSMOS with SC4K: The evolution of typical Ly α emitters and
the Ly α escape fraction from z ∼ 2 to 6. Monthly Notices of the Royal Astronomical
Society. 476(4), 4725–4752.'
mla: 'Sobral, David, et al. “Slicing COSMOS with SC4K: The Evolution of Typical
Ly α Emitters and the Ly α Escape Fraction from z ∼ 2 to 6.” Monthly Notices
of the Royal Astronomical Society, vol. 476, no. 4, Oxford University Press,
2018, pp. 4725–52, doi:10.1093/mnras/sty378.'
short: D. Sobral, S. Santos, J.J. Matthee, A. Paulino-Afonso, B. Ribeiro, J. Calhau,
A.A. Khostovan, Monthly Notices of the Royal Astronomical Society 476 (2018) 4725–4752.
date_created: 2022-07-12T10:41:08Z
date_published: 2018-06-01T00:00:00Z
date_updated: 2022-08-19T07:04:45Z
day: '01'
doi: 10.1093/mnras/sty378
extern: '1'
external_id:
arxiv:
- '1712.04451'
intvolume: ' 476'
issue: '4'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
- 'galaxies: evolution'
- 'galaxies: formation'
- 'galaxies: high-redshift'
- 'galaxies: luminosity function'
- mass function
- 'galaxies: statistics'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1712.04451
month: '06'
oa: 1
oa_version: Preprint
page: 4725-4752
publication: Monthly Notices of the Royal Astronomical Society
publication_identifier:
eissn:
- 1365-2966
issn:
- 0035-8711
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Slicing COSMOS with SC4K: The evolution of typical Ly α emitters and the Ly α
escape fraction from z ∼ 2 to 6'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 476
year: '2018'
...
---
_id: '11584'
abstract:
- lang: eng
text: Observations show that star-forming galaxies reside on a tight 3D plane between
mass, gas-phase metallicity, and star formation rate (SFR), which can be explained
by the interplay between metal-poor gas inflows, SFR and outflows. However, different
metals are released on different time-scales, which may affect the slope of this
relation. Here, we use central, star-forming galaxies with Mstar = 109.0–10.5
M⊙ from the EAGLE hydrodynamical simulation to examine 3D relations between mass,
SFR, and chemical enrichment using absolute and relative C, N, O, and Fe abundances.
We show that the scatter is smaller when gas-phase α-enhancement is used rather
than metallicity. A similar plane also exists for stellar α-enhancement, implying
that present-day specific SFRs are correlated with long time-scale star formation
histories. Between z = 0 and 1, the α-enhancement plane is even more insensitive
to redshift than the plane using metallicity. However, it evolves at z > 1 due
to lagging iron yields. At fixed mass, galaxies with higher SFRs have star formation
histories shifted towards late times, are more α-enhanced, and this α-enhancement
increases with redshift as observed. These findings suggest that relations between
physical properties inferred from observations may be affected by systematic variations
in α-enhancements.
acknowledgement: We thank the anonymous referee for their constructive comments. JM
acknowledges the support of a Huygens PhD fellowship from Leiden University. We
thank Jarle Brinchmann, Rob Crain and David Sobral for discussions. We acknowledge
the use of the TOPCAT software (Taylor 2013) for assisting in rapid exploration
of multidimensional data sets and the use of PYTHON and its NUMPY, MATPLOTLIB, and
PANDAS packages.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Jorryt J
full_name: Matthee, Jorryt J
id: 7439a258-f3c0-11ec-9501-9df22fe06720
last_name: Matthee
orcid: 0000-0003-2871-127X
- first_name: Joop
full_name: Schaye, Joop
last_name: Schaye
citation:
ama: 'Matthee JJ, Schaye J. Star-forming galaxies are predicted to lie on a fundamental
plane of mass, star formation rate, and α-enhancement. Monthly Notices of the
Royal Astronomical Society: Letters. 2018;479(1):L34-L39. doi:10.1093/mnrasl/sly093'
apa: 'Matthee, J. J., & Schaye, J. (2018). Star-forming galaxies are predicted
to lie on a fundamental plane of mass, star formation rate, and α-enhancement.
Monthly Notices of the Royal Astronomical Society: Letters. Oxford University
Press. https://doi.org/10.1093/mnrasl/sly093'
chicago: 'Matthee, Jorryt J, and Joop Schaye. “Star-Forming Galaxies Are Predicted
to Lie on a Fundamental Plane of Mass, Star Formation Rate, and α-Enhancement.”
Monthly Notices of the Royal Astronomical Society: Letters. Oxford University
Press, 2018. https://doi.org/10.1093/mnrasl/sly093.'
ieee: 'J. J. Matthee and J. Schaye, “Star-forming galaxies are predicted to lie
on a fundamental plane of mass, star formation rate, and α-enhancement,” Monthly
Notices of the Royal Astronomical Society: Letters, vol. 479, no. 1. Oxford
University Press, pp. L34–L39, 2018.'
ista: 'Matthee JJ, Schaye J. 2018. Star-forming galaxies are predicted to lie on
a fundamental plane of mass, star formation rate, and α-enhancement. Monthly Notices
of the Royal Astronomical Society: Letters. 479(1), L34–L39.'
mla: 'Matthee, Jorryt J., and Joop Schaye. “Star-Forming Galaxies Are Predicted
to Lie on a Fundamental Plane of Mass, Star Formation Rate, and α-Enhancement.”
Monthly Notices of the Royal Astronomical Society: Letters, vol. 479, no.
1, Oxford University Press, 2018, pp. L34–39, doi:10.1093/mnrasl/sly093.'
short: 'J.J. Matthee, J. Schaye, Monthly Notices of the Royal Astronomical Society:
Letters 479 (2018) L34–L39.'
date_created: 2022-07-14T12:49:47Z
date_published: 2018-09-01T00:00:00Z
date_updated: 2022-08-19T08:35:45Z
day: '01'
doi: 10.1093/mnrasl/sly093
extern: '1'
external_id:
arxiv:
- '1802.06786'
intvolume: ' 479'
issue: '1'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
- 'galaxies: abundances'
- 'galaxies: evolution'
- 'galaxies: formation'
- 'galaxies: star formation'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1802.06786
month: '09'
oa: 1
oa_version: Preprint
page: L34 - L39
publication: 'Monthly Notices of the Royal Astronomical Society: Letters'
publication_identifier:
eissn:
- 1745-3933
issn:
- 1745-3925
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: Star-forming galaxies are predicted to lie on a fundamental plane of mass,
star formation rate, and α-enhancement
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 479
year: '2018'
...
---
_id: '11618'
abstract:
- lang: eng
text: Asteroseismology provides global stellar parameters such as masses, radii,
or surface gravities using mean global seismic parameters and effective temperature
for thousands of low-mass stars (0.8 M⊙ < M < 3 M⊙). This methodology has been
successfully applied to stars in which acoustic modes excited by turbulent convection
are measured. Other methods such as the Flicker technique can also be used to
determine stellar surface gravities, but only works for log g above 2.5 dex. In
this work, we present a new metric called FliPer (Flicker in spectral power density,
in opposition to the standard Flicker measurement which is computed in the time
domain); it is able to extend the range for which reliable surface gravities can
be obtained (0.1 < log g < 4.6 dex) without performing any seismic analysis for
stars brighter than Kp < 14. FliPer takes into account the average variability
of a star measured in the power density spectrum in a given range of frequencies.
However, FliPer values calculated on several ranges of frequency are required
to better characterize a star. Using a large set of asteroseismic targets it is
possible to calibrate the behavior of surface gravity with FliPer through machine
learning. This calibration made with a random forest regressor covers a wide range
of surface gravities from main-sequence stars to subgiants and red giants, with
very small uncertainties from 0.04 to 0.1 dex. FliPer values can be inserted in
automatic global seismic pipelines to either give an estimation of the stellar
surface gravity or to assess the quality of the seismic results by detecting any
outliers in the obtained νmax values. FliPer also constrains the surface gravities
of main-sequence dwarfs using only long-cadence data for which the Nyquist frequency
is too low to measure the acoustic-mode properties.
acknowledgement: We thank the anonymous referee for the very useful comments. We would
also like to thank M. Benbakoura for his help in analyzing the light curves of several
binary systems included in our set of stars. L.B. and R.A.G. acknowledge the support
from PLATO and GOLF CNES grants. S.M. acknowledges support from the National Aeronautics
and Space Administration under Grant NNX15AF13G, the National Science Foundation
grant AST-1411685, and the Ramon y Cajal fellowship no. RYC-2015-17697. E.C. is
funded by the European Union’s Horizon 2020 research and innovation program under
the Marie Sklodowska-Curie grant agreement no. 664931. O.J.H and B.M.R. acknowledge
the support of the UK Science and Technology Facilities Council (STFC). Funding
for the Stellar Astrophysics Centre is provided by the Danish National Research
Foundation (Grant DNRF106). This research has made use of NASA’s Astrophysics Data
System. Data presented in this paper were obtained from the Mikulski Archive for
Space Telescopes (MAST). STScI is operated by the Association of Universities for
Research in Astronomy, Inc., under NASA contract NAS5-26555.
article_number: A38
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Lisa Annabelle
full_name: Bugnet, Lisa Annabelle
id: d9edb345-f866-11ec-9b37-d119b5234501
last_name: Bugnet
orcid: 0000-0003-0142-4000
- first_name: R. A.
full_name: García, R. A.
last_name: García
- first_name: G. R.
full_name: Davies, G. R.
last_name: Davies
- first_name: S.
full_name: Mathur, S.
last_name: Mathur
- first_name: E.
full_name: Corsaro, E.
last_name: Corsaro
- first_name: O. J.
full_name: Hall, O. J.
last_name: Hall
- first_name: B. M.
full_name: Rendle, B. M.
last_name: Rendle
citation:
ama: 'Bugnet LA, García RA, Davies GR, et al. FliPer: A global measure of power
density to estimate surface gravities of main-sequence solar-like stars and red
giants. Astronomy & Astrophysics. 2018;620. doi:10.1051/0004-6361/201833106'
apa: 'Bugnet, L. A., García, R. A., Davies, G. R., Mathur, S., Corsaro, E., Hall,
O. J., & Rendle, B. M. (2018). FliPer: A global measure of power density to
estimate surface gravities of main-sequence solar-like stars and red giants. Astronomy
& Astrophysics. EDP Sciences. https://doi.org/10.1051/0004-6361/201833106'
chicago: 'Bugnet, Lisa Annabelle, R. A. García, G. R. Davies, S. Mathur, E. Corsaro,
O. J. Hall, and B. M. Rendle. “FliPer: A Global Measure of Power Density to Estimate
Surface Gravities of Main-Sequence Solar-like Stars and Red Giants.” Astronomy
& Astrophysics. EDP Sciences, 2018. https://doi.org/10.1051/0004-6361/201833106.'
ieee: 'L. A. Bugnet et al., “FliPer: A global measure of power density to
estimate surface gravities of main-sequence solar-like stars and red giants,”
Astronomy & Astrophysics, vol. 620. EDP Sciences, 2018.'
ista: 'Bugnet LA, García RA, Davies GR, Mathur S, Corsaro E, Hall OJ, Rendle BM.
2018. FliPer: A global measure of power density to estimate surface gravities
of main-sequence solar-like stars and red giants. Astronomy & Astrophysics.
620, A38.'
mla: 'Bugnet, Lisa Annabelle, et al. “FliPer: A Global Measure of Power Density
to Estimate Surface Gravities of Main-Sequence Solar-like Stars and Red Giants.”
Astronomy & Astrophysics, vol. 620, A38, EDP Sciences, 2018, doi:10.1051/0004-6361/201833106.'
short: L.A. Bugnet, R.A. García, G.R. Davies, S. Mathur, E. Corsaro, O.J. Hall,
B.M. Rendle, Astronomy & Astrophysics 620 (2018).
date_created: 2022-07-18T14:37:39Z
date_published: 2018-12-01T00:00:00Z
date_updated: 2022-08-22T07:41:07Z
day: '01'
doi: 10.1051/0004-6361/201833106
extern: '1'
external_id:
arxiv:
- '1809.05105'
intvolume: ' 620'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
- asteroseismology / methods
- data analysis / stars
- oscillations
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1809.05105
month: '12'
oa: 1
oa_version: Preprint
publication: Astronomy & Astrophysics
publication_identifier:
eissn:
- 1432-0746
issn:
- 0004-6361
publication_status: published
publisher: EDP Sciences
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'FliPer: A global measure of power density to estimate surface gravities of
main-sequence solar-like stars and red giants'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 620
year: '2018'
...
---
_id: '11619'
abstract:
- lang: eng
text: We report on the confirmation and mass determination of π Men c, the first
transiting planet discovered by NASA’s TESS space mission. π Men is a naked-eye
(V = 5.65 mag), quiet G0 V star that was previously known to host a sub-stellar
companion (π Men b) on a longperiod (Porb = 2091 days), eccentric (e = 0.64) orbit.
Using TESS time-series photometry, combined with Gaia data, published UCLES at
AAT Doppler measurements, and archival HARPS at ESO-3.6m radial velocities, we
found that π Men c is a close-in planet with an orbital period of Porb = 6.27
days, a mass of Mc = 4.52 ± 0.81 M⊕, and a radius of Rc = 2.06 ± 0.03 R⊕. Based
on the planet’s orbital period and size, π Men c is a super-Earth located at,
or close to, the radius gap, while its mass and bulk density suggest it may have
held on to a significant atmosphere. Because of the brightness of the host star,
this system is highly suitable for a wide range of further studies to characterize
the planetary atmosphere and dynamical properties. We also performed an asteroseismic
analysis of the TESS data and detected a hint of power excess consistent with
the seismic values expected for this star, although this result depends on the
photometric aperture used to extract the light curve. This marginal detection
is expected from pre-launch simulations hinting at the asteroseismic potential
of the TESS mission for longer, multi-sector observations and/or for more evolved
bright stars.
article_number: L10
article_processing_charge: No
article_type: letter_note
arxiv: 1
author:
- first_name: D.
full_name: Gandolfi, D.
last_name: Gandolfi
- first_name: O.
full_name: Barragán, O.
last_name: Barragán
- first_name: J. H.
full_name: Livingston, J. H.
last_name: Livingston
- first_name: M.
full_name: Fridlund, M.
last_name: Fridlund
- first_name: A. B.
full_name: Justesen, A. B.
last_name: Justesen
- first_name: S.
full_name: Redfield, S.
last_name: Redfield
- first_name: L.
full_name: Fossati, L.
last_name: Fossati
- first_name: S.
full_name: Mathur, S.
last_name: Mathur
- first_name: S.
full_name: Grziwa, S.
last_name: Grziwa
- first_name: J.
full_name: Cabrera, J.
last_name: Cabrera
- first_name: R. A.
full_name: García, R. A.
last_name: García
- first_name: C. M.
full_name: Persson, C. M.
last_name: Persson
- first_name: V.
full_name: Van Eylen, V.
last_name: Van Eylen
- first_name: A. P.
full_name: Hatzes, A. P.
last_name: Hatzes
- first_name: D.
full_name: Hidalgo, D.
last_name: Hidalgo
- first_name: S.
full_name: Albrecht, S.
last_name: Albrecht
- first_name: Lisa Annabelle
full_name: Bugnet, Lisa Annabelle
id: d9edb345-f866-11ec-9b37-d119b5234501
last_name: Bugnet
orcid: 0000-0003-0142-4000
- first_name: W. D.
full_name: Cochran, W. D.
last_name: Cochran
- first_name: Sz.
full_name: Csizmadia, Sz.
last_name: Csizmadia
- first_name: H.
full_name: Deeg, H.
last_name: Deeg
- first_name: Ph.
full_name: Eigmüller, Ph.
last_name: Eigmüller
- first_name: M.
full_name: Endl, M.
last_name: Endl
- first_name: A.
full_name: Erikson, A.
last_name: Erikson
- first_name: M.
full_name: Esposito, M.
last_name: Esposito
- first_name: E.
full_name: Guenther, E.
last_name: Guenther
- first_name: J.
full_name: Korth, J.
last_name: Korth
- first_name: R.
full_name: Luque, R.
last_name: Luque
- first_name: P.
full_name: Montañes Rodríguez, P.
last_name: Montañes Rodríguez
- first_name: D.
full_name: Nespral, D.
last_name: Nespral
- first_name: G.
full_name: Nowak, G.
last_name: Nowak
- first_name: M.
full_name: Pätzold, M.
last_name: Pätzold
- first_name: J.
full_name: Prieto-Arranz, J.
last_name: Prieto-Arranz
citation:
ama: 'Gandolfi D, Barragán O, Livingston JH, et al. TESS’s first planet: A super-Earth
transiting the naked-eye star π Mensae. Astronomy & Astrophysics. 2018;619.
doi:10.1051/0004-6361/201834289'
apa: 'Gandolfi, D., Barragán, O., Livingston, J. H., Fridlund, M., Justesen, A.
B., Redfield, S., … Prieto-Arranz, J. (2018). TESS’s first planet: A super-Earth
transiting the naked-eye star π Mensae. Astronomy & Astrophysics. EDP
Sciences. https://doi.org/10.1051/0004-6361/201834289'
chicago: 'Gandolfi, D., O. Barragán, J. H. Livingston, M. Fridlund, A. B. Justesen,
S. Redfield, L. Fossati, et al. “TESS’s First Planet: A Super-Earth Transiting
the Naked-Eye Star π Mensae.” Astronomy & Astrophysics. EDP Sciences,
2018. https://doi.org/10.1051/0004-6361/201834289.'
ieee: 'D. Gandolfi et al., “TESS’s first planet: A super-Earth transiting
the naked-eye star π Mensae,” Astronomy & Astrophysics, vol. 619. EDP
Sciences, 2018.'
ista: 'Gandolfi D, Barragán O, Livingston JH, Fridlund M, Justesen AB, Redfield
S, Fossati L, Mathur S, Grziwa S, Cabrera J, García RA, Persson CM, Van Eylen
V, Hatzes AP, Hidalgo D, Albrecht S, Bugnet LA, Cochran WD, Csizmadia S, Deeg
H, Eigmüller P, Endl M, Erikson A, Esposito M, Guenther E, Korth J, Luque R, Montañes
Rodríguez P, Nespral D, Nowak G, Pätzold M, Prieto-Arranz J. 2018. TESS’s first
planet: A super-Earth transiting the naked-eye star π Mensae. Astronomy &
Astrophysics. 619, L10.'
mla: 'Gandolfi, D., et al. “TESS’s First Planet: A Super-Earth Transiting the Naked-Eye
Star π Mensae.” Astronomy & Astrophysics, vol. 619, L10, EDP Sciences,
2018, doi:10.1051/0004-6361/201834289.'
short: D. Gandolfi, O. Barragán, J.H. Livingston, M. Fridlund, A.B. Justesen, S.
Redfield, L. Fossati, S. Mathur, S. Grziwa, J. Cabrera, R.A. García, C.M. Persson,
V. Van Eylen, A.P. Hatzes, D. Hidalgo, S. Albrecht, L.A. Bugnet, W.D. Cochran,
S. Csizmadia, H. Deeg, P. Eigmüller, M. Endl, A. Erikson, M. Esposito, E. Guenther,
J. Korth, R. Luque, P. Montañes Rodríguez, D. Nespral, G. Nowak, M. Pätzold, J.
Prieto-Arranz, Astronomy & Astrophysics 619 (2018).
date_created: 2022-07-18T14:41:16Z
date_published: 2018-11-22T00:00:00Z
date_updated: 2022-08-22T07:43:29Z
day: '22'
doi: 10.1051/0004-6361/201834289
extern: '1'
external_id:
arxiv:
- '1809.07573'
intvolume: ' 619'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
- planetary systems / planets and satellites
- detection / planets and satellites
- fundamental parameters / planets and satellites
- terrestrial planets / stars
- fundamental parameters
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1809.07573
month: '11'
oa: 1
oa_version: Preprint
publication: Astronomy & Astrophysics
publication_identifier:
eissn:
- 1432-0746
issn:
- 0004-6361
publication_status: published
publisher: EDP Sciences
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'TESS’s first planet: A super-Earth transiting the naked-eye star π Mensae'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 619
year: '2018'
...
---
_id: '11620'
abstract:
- lang: eng
text: We report the discovery and characterization of HD 89345b (K2-234b; EPIC 248777106b),
a Saturn-sized planet orbiting a slightly evolved star. HD 89345 is a bright star
(V = 9.3 mag) observed by the K2 mission with 1 min time sampling. It exhibits
solar-like oscillations. We conducted asteroseismology to determine the parameters
of the star, finding the mass and radius to be 1.12+0.04−0.01M⊙ and 1.657+0.020−0.004R⊙,
respectively. The star appears to have recently left the main sequence, based
on the inferred age, 9.4+0.4−1.3Gyr, and the non-detection of mixed modes. The
star hosts a ‘warm Saturn’ (P = 11.8 d, Rp = 6.86 ± 0.14 R⊕). Radial-velocity
follow-up observations performed with the FIbre-fed Echelle Spectrograph, HARPS,
and HARPS-N spectrographs show that the planet has a mass of 35.7 ± 3.3 M⊕. The
data also show that the planet’s orbit is eccentric (e ≈ 0.2). An investigation
of the rotational splitting of the oscillation frequencies of the star yields
no conclusive evidence on the stellar inclination angle. We further obtained Rossiter–McLaughlin
observations, which result in a broad posterior of the stellar obliquity. The
planet seems to confirm to the same patterns that have been observed for other
sub-Saturns regarding planet mass and multiplicity, orbital eccentricity, and
stellar metallicity.
acknowledgement: 'We gratefully acknowledge many helpful suggestions by the anonymous
referee. Based on observations made with a) the Nordic Optical Telescope, operated
by the Nordic Optical Telescope Scientific Association at the Observatorio del Roque
de los Muchachos; b) the ESO-3.6m telescope at La Silla Observatory under programme
ID 0100.C-0808; c) the Italian Telescopio Nazionale Galileo operated on the island
of La Palma by the Fundación Galileo Galilei of the Istituto Nazionale di Astrofisica.
NESSI was funded by the NASA Exoplanet Exploration Program and the NASA Ames Research
Center. NESSI was built at the Ames Research Center by Steve B. Howell, Nic Scott,
Elliott P. Horch, and Emmett Quigley. This project has received funding from the
European Union’s Horizon 2020 research and innovation programme under grant agreement
No 730890. This material reflects only the authors views and the Commission is not
liable for any use that may be made of the information contained therein. DG gratefully
acknowledges the financial support of the Programma Giovani Ricercatori – Rita Levi
Montalcini – Rientro dei Cervelli (2012) awarded by the Italian Ministry of Education,
Universities and Research (MIUR). SaM would like to acknowledge support from the
Ramon y Cajal fellowship number RYC-2015-17697. AJ, MH, and SA acknowledge support
by the Danish Council for Independent Research, through a DFF Sapere Aude Starting
Grant nr. 4181-00487B. SzCs, APH, MP, and HR acknowledge the support of the DFG
priority program SPP 1992Exploring the Diversity of Extrasolar Planets (grants HA
3279/12-1, PA 525/18-1, PA5 25/19-1 and PA525/20-1, RA 714/14-1) HD, CR, and FPH
acknowledge the financial support from MINECO under grants ESP2015-65712-C5-4-R
and AYA2016-76378-P. This paper has made use of the IAC Supercomputing facility
HTCondor (http://research.cs.wisc.edu/htcondor/), partly financed by the Ministry
of Economy and Competitiveness with FEDER funds, code IACA13-3E-2493. MF and CMP
gratefully acknowledge the support of the Swedish National Space Board. RAG and
StM thanks the support of the CNES PLATO grant. PGB is a postdoctoral fellow in
the MINECO-programme ’Juan de la Cierva Incorporacion’ (IJCI-2015-26034). StM acknowledges
support from ERC through SPIRE grant (647383) and from ISSI through the ENCELADE
2.0 team. VSA acknowledges support from VILLUM FONDEN (research grant 10118). MNL
acknowledges support from the ESA-PRODEX programme. Funding for the Stellar Astrophysics
Centre is provided by The Danish National Research Foundation (Grant agreement no.:
DNRF106) This work has made use of data from the European Space Agency (ESA) mission
Gaia (https://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and
Analysis Consortium (DPAC, https://www.cosmos.esa.int/web/gaia/dpac/consortium).
Funding for the DPAC has been provided by national institutions, in particular the
institutions participating in the Gaia Multilateral Agreement. This research was
made with the use of NASA’s Astrophysics Data System and the NASA Exoplanet Archive,
which is operated by the California Institute of Technology, under contract with
the National Aeronautics and Space Administration under the Exoplanet Exploration
Program.'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: V
full_name: Van Eylen, V
last_name: Van Eylen
- first_name: F
full_name: Dai, F
last_name: Dai
- first_name: S
full_name: Mathur, S
last_name: Mathur
- first_name: D
full_name: Gandolfi, D
last_name: Gandolfi
- first_name: S
full_name: Albrecht, S
last_name: Albrecht
- first_name: M
full_name: Fridlund, M
last_name: Fridlund
- first_name: R A
full_name: García, R A
last_name: García
- first_name: E
full_name: Guenther, E
last_name: Guenther
- first_name: M
full_name: Hjorth, M
last_name: Hjorth
- first_name: A B
full_name: Justesen, A B
last_name: Justesen
- first_name: J
full_name: Livingston, J
last_name: Livingston
- first_name: M N
full_name: Lund, M N
last_name: Lund
- first_name: F
full_name: Pérez Hernández, F
last_name: Pérez Hernández
- first_name: J
full_name: Prieto-Arranz, J
last_name: Prieto-Arranz
- first_name: C
full_name: Regulo, C
last_name: Regulo
- first_name: Lisa Annabelle
full_name: Bugnet, Lisa Annabelle
id: d9edb345-f866-11ec-9b37-d119b5234501
last_name: Bugnet
orcid: 0000-0003-0142-4000
- first_name: M E
full_name: Everett, M E
last_name: Everett
- first_name: T
full_name: Hirano, T
last_name: Hirano
- first_name: D
full_name: Nespral, D
last_name: Nespral
- first_name: G
full_name: Nowak, G
last_name: Nowak
- first_name: E
full_name: Palle, E
last_name: Palle
- first_name: V
full_name: Silva Aguirre, V
last_name: Silva Aguirre
- first_name: T
full_name: Trifonov, T
last_name: Trifonov
- first_name: J N
full_name: Winn, J N
last_name: Winn
- first_name: O
full_name: Barragán, O
last_name: Barragán
- first_name: P G
full_name: Beck, P G
last_name: Beck
- first_name: W J
full_name: Chaplin, W J
last_name: Chaplin
- first_name: W D
full_name: Cochran, W D
last_name: Cochran
- first_name: S
full_name: Csizmadia, S
last_name: Csizmadia
- first_name: H
full_name: Deeg, H
last_name: Deeg
- first_name: M
full_name: Endl, M
last_name: Endl
- first_name: P
full_name: Heeren, P
last_name: Heeren
- first_name: S
full_name: Grziwa, S
last_name: Grziwa
- first_name: A P
full_name: Hatzes, A P
last_name: Hatzes
- first_name: D
full_name: Hidalgo, D
last_name: Hidalgo
- first_name: J
full_name: Korth, J
last_name: Korth
- first_name: S
full_name: Mathis, S
last_name: Mathis
- first_name: P
full_name: Montañes Rodriguez, P
last_name: Montañes Rodriguez
- first_name: N
full_name: Narita, N
last_name: Narita
- first_name: M
full_name: Patzold, M
last_name: Patzold
- first_name: C M
full_name: Persson, C M
last_name: Persson
- first_name: F
full_name: Rodler, F
last_name: Rodler
- first_name: A M S
full_name: Smith, A M S
last_name: Smith
citation:
ama: 'Van Eylen V, Dai F, Mathur S, et al. HD 89345: A bright oscillating star hosting
a transiting warm Saturn-sized planet observed by K2. Monthly Notices of the
Royal Astronomical Society. 2018;478(4):4866-4880. doi:10.1093/mnras/sty1390'
apa: 'Van Eylen, V., Dai, F., Mathur, S., Gandolfi, D., Albrecht, S., Fridlund,
M., … Smith, A. M. S. (2018). HD 89345: A bright oscillating star hosting a transiting
warm Saturn-sized planet observed by K2. Monthly Notices of the Royal Astronomical
Society. Oxford University Press. https://doi.org/10.1093/mnras/sty1390'
chicago: 'Van Eylen, V, F Dai, S Mathur, D Gandolfi, S Albrecht, M Fridlund, R A
García, et al. “HD 89345: A Bright Oscillating Star Hosting a Transiting Warm
Saturn-Sized Planet Observed by K2.” Monthly Notices of the Royal Astronomical
Society. Oxford University Press, 2018. https://doi.org/10.1093/mnras/sty1390.'
ieee: 'V. Van Eylen et al., “HD 89345: A bright oscillating star hosting
a transiting warm Saturn-sized planet observed by K2,” Monthly Notices of the
Royal Astronomical Society, vol. 478, no. 4. Oxford University Press, pp.
4866–4880, 2018.'
ista: 'Van Eylen V, Dai F, Mathur S, Gandolfi D, Albrecht S, Fridlund M, García
RA, Guenther E, Hjorth M, Justesen AB, Livingston J, Lund MN, Pérez Hernández
F, Prieto-Arranz J, Regulo C, Bugnet LA, Everett ME, Hirano T, Nespral D, Nowak
G, Palle E, Silva Aguirre V, Trifonov T, Winn JN, Barragán O, Beck PG, Chaplin
WJ, Cochran WD, Csizmadia S, Deeg H, Endl M, Heeren P, Grziwa S, Hatzes AP, Hidalgo
D, Korth J, Mathis S, Montañes Rodriguez P, Narita N, Patzold M, Persson CM, Rodler
F, Smith AMS. 2018. HD 89345: A bright oscillating star hosting a transiting warm
Saturn-sized planet observed by K2. Monthly Notices of the Royal Astronomical
Society. 478(4), 4866–4880.'
mla: 'Van Eylen, V., et al. “HD 89345: A Bright Oscillating Star Hosting a Transiting
Warm Saturn-Sized Planet Observed by K2.” Monthly Notices of the Royal Astronomical
Society, vol. 478, no. 4, Oxford University Press, 2018, pp. 4866–80, doi:10.1093/mnras/sty1390.'
short: V. Van Eylen, F. Dai, S. Mathur, D. Gandolfi, S. Albrecht, M. Fridlund, R.A.
García, E. Guenther, M. Hjorth, A.B. Justesen, J. Livingston, M.N. Lund, F. Pérez Hernández,
J. Prieto-Arranz, C. Regulo, L.A. Bugnet, M.E. Everett, T. Hirano, D. Nespral,
G. Nowak, E. Palle, V. Silva Aguirre, T. Trifonov, J.N. Winn, O. Barragán, P.G.
Beck, W.J. Chaplin, W.D. Cochran, S. Csizmadia, H. Deeg, M. Endl, P. Heeren, S.
Grziwa, A.P. Hatzes, D. Hidalgo, J. Korth, S. Mathis, P. Montañes Rodriguez, N.
Narita, M. Patzold, C.M. Persson, F. Rodler, A.M.S. Smith, Monthly Notices of
the Royal Astronomical Society 478 (2018) 4866–4880.
date_created: 2022-07-18T14:43:17Z
date_published: 2018-08-01T00:00:00Z
date_updated: 2022-08-22T07:45:38Z
day: '01'
doi: 10.1093/mnras/sty1390
extern: '1'
external_id:
arxiv:
- '1805.01860'
intvolume: ' 478'
issue: '4'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
- asteroseismology
- 'planets and satellites: composition'
- 'planets and satellites: formation'
- 'planets and satellites: fundamental parameters'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1805.01860
month: '08'
oa: 1
oa_version: Preprint
page: 4866-4880
publication: Monthly Notices of the Royal Astronomical Society
publication_identifier:
eissn:
- 1365-2966
issn:
- 0035-8711
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'HD 89345: A bright oscillating star hosting a transiting warm Saturn-sized
planet observed by K2'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 478
year: '2018'
...