---
_id: '6590'
abstract:
- lang: eng
text: 'Modern machine learning methods often require more data for training than
a single expert can provide. Therefore, it has become a standard procedure to
collect data from external sources, e.g. via crowdsourcing. Unfortunately, the
quality of these sources is not always guaranteed. As additional complications,
the data might be stored in a distributed way, or might even have to remain private.
In this work, we address the question of how to learn robustly in such scenarios.
Studying the problem through the lens of statistical learning theory, we derive
a procedure that allows for learning from all available sources, yet automatically
suppresses irrelevant or corrupted data. We show by extensive experiments that
our method provides significant improvements over alternative approaches from
robust statistics and distributed optimization. '
article_processing_charge: No
arxiv: 1
author:
- first_name: Nikola H
full_name: Konstantinov, Nikola H
id: 4B9D76E4-F248-11E8-B48F-1D18A9856A87
last_name: Konstantinov
- first_name: Christoph
full_name: Lampert, Christoph
id: 40C20FD2-F248-11E8-B48F-1D18A9856A87
last_name: Lampert
orcid: 0000-0001-8622-7887
citation:
ama: 'Konstantinov NH, Lampert C. Robust learning from untrusted sources. In: Proceedings
of the 36th International Conference on Machine Learning. Vol 97. ML Research
Press; 2019:3488-3498.'
apa: 'Konstantinov, N. H., & Lampert, C. (2019). Robust learning from untrusted
sources. In Proceedings of the 36th International Conference on Machine Learning
(Vol. 97, pp. 3488–3498). Long Beach, CA, USA: ML Research Press.'
chicago: Konstantinov, Nikola H, and Christoph Lampert. “Robust Learning from Untrusted
Sources.” In Proceedings of the 36th International Conference on Machine Learning,
97:3488–98. ML Research Press, 2019.
ieee: N. H. Konstantinov and C. Lampert, “Robust learning from untrusted sources,”
in Proceedings of the 36th International Conference on Machine Learning,
Long Beach, CA, USA, 2019, vol. 97, pp. 3488–3498.
ista: 'Konstantinov NH, Lampert C. 2019. Robust learning from untrusted sources.
Proceedings of the 36th International Conference on Machine Learning. ICML: International
Conference on Machine Learning vol. 97, 3488–3498.'
mla: Konstantinov, Nikola H., and Christoph Lampert. “Robust Learning from Untrusted
Sources.” Proceedings of the 36th International Conference on Machine Learning,
vol. 97, ML Research Press, 2019, pp. 3488–98.
short: N.H. Konstantinov, C. Lampert, in:, Proceedings of the 36th International
Conference on Machine Learning, ML Research Press, 2019, pp. 3488–3498.
conference:
end_date: 2919-06-15
location: Long Beach, CA, USA
name: 'ICML: International Conference on Machine Learning'
start_date: 2019-06-10
date_created: 2019-06-27T14:18:23Z
date_published: 2019-06-01T00:00:00Z
date_updated: 2023-10-17T12:31:55Z
day: '01'
department:
- _id: ChLa
ec_funded: 1
external_id:
arxiv:
- '1901.10310'
intvolume: ' 97'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1901.10310
month: '06'
oa: 1
oa_version: Preprint
page: 3488-3498
project:
- _id: 2532554C-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '308036'
name: Lifelong Learning of Visual Scene Understanding
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '665385'
name: International IST Doctoral Program
publication: Proceedings of the 36th International Conference on Machine Learning
publication_status: published
publisher: ML Research Press
quality_controlled: '1'
related_material:
record:
- id: '10799'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: Robust learning from untrusted sources
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 97
year: '2019'
...
---
_id: '6596'
abstract:
- lang: eng
text: It is well known that many problems in image recovery, signal processing,
and machine learning can be modeled as finding zeros of the sum of maximal monotone
and Lipschitz continuous monotone operators. Many papers have studied forward-backward
splitting methods for finding zeros of the sum of two monotone operators in Hilbert
spaces. Most of the proposed splitting methods in the literature have been proposed
for the sum of maximal monotone and inverse-strongly monotone operators in Hilbert
spaces. In this paper, we consider splitting methods for finding zeros of the
sum of maximal monotone operators and Lipschitz continuous monotone operators
in Banach spaces. We obtain weak and strong convergence results for the zeros
of the sum of maximal monotone and Lipschitz continuous monotone operators in
Banach spaces. Many already studied problems in the literature can be considered
as special cases of this paper.
article_number: '138'
article_processing_charge: Yes (via OA deal)
article_type: original
arxiv: 1
author:
- first_name: Yekini
full_name: Shehu, Yekini
id: 3FC7CB58-F248-11E8-B48F-1D18A9856A87
last_name: Shehu
orcid: 0000-0001-9224-7139
citation:
ama: Shehu Y. Convergence results of forward-backward algorithms for sum of monotone
operators in Banach spaces. Results in Mathematics. 2019;74(4). doi:10.1007/s00025-019-1061-4
apa: Shehu, Y. (2019). Convergence results of forward-backward algorithms for sum
of monotone operators in Banach spaces. Results in Mathematics. Springer.
https://doi.org/10.1007/s00025-019-1061-4
chicago: Shehu, Yekini. “Convergence Results of Forward-Backward Algorithms for
Sum of Monotone Operators in Banach Spaces.” Results in Mathematics. Springer,
2019. https://doi.org/10.1007/s00025-019-1061-4.
ieee: Y. Shehu, “Convergence results of forward-backward algorithms for sum of monotone
operators in Banach spaces,” Results in Mathematics, vol. 74, no. 4. Springer,
2019.
ista: Shehu Y. 2019. Convergence results of forward-backward algorithms for sum
of monotone operators in Banach spaces. Results in Mathematics. 74(4), 138.
mla: Shehu, Yekini. “Convergence Results of Forward-Backward Algorithms for Sum
of Monotone Operators in Banach Spaces.” Results in Mathematics, vol. 74,
no. 4, 138, Springer, 2019, doi:10.1007/s00025-019-1061-4.
short: Y. Shehu, Results in Mathematics 74 (2019).
date_created: 2019-06-29T10:11:30Z
date_published: 2019-12-01T00:00:00Z
date_updated: 2023-08-28T12:26:22Z
day: '01'
ddc:
- '000'
department:
- _id: VlKo
doi: 10.1007/s00025-019-1061-4
ec_funded: 1
external_id:
arxiv:
- '2101.09068'
isi:
- '000473237500002'
file:
- access_level: open_access
checksum: c6d18cb1e16fc0c36a0e0f30b4ebbc2d
content_type: application/pdf
creator: kschuh
date_created: 2019-07-03T15:20:40Z
date_updated: 2020-07-14T12:47:34Z
file_id: '6605'
file_name: Springer_2019_Shehu.pdf
file_size: 466942
relation: main_file
file_date_updated: 2020-07-14T12:47:34Z
has_accepted_license: '1'
intvolume: ' 74'
isi: 1
issue: '4'
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
project:
- _id: 25FBA906-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '616160'
name: 'Discrete Optimization in Computer Vision: Theory and Practice'
- _id: B67AFEDC-15C9-11EA-A837-991A96BB2854
name: IST Austria Open Access Fund
publication: Results in Mathematics
publication_identifier:
eissn:
- 1420-9012
issn:
- 1422-6383
publication_status: published
publisher: Springer
quality_controlled: '1'
scopus_import: '1'
status: public
title: Convergence results of forward-backward algorithms for sum of monotone operators
in Banach spaces
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 74
year: '2019'
...
---
_id: '6601'
abstract:
- lang: eng
text: There is increasing evidence that both mechanical and biochemical signals
play important roles in development and disease. The development of complex organisms,
in particular, has been proposed to rely on the feedback between mechanical and
biochemical patterning events. This feedback occurs at the molecular level via
mechanosensation but can also arise as an emergent property of the system at the
cellular and tissue level. In recent years, dynamic changes in tissue geometry,
flow, rheology, and cell fate specification have emerged as key platforms of mechanochemical
feedback loops in multiple processes. Here, we review recent experimental and
theoretical advances in understanding how these feedbacks function in development
and disease.
article_processing_charge: No
article_type: review
author:
- first_name: Edouard B
full_name: Hannezo, Edouard B
id: 3A9DB764-F248-11E8-B48F-1D18A9856A87
last_name: Hannezo
orcid: 0000-0001-6005-1561
- first_name: Carl-Philipp J
full_name: Heisenberg, Carl-Philipp J
id: 39427864-F248-11E8-B48F-1D18A9856A87
last_name: Heisenberg
orcid: 0000-0002-0912-4566
citation:
ama: Hannezo EB, Heisenberg C-PJ. Mechanochemical feedback loops in development
and disease. Cell. 2019;178(1):12-25. doi:10.1016/j.cell.2019.05.052
apa: Hannezo, E. B., & Heisenberg, C.-P. J. (2019). Mechanochemical feedback
loops in development and disease. Cell. Elsevier. https://doi.org/10.1016/j.cell.2019.05.052
chicago: Hannezo, Edouard B, and Carl-Philipp J Heisenberg. “Mechanochemical Feedback
Loops in Development and Disease.” Cell. Elsevier, 2019. https://doi.org/10.1016/j.cell.2019.05.052.
ieee: E. B. Hannezo and C.-P. J. Heisenberg, “Mechanochemical feedback loops in
development and disease,” Cell, vol. 178, no. 1. Elsevier, pp. 12–25, 2019.
ista: Hannezo EB, Heisenberg C-PJ. 2019. Mechanochemical feedback loops in development
and disease. Cell. 178(1), 12–25.
mla: Hannezo, Edouard B., and Carl-Philipp J. Heisenberg. “Mechanochemical Feedback
Loops in Development and Disease.” Cell, vol. 178, no. 1, Elsevier, 2019,
pp. 12–25, doi:10.1016/j.cell.2019.05.052.
short: E.B. Hannezo, C.-P.J. Heisenberg, Cell 178 (2019) 12–25.
date_created: 2019-06-30T21:59:11Z
date_published: 2019-07-27T00:00:00Z
date_updated: 2023-08-28T12:25:21Z
day: '27'
department:
- _id: CaHe
- _id: EdHa
doi: 10.1016/j.cell.2019.05.052
ec_funded: 1
external_id:
isi:
- '000473002700005'
pmid:
- '31251912'
intvolume: ' 178'
isi: 1
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1016/j.cell.2019.05.052
month: '07'
oa: 1
oa_version: Published Version
page: 12-25
pmid: 1
project:
- _id: 260F1432-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '742573'
name: Interaction and feedback between cell mechanics and fate specification in
vertebrate gastrulation
- _id: 268294B6-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P31639
name: Active mechano-chemical description of the cell cytoskeleton
publication: Cell
publication_identifier:
issn:
- '00928674'
publication_status: published
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: Mechanochemical feedback loops in development and disease
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 178
year: '2019'
...
---
_id: '6607'
abstract:
- lang: eng
text: Acute myeloid leukemia (AML) is a heterogeneous disease with respect to its
genetic and molecular basis and to patients´ outcome. Clinical, cytogenetic, and
mutational data are used to classify patients into risk groups with different
survival, however, within-group heterogeneity is still an issue. Here, we used
a robust likelihood-based survival modeling approach and publicly available gene
expression data to identify a minimal number of genes whose combined expression
values were prognostic of overall survival. The resulting gene expression signature
(4-GES) consisted of 4 genes (SOCS2, IL2RA, NPDC1, PHGDH), predicted patient survival
as an independent prognostic parameter in several cohorts of AML patients (total,
1272 patients), and further refined prognostication based on the European Leukemia
Net classification. An oncogenic role of the top scoring gene in this signature,
SOCS2, was investigated using MLL-AF9 and Flt3-ITD/NPM1c driven mouse models of
AML. SOCS2 promoted leukemogenesis as well as the abundance, quiescence, and activity
of AML stem cells. Overall, the 4-GES represents a highly discriminating prognostic
parameter in AML, whose clinical applicability is greatly enhanced by its small
number of genes. The newly established role of SOCS2 in leukemia aggressiveness
and stemness raises the possibility that the signature might even be exploitable
therapeutically.
article_number: '9139'
article_processing_charge: No
author:
- first_name: Chi Huu
full_name: Nguyen, Chi Huu
last_name: Nguyen
- first_name: Tobias
full_name: Glüxam, Tobias
last_name: Glüxam
- first_name: Angela
full_name: Schlerka, Angela
last_name: Schlerka
- first_name: Katharina
full_name: Bauer, Katharina
id: 2ED6B14C-F248-11E8-B48F-1D18A9856A87
last_name: Bauer
- first_name: Alexander M.
full_name: Grandits, Alexander M.
last_name: Grandits
- first_name: Hubert
full_name: Hackl, Hubert
last_name: Hackl
- first_name: Oliver
full_name: Dovey, Oliver
last_name: Dovey
- first_name: Sabine
full_name: Zöchbauer-Müller, Sabine
last_name: Zöchbauer-Müller
- first_name: Jonathan L.
full_name: Cooper, Jonathan L.
last_name: Cooper
- first_name: George S.
full_name: Vassiliou, George S.
last_name: Vassiliou
- first_name: Dagmar
full_name: Stoiber, Dagmar
last_name: Stoiber
- first_name: Rotraud
full_name: Wieser, Rotraud
last_name: Wieser
- first_name: Gerwin
full_name: Heller, Gerwin
last_name: Heller
citation:
ama: Nguyen CH, Glüxam T, Schlerka A, et al. SOCS2 is part of a highly prognostic
4-gene signature in AML and promotes disease aggressiveness. Scientific Reports.
2019;9(1). doi:10.1038/s41598-019-45579-0
apa: Nguyen, C. H., Glüxam, T., Schlerka, A., Bauer, K., Grandits, A. M., Hackl,
H., … Heller, G. (2019). SOCS2 is part of a highly prognostic 4-gene signature
in AML and promotes disease aggressiveness. Scientific Reports. Nature
Publishing Group. https://doi.org/10.1038/s41598-019-45579-0
chicago: Nguyen, Chi Huu, Tobias Glüxam, Angela Schlerka, Katharina Bauer, Alexander
M. Grandits, Hubert Hackl, Oliver Dovey, et al. “SOCS2 Is Part of a Highly Prognostic
4-Gene Signature in AML and Promotes Disease Aggressiveness.” Scientific Reports.
Nature Publishing Group, 2019. https://doi.org/10.1038/s41598-019-45579-0.
ieee: C. H. Nguyen et al., “SOCS2 is part of a highly prognostic 4-gene signature
in AML and promotes disease aggressiveness,” Scientific Reports, vol. 9,
no. 1. Nature Publishing Group, 2019.
ista: Nguyen CH, Glüxam T, Schlerka A, Bauer K, Grandits AM, Hackl H, Dovey O, Zöchbauer-Müller
S, Cooper JL, Vassiliou GS, Stoiber D, Wieser R, Heller G. 2019. SOCS2 is part
of a highly prognostic 4-gene signature in AML and promotes disease aggressiveness.
Scientific Reports. 9(1), 9139.
mla: Nguyen, Chi Huu, et al. “SOCS2 Is Part of a Highly Prognostic 4-Gene Signature
in AML and Promotes Disease Aggressiveness.” Scientific Reports, vol. 9,
no. 1, 9139, Nature Publishing Group, 2019, doi:10.1038/s41598-019-45579-0.
short: C.H. Nguyen, T. Glüxam, A. Schlerka, K. Bauer, A.M. Grandits, H. Hackl, O.
Dovey, S. Zöchbauer-Müller, J.L. Cooper, G.S. Vassiliou, D. Stoiber, R. Wieser,
G. Heller, Scientific Reports 9 (2019).
date_created: 2019-07-07T21:59:19Z
date_published: 2019-06-24T00:00:00Z
date_updated: 2023-08-28T12:26:51Z
day: '24'
ddc:
- '576'
department:
- _id: PreCl
doi: 10.1038/s41598-019-45579-0
external_id:
isi:
- '000472597400042'
file:
- access_level: open_access
checksum: 3283522fffadf4b5fc8c7adfe3ba4564
content_type: application/pdf
creator: kschuh
date_created: 2019-07-08T15:15:28Z
date_updated: 2020-07-14T12:47:34Z
file_id: '6623'
file_name: nature_2019_Nguyen.pdf
file_size: 2017352
relation: main_file
file_date_updated: 2020-07-14T12:47:34Z
has_accepted_license: '1'
intvolume: ' 9'
isi: 1
issue: '1'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
publication: Scientific Reports
publication_status: published
publisher: Nature Publishing Group
quality_controlled: '1'
scopus_import: '1'
status: public
title: SOCS2 is part of a highly prognostic 4-gene signature in AML and promotes disease
aggressiveness
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 9
year: '2019'
...
---
_id: '6608'
abstract:
- lang: eng
text: We use the canonical bases produced by the tri-partition algorithm in (Edelsbrunner
and Ölsböck, 2018) to open and close holes in a polyhedral complex, K. In a concrete
application, we consider the Delaunay mosaic of a finite set, we let K be an Alpha
complex, and we use the persistence diagram of the distance function to guide
the hole opening and closing operations. The dependences between the holes define
a partial order on the cells in K that characterizes what can and what cannot
be constructed using the operations. The relations in this partial order reveal
structural information about the underlying filtration of complexes beyond what
is expressed by the persistence diagram.
article_processing_charge: No
author:
- first_name: Herbert
full_name: Edelsbrunner, Herbert
id: 3FB178DA-F248-11E8-B48F-1D18A9856A87
last_name: Edelsbrunner
orcid: 0000-0002-9823-6833
- first_name: Katharina
full_name: Ölsböck, Katharina
id: 4D4AA390-F248-11E8-B48F-1D18A9856A87
last_name: Ölsböck
orcid: 0000-0002-4672-8297
citation:
ama: Edelsbrunner H, Ölsböck K. Holes and dependences in an ordered complex. Computer
Aided Geometric Design. 2019;73:1-15. doi:10.1016/j.cagd.2019.06.003
apa: Edelsbrunner, H., & Ölsböck, K. (2019). Holes and dependences in an ordered
complex. Computer Aided Geometric Design. Elsevier. https://doi.org/10.1016/j.cagd.2019.06.003
chicago: Edelsbrunner, Herbert, and Katharina Ölsböck. “Holes and Dependences in
an Ordered Complex.” Computer Aided Geometric Design. Elsevier, 2019. https://doi.org/10.1016/j.cagd.2019.06.003.
ieee: H. Edelsbrunner and K. Ölsböck, “Holes and dependences in an ordered complex,”
Computer Aided Geometric Design, vol. 73. Elsevier, pp. 1–15, 2019.
ista: Edelsbrunner H, Ölsböck K. 2019. Holes and dependences in an ordered complex.
Computer Aided Geometric Design. 73, 1–15.
mla: Edelsbrunner, Herbert, and Katharina Ölsböck. “Holes and Dependences in an
Ordered Complex.” Computer Aided Geometric Design, vol. 73, Elsevier, 2019,
pp. 1–15, doi:10.1016/j.cagd.2019.06.003.
short: H. Edelsbrunner, K. Ölsböck, Computer Aided Geometric Design 73 (2019) 1–15.
date_created: 2019-07-07T21:59:20Z
date_published: 2019-08-01T00:00:00Z
date_updated: 2023-09-07T13:15:29Z
day: '01'
ddc:
- '000'
department:
- _id: HeEd
doi: 10.1016/j.cagd.2019.06.003
ec_funded: 1
external_id:
isi:
- '000485207800001'
file:
- access_level: open_access
checksum: 7c99be505dc7533257d42eb1830cef04
content_type: application/pdf
creator: kschuh
date_created: 2019-07-08T15:24:26Z
date_updated: 2020-07-14T12:47:34Z
file_id: '6624'
file_name: Elsevier_2019_Edelsbrunner.pdf
file_size: 2665013
relation: main_file
file_date_updated: 2020-07-14T12:47:34Z
has_accepted_license: '1'
intvolume: ' 73'
isi: 1
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
page: 1-15
project:
- _id: 266A2E9E-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '788183'
name: Alpha Shape Theory Extended
- _id: 2561EBF4-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: I02979-N35
name: Persistence and stability of geometric complexes
publication: Computer Aided Geometric Design
publication_status: published
publisher: Elsevier
quality_controlled: '1'
related_material:
record:
- id: '7460'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: Holes and dependences in an ordered complex
tmp:
image: /images/cc_by_nc_nd.png
legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
(CC BY-NC-ND 4.0)
short: CC BY-NC-ND (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 73
year: '2019'
...
---
_id: '6609'
abstract:
- lang: eng
text: Mechanical systems facilitate the development of a hybrid quantum technology
comprising electrical, optical, atomic and acoustic degrees of freedom1, and entanglement
is essential to realize quantum-enabled devices. Continuous-variable entangled
fields—known as Einstein–Podolsky–Rosen (EPR) states—are spatially separated two-mode
squeezed states that can be used for quantum teleportation and quantum communication2.
In the optical domain, EPR states are typically generated using nondegenerate
optical amplifiers3, and at microwave frequencies Josephson circuits can serve
as a nonlinear medium4,5,6. An outstanding goal is to deterministically generate
and distribute entangled states with a mechanical oscillator, which requires a
carefully arranged balance between excitation, cooling and dissipation in an ultralow
noise environment. Here we observe stationary emission of path-entangled microwave
radiation from a parametrically driven 30-micrometre-long silicon nanostring oscillator,
squeezing the joint field operators of two thermal modes by 3.40 decibels below
the vacuum level. The motion of this micromechanical system correlates up to 50
photons per second per hertz, giving rise to a quantum discord that is robust
with respect to microwave noise7. Such generalized quantum correlations of separable
states are important for quantum-enhanced detection8 and provide direct evidence
of the non-classical nature of the mechanical oscillator without directly measuring
its state9. This noninvasive measurement scheme allows to infer information about
otherwise inaccessible objects, with potential implications for sensing, open-system
dynamics and fundamental tests of quantum gravity. In the future, similar on-chip
devices could be used to entangle subsystems on very different energy scales,
such as microwave and optical photons.
acknowledged_ssus:
- _id: NanoFab
article_processing_charge: No
arxiv: 1
author:
- first_name: Shabir
full_name: Barzanjeh, Shabir
id: 2D25E1F6-F248-11E8-B48F-1D18A9856A87
last_name: Barzanjeh
orcid: 0000-0003-0415-1423
- first_name: Elena
full_name: Redchenko, Elena
id: 2C21D6E8-F248-11E8-B48F-1D18A9856A87
last_name: Redchenko
- first_name: Matilda
full_name: Peruzzo, Matilda
id: 3F920B30-F248-11E8-B48F-1D18A9856A87
last_name: Peruzzo
orcid: 0000-0002-3415-4628
- first_name: Matthias
full_name: Wulf, Matthias
id: 45598606-F248-11E8-B48F-1D18A9856A87
last_name: Wulf
orcid: 0000-0001-6613-1378
- first_name: Dylan
full_name: Lewis, Dylan
last_name: Lewis
- first_name: Georg M
full_name: Arnold, Georg M
id: 3770C838-F248-11E8-B48F-1D18A9856A87
last_name: Arnold
orcid: 0000-0003-1397-7876
- first_name: Johannes M
full_name: Fink, Johannes M
id: 4B591CBA-F248-11E8-B48F-1D18A9856A87
last_name: Fink
orcid: 0000-0001-8112-028X
citation:
ama: Barzanjeh S, Redchenko E, Peruzzo M, et al. Stationary entangled radiation
from micromechanical motion. Nature. 2019;570:480-483. doi:10.1038/s41586-019-1320-2
apa: Barzanjeh, S., Redchenko, E., Peruzzo, M., Wulf, M., Lewis, D., Arnold, G.
M., & Fink, J. M. (2019). Stationary entangled radiation from micromechanical
motion. Nature. Nature Publishing Group. https://doi.org/10.1038/s41586-019-1320-2
chicago: Barzanjeh, Shabir, Elena Redchenko, Matilda Peruzzo, Matthias Wulf, Dylan
Lewis, Georg M Arnold, and Johannes M Fink. “Stationary Entangled Radiation from
Micromechanical Motion.” Nature. Nature Publishing Group, 2019. https://doi.org/10.1038/s41586-019-1320-2.
ieee: S. Barzanjeh et al., “Stationary entangled radiation from micromechanical
motion,” Nature, vol. 570. Nature Publishing Group, pp. 480–483, 2019.
ista: Barzanjeh S, Redchenko E, Peruzzo M, Wulf M, Lewis D, Arnold GM, Fink JM.
2019. Stationary entangled radiation from micromechanical motion. Nature. 570,
480–483.
mla: Barzanjeh, Shabir, et al. “Stationary Entangled Radiation from Micromechanical
Motion.” Nature, vol. 570, Nature Publishing Group, 2019, pp. 480–83, doi:10.1038/s41586-019-1320-2.
short: S. Barzanjeh, E. Redchenko, M. Peruzzo, M. Wulf, D. Lewis, G.M. Arnold, J.M.
Fink, Nature 570 (2019) 480–483.
date_created: 2019-07-07T21:59:20Z
date_published: 2019-06-27T00:00:00Z
date_updated: 2024-08-07T07:11:54Z
day: '27'
department:
- _id: JoFi
doi: 10.1038/s41586-019-1320-2
ec_funded: 1
external_id:
arxiv:
- '1809.05865'
isi:
- '000472860000042'
intvolume: ' 570'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1809.05865
month: '06'
oa: 1
oa_version: Preprint
page: 480-483
project:
- _id: 257EB838-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '732894'
name: Hybrid Optomechanical Technologies
- _id: 26336814-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '758053'
name: A Fiber Optic Transceiver for Superconducting Qubits
- _id: 258047B6-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '707438'
name: 'Microwave-to-Optical Quantum Link: Quantum Teleportation and Quantum Illumination
with cavity Optomechanics'
- _id: 2671EB66-B435-11E9-9278-68D0E5697425
name: Coherent on-chip conversion of superconducting qubit signals from microwaves
to optical frequencies
publication: Nature
publication_status: published
publisher: Nature Publishing Group
quality_controlled: '1'
scopus_import: '1'
status: public
title: Stationary entangled radiation from micromechanical motion
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 570
year: '2019'
...
---
_id: '151'
abstract:
- lang: eng
text: We construct planar bi-Sobolev mappings whose local volume distortion is bounded
from below by a given function f∈Lp with p>1. More precisely, for any 1<q<(p+1)/2
we construct W1,q-bi-Sobolev maps with identity boundary conditions; for f∈L∞,
we provide bi-Lipschitz maps. The basic building block of our construction are
bi-Lipschitz maps which stretch a given compact subset of the unit square by a
given factor while preserving the boundary. The construction of these stretching
maps relies on a slight strengthening of the celebrated covering result of Alberti,
Csörnyei, and Preiss for measurable planar sets in the case of compact sets. We
apply our result to a model functional in nonlinear elasticity, the integrand
of which features fast blowup as the Jacobian determinant of the deformation becomes
small. For such functionals, the derivation of the equilibrium equations for minimizers
requires an additional regularization of test functions, which our maps provide.
article_processing_charge: No
arxiv: 1
author:
- first_name: Julian L
full_name: Fischer, Julian L
id: 2C12A0B0-F248-11E8-B48F-1D18A9856A87
last_name: Fischer
orcid: 0000-0002-0479-558X
- first_name: Olivier
full_name: Kneuss, Olivier
last_name: Kneuss
citation:
ama: Fischer JL, Kneuss O. Bi-Sobolev solutions to the prescribed Jacobian inequality
in the plane with L p data and applications to nonlinear elasticity. Journal
of Differential Equations. 2019;266(1):257-311. doi:10.1016/j.jde.2018.07.045
apa: Fischer, J. L., & Kneuss, O. (2019). Bi-Sobolev solutions to the prescribed
Jacobian inequality in the plane with L p data and applications to nonlinear elasticity.
Journal of Differential Equations. Elsevier. https://doi.org/10.1016/j.jde.2018.07.045
chicago: Fischer, Julian L, and Olivier Kneuss. “Bi-Sobolev Solutions to the Prescribed
Jacobian Inequality in the Plane with L p Data and Applications to Nonlinear Elasticity.”
Journal of Differential Equations. Elsevier, 2019. https://doi.org/10.1016/j.jde.2018.07.045.
ieee: J. L. Fischer and O. Kneuss, “Bi-Sobolev solutions to the prescribed Jacobian
inequality in the plane with L p data and applications to nonlinear elasticity,”
Journal of Differential Equations, vol. 266, no. 1. Elsevier, pp. 257–311,
2019.
ista: Fischer JL, Kneuss O. 2019. Bi-Sobolev solutions to the prescribed Jacobian
inequality in the plane with L p data and applications to nonlinear elasticity.
Journal of Differential Equations. 266(1), 257–311.
mla: Fischer, Julian L., and Olivier Kneuss. “Bi-Sobolev Solutions to the Prescribed
Jacobian Inequality in the Plane with L p Data and Applications to Nonlinear Elasticity.”
Journal of Differential Equations, vol. 266, no. 1, Elsevier, 2019, pp.
257–311, doi:10.1016/j.jde.2018.07.045.
short: J.L. Fischer, O. Kneuss, Journal of Differential Equations 266 (2019) 257–311.
date_created: 2018-12-11T11:44:54Z
date_published: 2019-01-05T00:00:00Z
date_updated: 2023-09-08T13:25:35Z
day: '05'
department:
- _id: JuFi
doi: 10.1016/j.jde.2018.07.045
external_id:
arxiv:
- '1408.1587'
isi:
- '000449108500010'
intvolume: ' 266'
isi: 1
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1408.1587
month: '01'
oa: 1
oa_version: Preprint
page: 257 - 311
publication: Journal of Differential Equations
publication_status: published
publisher: Elsevier
publist_id: '7770'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Bi-Sobolev solutions to the prescribed Jacobian inequality in the plane with
L p data and applications to nonlinear elasticity
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 266
year: '2019'
...
---
_id: '13067'
abstract:
- lang: eng
text: Genetic incompatibilities contribute to reproductive isolation between many
diverging populations, but it is still unclear to what extent they play a role
if divergence happens with gene flow. In contact zones between the "Crab" and
"Wave" ecotypes of the snail Littorina saxatilis divergent selection forms strong
barriers to gene flow, while the role of postzygotic barriers due to selection
against hybrids remains unclear. High embryo abortion rates in this species could
indicate the presence of such barriers. Postzygotic barriers might include genetic
incompatibilities (e.g. Dobzhansky-Muller incompatibilities) but also maladaptation,
both expected to be most pronounced in contact zones. In addition, embryo abortion
might reflect physiological stress on females and embryos independent of any genetic
stress. We examined all embryos of >500 females sampled outside and inside
contact zones of three populations in Sweden. Females' clutch size ranged from
0 to 1011 embryos (mean 130±123) and abortion rates varied between 0 and100% (mean
12%). We described female genotypes by using a hybrid index based on hundreds
of SNPs differentiated between ecotypes with which we characterised female genotypes.
We also calculated female SNP heterozygosity and inversion karyotype. Clutch size
did not vary with female hybrid index and abortion rates were only weakly related
to hybrid index in two sites but not at all in a third site. No additional variation
in abortion rate was explained by female SNP heterozygosity, but increased female
inversion heterozygosity added slightly to increased abortion. Our results show
only weak and probably biologically insignificant postzygotic barriers contributing
to ecotype divergence and the high and variable abortion rates were marginally,
if at all, explained by hybrid index of females.
article_processing_charge: No
author:
- first_name: Kerstin
full_name: Johannesson, Kerstin
last_name: Johannesson
- first_name: Zuzanna
full_name: Zagrodzka, Zuzanna
last_name: Zagrodzka
- first_name: Rui
full_name: Faria, Rui
last_name: Faria
- first_name: Anja M
full_name: Westram, Anja M
id: 3C147470-F248-11E8-B48F-1D18A9856A87
last_name: Westram
orcid: 0000-0003-1050-4969
- first_name: Roger
full_name: Butlin, Roger
last_name: Butlin
citation:
ama: 'Johannesson K, Zagrodzka Z, Faria R, Westram AM, Butlin R. Data from: Is embryo
abortion a postzygotic barrier to gene flow between Littorina ecotypes? 2019.
doi:10.5061/DRYAD.TB2RBNZWK'
apa: 'Johannesson, K., Zagrodzka, Z., Faria, R., Westram, A. M., & Butlin, R.
(2019). Data from: Is embryo abortion a postzygotic barrier to gene flow between
Littorina ecotypes? Dryad. https://doi.org/10.5061/DRYAD.TB2RBNZWK'
chicago: 'Johannesson, Kerstin, Zuzanna Zagrodzka, Rui Faria, Anja M Westram, and
Roger Butlin. “Data from: Is Embryo Abortion a Postzygotic Barrier to Gene Flow
between Littorina Ecotypes?” Dryad, 2019. https://doi.org/10.5061/DRYAD.TB2RBNZWK.'
ieee: 'K. Johannesson, Z. Zagrodzka, R. Faria, A. M. Westram, and R. Butlin, “Data
from: Is embryo abortion a postzygotic barrier to gene flow between Littorina
ecotypes?” Dryad, 2019.'
ista: 'Johannesson K, Zagrodzka Z, Faria R, Westram AM, Butlin R. 2019. Data from:
Is embryo abortion a postzygotic barrier to gene flow between Littorina ecotypes?,
Dryad, 10.5061/DRYAD.TB2RBNZWK.'
mla: 'Johannesson, Kerstin, et al. Data from: Is Embryo Abortion a Postzygotic
Barrier to Gene Flow between Littorina Ecotypes? Dryad, 2019, doi:10.5061/DRYAD.TB2RBNZWK.'
short: K. Johannesson, Z. Zagrodzka, R. Faria, A.M. Westram, R. Butlin, (2019).
date_created: 2023-05-23T16:36:27Z
date_published: 2019-12-02T00:00:00Z
date_updated: 2023-09-06T14:48:57Z
day: '02'
ddc:
- '570'
department:
- _id: NiBa
doi: 10.5061/DRYAD.TB2RBNZWK
license: https://creativecommons.org/publicdomain/zero/1.0/
main_file_link:
- open_access: '1'
url: https://doi.org/10.5061/dryad.tb2rbnzwk
month: '12'
oa: 1
oa_version: Published Version
publisher: Dryad
related_material:
record:
- id: '7205'
relation: used_in_publication
status: public
status: public
title: 'Data from: Is embryo abortion a postzygotic barrier to gene flow between Littorina
ecotypes?'
tmp:
image: /images/cc_0.png
legal_code_url: https://creativecommons.org/publicdomain/zero/1.0/legalcode
name: Creative Commons Public Domain Dedication (CC0 1.0)
short: CC0 (1.0)
type: research_data_reference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2019'
...
---
_id: '13079'
abstract:
- lang: eng
text: The inner nuclear membrane (INM) is a subdomain of the endoplasmic reticulum
(ER) that is gated by the nuclear pore complex. It is unknown whether proteins
of the INM and ER are degraded through shared or distinct pathways in mammalian
cells. We applied dynamic proteomics to profile protein half-lives and report
that INM and ER residents turn over at similar rates, indicating that the INM’s
unique topology is not a barrier to turnover. Using a microscopy approach, we
observed that the proteasome can degrade INM proteins in situ. However, we also
uncovered evidence for selective, vesicular transport-mediated turnover of a single
INM protein, emerin, that is potentiated by ER stress. Emerin is rapidly cleared
from the INM by a mechanism that requires emerin’s LEM domain to mediate vesicular
trafficking to lysosomes. This work demonstrates that the INM can be dynamically
remodeled in response to environmental inputs.
article_processing_charge: No
author:
- first_name: Abigail
full_name: Buchwalter, Abigail
last_name: Buchwalter
- first_name: Roberta
full_name: Schulte, Roberta
last_name: Schulte
- first_name: Hsiao
full_name: Tsai, Hsiao
last_name: Tsai
- first_name: Juliana
full_name: Capitanio, Juliana
last_name: Capitanio
- 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: 'Buchwalter A, Schulte R, Tsai H, Capitanio J, Hetzer M. Data from: Selective
clearance of the inner nuclear membrane protein emerin by vesicular transport
during ER stress. 2019. doi:10.5061/DRYAD.N0R525H'
apa: 'Buchwalter, A., Schulte, R., Tsai, H., Capitanio, J., & Hetzer, M. (2019).
Data from: Selective clearance of the inner nuclear membrane protein emerin by
vesicular transport during ER stress. Dryad. https://doi.org/10.5061/DRYAD.N0R525H'
chicago: 'Buchwalter, Abigail, Roberta Schulte, Hsiao Tsai, Juliana Capitanio, and
Martin Hetzer. “Data from: Selective Clearance of the Inner Nuclear Membrane Protein
Emerin by Vesicular Transport during ER Stress.” Dryad, 2019. https://doi.org/10.5061/DRYAD.N0R525H.'
ieee: 'A. Buchwalter, R. Schulte, H. Tsai, J. Capitanio, and M. Hetzer, “Data from:
Selective clearance of the inner nuclear membrane protein emerin by vesicular
transport during ER stress.” Dryad, 2019.'
ista: 'Buchwalter A, Schulte R, Tsai H, Capitanio J, Hetzer M. 2019. Data from:
Selective clearance of the inner nuclear membrane protein emerin by vesicular
transport during ER stress, Dryad, 10.5061/DRYAD.N0R525H.'
mla: 'Buchwalter, Abigail, et al. Data from: Selective Clearance of the Inner
Nuclear Membrane Protein Emerin by Vesicular Transport during ER Stress. Dryad,
2019, doi:10.5061/DRYAD.N0R525H.'
short: A. Buchwalter, R. Schulte, H. Tsai, J. Capitanio, M. Hetzer, (2019).
date_created: 2023-05-23T17:09:30Z
date_published: 2019-10-28T00:00:00Z
date_updated: 2023-05-31T06:36:23Z
day: '28'
ddc:
- '570'
doi: 10.5061/DRYAD.N0R525H
extern: '1'
main_file_link:
- open_access: '1'
url: https://doi.org/10.5061/dryad.n0r525h
month: '10'
oa: 1
oa_version: Published Version
publisher: Dryad
related_material:
record:
- id: '11060'
relation: used_in_publication
status: public
status: public
title: 'Data from: Selective clearance of the inner nuclear membrane protein emerin
by vesicular transport during ER stress'
tmp:
image: /images/cc_0.png
legal_code_url: https://creativecommons.org/publicdomain/zero/1.0/legalcode
name: Creative Commons Public Domain Dedication (CC0 1.0)
short: CC0 (1.0)
type: research_data_reference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2019'
...
---
_id: '13366'
abstract:
- lang: eng
text: The ability to reversibly assemble nanoparticles using light is both fundamentally
interesting and important for applications ranging from reversible data storage
to controlled drug delivery. Here, the diverse approaches that have so far been
developed to control the self-assembly of nanoparticles using light are reviewed
and compared. These approaches include functionalizing nanoparticles with monolayers
of photoresponsive molecules, placing them in photoresponsive media capable of
reversibly protonating the particles under light, and decorating plasmonic nanoparticles
with thermoresponsive polymers, to name just a few. The applicability of these
methods to larger, micrometer-sized particles is also discussed. Finally, several
perspectives on further developments in the field are offered.
article_number: '1905866'
article_processing_charge: No
article_type: original
author:
- first_name: Tong
full_name: Bian, Tong
last_name: Bian
- first_name: Zonglin
full_name: Chu, Zonglin
last_name: Chu
- first_name: Rafal
full_name: Klajn, Rafal
id: 8e84690e-1e48-11ed-a02b-a1e6fb8bb53b
last_name: Klajn
citation:
ama: Bian T, Chu Z, Klajn R. The many ways to assemble nanoparticles using light.
Advanced Materials. 2019;32(20). doi:10.1002/adma.201905866
apa: Bian, T., Chu, Z., & Klajn, R. (2019). The many ways to assemble nanoparticles
using light. Advanced Materials. Wiley. https://doi.org/10.1002/adma.201905866
chicago: Bian, Tong, Zonglin Chu, and Rafal Klajn. “The Many Ways to Assemble Nanoparticles
Using Light.” Advanced Materials. Wiley, 2019. https://doi.org/10.1002/adma.201905866.
ieee: T. Bian, Z. Chu, and R. Klajn, “The many ways to assemble nanoparticles using
light,” Advanced Materials, vol. 32, no. 20. Wiley, 2019.
ista: Bian T, Chu Z, Klajn R. 2019. The many ways to assemble nanoparticles using
light. Advanced Materials. 32(20), 1905866.
mla: Bian, Tong, et al. “The Many Ways to Assemble Nanoparticles Using Light.” Advanced
Materials, vol. 32, no. 20, 1905866, Wiley, 2019, doi:10.1002/adma.201905866.
short: T. Bian, Z. Chu, R. Klajn, Advanced Materials 32 (2019).
date_created: 2023-08-01T09:37:26Z
date_published: 2019-11-19T00:00:00Z
date_updated: 2023-08-07T10:23:41Z
day: '19'
doi: 10.1002/adma.201905866
extern: '1'
external_id:
pmid:
- '31709655'
intvolume: ' 32'
issue: '20'
keyword:
- Mechanical Engineering
- Mechanics of Materials
- General Materials Science
language:
- iso: eng
month: '11'
oa_version: None
pmid: 1
publication: Advanced Materials
publication_identifier:
eissn:
- 1521-4095
issn:
- 0935-9648
publication_status: published
publisher: Wiley
quality_controlled: '1'
scopus_import: '1'
status: public
title: The many ways to assemble nanoparticles using light
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 32
year: '2019'
...
---
_id: '13369'
abstract:
- lang: eng
text: Arylazopyrazoles represent a new family of molecular photoswitches characterized
by a near-quantitative conversion between two states and long thermal half-lives
of the metastable state. Here, we investigated the behavior of a model arylazopyrazole
in the presence of a self-assembled cage based on Pd–imidazole coordination. Owing
to its high water solubility, the cage can solubilize the E isomer of arylazopyrazole,
which, by itself, is not soluble in water. NMR spectroscopy and X-ray crystallography
have independently demonstrated that each cage can encapsulate two molecules of
E-arylazopyrazole. UV-induced switching to the Z isomer was accompanied by the
release of one of the two guests from the cage and the formation of a 1:1 cage/Z-arylazopyrazole
inclusion complex. DFT calculations suggest that this process involves a dramatic
change in the conformation of the cage. Back-isomerization was induced with green
light and resulted in the initial 1:2 cage/E-arylazopyrazole complex. This back-isomerization
reaction also proceeded in the dark, with a rate significantly higher than in
the absence of the cage.
article_processing_charge: No
article_type: original
author:
- first_name: Anton I
full_name: Hanopolskyi, Anton I
last_name: Hanopolskyi
- first_name: Soumen
full_name: De, Soumen
last_name: De
- first_name: Michał J
full_name: Białek, Michał J
last_name: Białek
- first_name: Yael
full_name: Diskin-Posner, Yael
last_name: Diskin-Posner
- first_name: Liat
full_name: Avram, Liat
last_name: Avram
- first_name: Moran
full_name: Feller, Moran
last_name: Feller
- first_name: Rafal
full_name: Klajn, Rafal
id: 8e84690e-1e48-11ed-a02b-a1e6fb8bb53b
last_name: Klajn
citation:
ama: Hanopolskyi AI, De S, Białek MJ, et al. Reversible switching of arylazopyrazole
within a metal–organic cage. Beilstein Journal of Organic Chemistry. 2019;15:2398-2407.
doi:10.3762/bjoc.15.232
apa: Hanopolskyi, A. I., De, S., Białek, M. J., Diskin-Posner, Y., Avram, L., Feller,
M., & Klajn, R. (2019). Reversible switching of arylazopyrazole within a metal–organic
cage. Beilstein Journal of Organic Chemistry. Beilstein Institut. https://doi.org/10.3762/bjoc.15.232
chicago: Hanopolskyi, Anton I, Soumen De, Michał J Białek, Yael Diskin-Posner, Liat
Avram, Moran Feller, and Rafal Klajn. “Reversible Switching of Arylazopyrazole
within a Metal–Organic Cage.” Beilstein Journal of Organic Chemistry. Beilstein
Institut, 2019. https://doi.org/10.3762/bjoc.15.232.
ieee: A. I. Hanopolskyi et al., “Reversible switching of arylazopyrazole
within a metal–organic cage,” Beilstein Journal of Organic Chemistry, vol.
15. Beilstein Institut, pp. 2398–2407, 2019.
ista: Hanopolskyi AI, De S, Białek MJ, Diskin-Posner Y, Avram L, Feller M, Klajn
R. 2019. Reversible switching of arylazopyrazole within a metal–organic cage.
Beilstein Journal of Organic Chemistry. 15, 2398–2407.
mla: Hanopolskyi, Anton I., et al. “Reversible Switching of Arylazopyrazole within
a Metal–Organic Cage.” Beilstein Journal of Organic Chemistry, vol. 15,
Beilstein Institut, 2019, pp. 2398–407, doi:10.3762/bjoc.15.232.
short: A.I. Hanopolskyi, S. De, M.J. Białek, Y. Diskin-Posner, L. Avram, M. Feller,
R. Klajn, Beilstein Journal of Organic Chemistry 15 (2019) 2398–2407.
date_created: 2023-08-01T09:38:06Z
date_published: 2019-10-10T00:00:00Z
date_updated: 2023-08-07T10:34:56Z
day: '10'
doi: 10.3762/bjoc.15.232
extern: '1'
external_id:
pmid:
- '31666874'
intvolume: ' 15'
keyword:
- Organic Chemistry
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.3762/bjoc.15.232
month: '10'
oa: 1
oa_version: Published Version
page: 2398-2407
pmid: 1
publication: Beilstein Journal of Organic Chemistry
publication_identifier:
eissn:
- 1860-5397
publication_status: published
publisher: Beilstein Institut
quality_controlled: '1'
scopus_import: '1'
status: public
title: Reversible switching of arylazopyrazole within a metal–organic cage
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 15
year: '2019'
...
---
_id: '13370'
abstract:
- lang: eng
text: Efficient isomerization of photochromic molecules often requires conformational
freedom and is typically not available under solvent-free conditions. Here, we
report a general methodology allowing for reversible switching of such molecules
on the surfaces of solid materials. Our method is based on dispersing photochromic
compounds within polysilsesquioxane nanowire networks (PNNs), which can be fabricated
as transparent, highly porous, micrometer-thick layers on various substrates.
We found that azobenzene switching within the PNNs proceeded unusually fast compared
with the same molecules in liquid solvents. Efficient isomerization of another
photochromic system, spiropyran, from a colorless to a colored form was used to
create reversible images in PNN-coated glass. The coloration reaction could be
induced with sunlight and is of interest for developing “smart” windows.
article_processing_charge: No
article_type: original
author:
- first_name: Zonglin
full_name: Chu, Zonglin
last_name: Chu
- first_name: Rafal
full_name: Klajn, Rafal
id: 8e84690e-1e48-11ed-a02b-a1e6fb8bb53b
last_name: Klajn
citation:
ama: Chu Z, Klajn R. Polysilsesquioxane nanowire networks as an “Artificial Solvent”
for reversible operation of photochromic molecules. Nano Letters. 2019;19(10):7106-7111.
doi:10.1021/acs.nanolett.9b02642
apa: Chu, Z., & Klajn, R. (2019). Polysilsesquioxane nanowire networks as an
“Artificial Solvent” for reversible operation of photochromic molecules. Nano
Letters. American Chemical Society. https://doi.org/10.1021/acs.nanolett.9b02642
chicago: Chu, Zonglin, and Rafal Klajn. “Polysilsesquioxane Nanowire Networks as
an ‘Artificial Solvent’ for Reversible Operation of Photochromic Molecules.” Nano
Letters. American Chemical Society, 2019. https://doi.org/10.1021/acs.nanolett.9b02642.
ieee: Z. Chu and R. Klajn, “Polysilsesquioxane nanowire networks as an ‘Artificial
Solvent’ for reversible operation of photochromic molecules,” Nano Letters,
vol. 19, no. 10. American Chemical Society, pp. 7106–7111, 2019.
ista: Chu Z, Klajn R. 2019. Polysilsesquioxane nanowire networks as an “Artificial
Solvent” for reversible operation of photochromic molecules. Nano Letters. 19(10),
7106–7111.
mla: Chu, Zonglin, and Rafal Klajn. “Polysilsesquioxane Nanowire Networks as an
‘Artificial Solvent’ for Reversible Operation of Photochromic Molecules.” Nano
Letters, vol. 19, no. 10, American Chemical Society, 2019, pp. 7106–11, doi:10.1021/acs.nanolett.9b02642.
short: Z. Chu, R. Klajn, Nano Letters 19 (2019) 7106–7111.
date_created: 2023-08-01T09:38:23Z
date_published: 2019-09-20T00:00:00Z
date_updated: 2023-08-07T10:39:34Z
day: '20'
doi: 10.1021/acs.nanolett.9b02642
extern: '1'
external_id:
pmid:
- '31539469'
intvolume: ' 19'
issue: '10'
keyword:
- Mechanical Engineering
- Condensed Matter Physics
- General Materials Science
- General Chemistry
- Bioengineering
language:
- iso: eng
month: '09'
oa_version: None
page: 7106-7111
pmid: 1
publication: Nano Letters
publication_identifier:
eissn:
- 1530-6992
issn:
- 1530-6984
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Polysilsesquioxane nanowire networks as an “Artificial Solvent” for reversible
operation of photochromic molecules
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 19
year: '2019'
...
---
_id: '13371'
abstract:
- lang: eng
text: Diamondoid nanoporous crystals represent a synthetically challenging class
of materials that typically have been obtained from tetrahedral building blocks.
In this issue of Chem, Stoddart and coworkers demonstrate that it is possible
to generate diamondoid frameworks from a hexacationic building block lacking a
tetrahedral symmetry. These results highlight the great potential of self-assembly
for rapidly transforming small molecules into structurally complex functional
materials.
article_processing_charge: No
article_type: original
author:
- first_name: Michał J.
full_name: Białek, Michał J.
last_name: Białek
- first_name: Rafal
full_name: Klajn, Rafal
id: 8e84690e-1e48-11ed-a02b-a1e6fb8bb53b
last_name: Klajn
citation:
ama: Białek MJ, Klajn R. Diamond grows up. Chem. 2019;5(9):2283-2285. doi:10.1016/j.chempr.2019.08.012
apa: Białek, M. J., & Klajn, R. (2019). Diamond grows up. Chem. Elsevier.
https://doi.org/10.1016/j.chempr.2019.08.012
chicago: Białek, Michał J., and Rafal Klajn. “Diamond Grows Up.” Chem. Elsevier,
2019. https://doi.org/10.1016/j.chempr.2019.08.012.
ieee: M. J. Białek and R. Klajn, “Diamond grows up,” Chem, vol. 5, no. 9.
Elsevier, pp. 2283–2285, 2019.
ista: Białek MJ, Klajn R. 2019. Diamond grows up. Chem. 5(9), 2283–2285.
mla: Białek, Michał J., and Rafal Klajn. “Diamond Grows Up.” Chem, vol. 5,
no. 9, Elsevier, 2019, pp. 2283–85, doi:10.1016/j.chempr.2019.08.012.
short: M.J. Białek, R. Klajn, Chem 5 (2019) 2283–2285.
date_created: 2023-08-01T09:38:38Z
date_published: 2019-09-12T00:00:00Z
date_updated: 2023-08-07T10:46:50Z
day: '12'
doi: 10.1016/j.chempr.2019.08.012
extern: '1'
intvolume: ' 5'
issue: '9'
keyword:
- Materials Chemistry
- Biochemistry (medical)
- General Chemical Engineering
- Environmental Chemistry
- Biochemistry
- General Chemistry
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1016/j.chempr.2019.08.012
month: '09'
oa: 1
oa_version: Published Version
page: 2283-2285
publication: Chem
publication_identifier:
eissn:
- 2451-9294
issn:
- 2451-9308
publication_status: published
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: Diamond grows up
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 5
year: '2019'
...
---
_id: '13372'
abstract:
- lang: eng
text: 'The capacity to respond or adapt to environmental changes is an intrinsic
property of living systems that comprise highly-connected subcomponents communicating
through chemical networks. The development of responsive synthetic systems is
a relatively new research area that covers different disciplines, among which
nanochemistry brings conceptually new demonstrations. Especially attractive are
ligand-protected gold nanoparticles, which have been extensively used over the
last decade as building blocks in constructing superlattices or dynamic aggregates,
under the effect of an applied stimulus. To reflect the importance of surface
chemistry and nanoparticle core composition in the dynamic self-assembly of nanoparticles,
we provide here an overview of various available stimuli, as tools for synthetic
chemists to exploit. Along with this task, the review starts with the use of chemical
stimuli such as solvent, pH, gases, metal ions or biomolecules. It then focuses
on physical stimuli: temperature, magnetic and electric fields, as well as light.
To reflect on the increasing complexity of current architectures, we discuss systems
that are responsive to more than one stimulus, to finally encourage further research
by proposing future challenges.'
article_processing_charge: No
article_type: original
author:
- first_name: Marek
full_name: Grzelczak, Marek
last_name: Grzelczak
- first_name: Luis M.
full_name: Liz-Marzán, Luis M.
last_name: Liz-Marzán
- first_name: Rafal
full_name: Klajn, Rafal
id: 8e84690e-1e48-11ed-a02b-a1e6fb8bb53b
last_name: Klajn
citation:
ama: Grzelczak M, Liz-Marzán LM, Klajn R. Stimuli-responsive self-assembly of nanoparticles.
Chemical Society Reviews. 2019;48(5):1342-1361. doi:10.1039/c8cs00787j
apa: Grzelczak, M., Liz-Marzán, L. M., & Klajn, R. (2019). Stimuli-responsive
self-assembly of nanoparticles. Chemical Society Reviews. Royal Society
of Chemistry. https://doi.org/10.1039/c8cs00787j
chicago: Grzelczak, Marek, Luis M. Liz-Marzán, and Rafal Klajn. “Stimuli-Responsive
Self-Assembly of Nanoparticles.” Chemical Society Reviews. Royal Society
of Chemistry, 2019. https://doi.org/10.1039/c8cs00787j.
ieee: M. Grzelczak, L. M. Liz-Marzán, and R. Klajn, “Stimuli-responsive self-assembly
of nanoparticles,” Chemical Society Reviews, vol. 48, no. 5. Royal Society
of Chemistry, pp. 1342–1361, 2019.
ista: Grzelczak M, Liz-Marzán LM, Klajn R. 2019. Stimuli-responsive self-assembly
of nanoparticles. Chemical Society Reviews. 48(5), 1342–1361.
mla: Grzelczak, Marek, et al. “Stimuli-Responsive Self-Assembly of Nanoparticles.”
Chemical Society Reviews, vol. 48, no. 5, Royal Society of Chemistry, 2019,
pp. 1342–61, doi:10.1039/c8cs00787j.
short: M. Grzelczak, L.M. Liz-Marzán, R. Klajn, Chemical Society Reviews 48 (2019)
1342–1361.
date_created: 2023-08-01T09:38:52Z
date_published: 2019-01-28T00:00:00Z
date_updated: 2023-08-07T10:48:31Z
day: '28'
doi: 10.1039/c8cs00787j
extern: '1'
external_id:
pmid:
- '30688963'
intvolume: ' 48'
issue: '5'
keyword:
- General Chemistry
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1039/C8CS00787J
month: '01'
oa: 1
oa_version: Published Version
page: 1342-1361
pmid: 1
publication: Chemical Society Reviews
publication_identifier:
eissn:
- 1460-4744
issn:
- 0306-0012
publication_status: published
publisher: Royal Society of Chemistry
quality_controlled: '1'
scopus_import: '1'
status: public
title: Stimuli-responsive self-assembly of nanoparticles
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 48
year: '2019'
...
---
_id: '13373'
abstract:
- lang: eng
text: The reversible photoisomerization of azobenzene has been utilized to construct
a plethora of systems in which optical, electronic, catalytic, and other properties
can be controlled by light. However, owing to azobenzene’s hydrophobic nature,
most of these examples have been realized only in organic solvents, and systems
operating in water are relatively scarce. Here, we show that by coadsorbing the
inherently hydrophobic azobenzenes with water-solubilizing ligands on the same
nanoparticulate platforms, it is possible to render them essentially water-soluble.
To this end, we developed a modified nanoparticle functionalization procedure
allowing us to precisely fine-tune the amount of azobenzene on the functionalized
nanoparticles. Molecular dynamics simulations helped us to identify two distinct
supramolecular architectures (depending on the length of the background ligand)
on these nanoparticles, which can explain their excellent aqueous solubilities.
Azobenzenes adsorbed on these water-soluble nanoparticles exhibit highly reversible
photoisomerization upon exposure to UV and visible light. Importantly, the mixed-monolayer
approach allowed us to systematically investigate how the background ligand affects
the switching properties of azobenzene. We found that the nature of the background
ligand has a profound effect on the kinetics of azobenzene switching. For example,
a hydroxy-terminated background ligand is capable of accelerating the back-isomerization
reaction by more than 6000-fold. These results pave the way toward the development
of novel light-responsive nanomaterials operating in aqueous media and, in the
long run, in biological environments.
article_processing_charge: No
article_type: original
author:
- first_name: Zonglin
full_name: Chu, Zonglin
last_name: Chu
- first_name: Yanxiao
full_name: Han, Yanxiao
last_name: Han
- first_name: Tong
full_name: Bian, Tong
last_name: Bian
- first_name: Soumen
full_name: De, Soumen
last_name: De
- first_name: Petr
full_name: Král, Petr
last_name: Král
- first_name: Rafal
full_name: Klajn, Rafal
id: 8e84690e-1e48-11ed-a02b-a1e6fb8bb53b
last_name: Klajn
citation:
ama: Chu Z, Han Y, Bian T, De S, Král P, Klajn R. Supramolecular control of azobenzene
switching on nanoparticles. Journal of the American Chemical Society. 2019;141(5):1949-1960.
doi:10.1021/jacs.8b09638
apa: Chu, Z., Han, Y., Bian, T., De, S., Král, P., & Klajn, R. (2019). Supramolecular
control of azobenzene switching on nanoparticles. Journal of the American Chemical
Society. American Chemical Society. https://doi.org/10.1021/jacs.8b09638
chicago: Chu, Zonglin, Yanxiao Han, Tong Bian, Soumen De, Petr Král, and Rafal Klajn.
“Supramolecular Control of Azobenzene Switching on Nanoparticles.” Journal
of the American Chemical Society. American Chemical Society, 2019. https://doi.org/10.1021/jacs.8b09638.
ieee: Z. Chu, Y. Han, T. Bian, S. De, P. Král, and R. Klajn, “Supramolecular control
of azobenzene switching on nanoparticles,” Journal of the American Chemical
Society, vol. 141, no. 5. American Chemical Society, pp. 1949–1960, 2019.
ista: Chu Z, Han Y, Bian T, De S, Král P, Klajn R. 2019. Supramolecular control
of azobenzene switching on nanoparticles. Journal of the American Chemical Society.
141(5), 1949–1960.
mla: Chu, Zonglin, et al. “Supramolecular Control of Azobenzene Switching on Nanoparticles.”
Journal of the American Chemical Society, vol. 141, no. 5, American Chemical
Society, 2019, pp. 1949–60, doi:10.1021/jacs.8b09638.
short: Z. Chu, Y. Han, T. Bian, S. De, P. Král, R. Klajn, Journal of the American
Chemical Society 141 (2019) 1949–1960.
date_created: 2023-08-01T09:39:19Z
date_published: 2019-02-06T00:00:00Z
date_updated: 2023-08-07T10:51:12Z
day: '06'
doi: 10.1021/jacs.8b09638
extern: '1'
external_id:
pmid:
- '30595017'
intvolume: ' 141'
issue: '5'
keyword:
- Colloid and Surface Chemistry
- Biochemistry
- General Chemistry
- Catalysis
language:
- iso: eng
month: '02'
oa_version: Published Version
page: 1949-1960
pmid: 1
publication: Journal of the American Chemical Society
publication_identifier:
eissn:
- 1520-5126
issn:
- 0002-7863
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Supramolecular control of azobenzene switching on nanoparticles
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 141
year: '2019'
...
---
_id: '13468'
abstract:
- lang: eng
text: Hydrogen-rich supernovae, known as Type II (SNe II), are the most common class
of explosions observed following the collapse of the core of massive stars. We
used analytical estimates and population synthesis simulations to assess the fraction
of SNe II progenitors that are expected to have exchanged mass with a companion
prior to explosion. We estimate that 1/3 to 1/2 of SN II progenitors have a history
of mass exchange with a binary companion before exploding. The dominant binary
channels leading to SN II progenitors involve the merger of binary stars. Mergers
are expected to produce a diversity of SN II progenitor characteristics, depending
on the evolutionary timing and properties of the merger. Alternatively, SN II
progenitors from interacting binaries may have accreted mass from their companion,
and subsequently been ejected from the binary system after their companion exploded.
We show that the overall fraction of SN II progenitors that are predicted to have
experienced binary interaction is robust against the main physical uncertainties
in our models. However, the relative importance of different binary evolutionary
channels is affected by changing physical assumptions. We further discuss ways
in which binarity might contribute to the observed diversity of SNe II by considering
potential observational signatures arising from each binary channel. For supernovae
which have a substantial H-rich envelope at explosion (i.e., excluding Type IIb
SNe), a surviving non-compact companion would typically indicate that the supernova
progenitor star was in a wide, non-interacting binary. We argue that a significant
fraction of even Type II-P SNe are expected to have gained mass from a companion
prior to explosion.
article_number: A5
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Emmanouil
full_name: Zapartas, Emmanouil
last_name: Zapartas
- first_name: Selma E.
full_name: de Mink, Selma E.
last_name: de Mink
- first_name: Stephen
full_name: Justham, Stephen
last_name: Justham
- first_name: Nathan
full_name: Smith, Nathan
last_name: Smith
- first_name: Alex
full_name: de Koter, Alex
last_name: de Koter
- first_name: Mathieu
full_name: Renzo, Mathieu
last_name: Renzo
- first_name: Iair
full_name: Arcavi, Iair
last_name: Arcavi
- first_name: Rob
full_name: Farmer, Rob
last_name: Farmer
- first_name: Ylva Louise Linsdotter
full_name: Götberg, Ylva Louise Linsdotter
id: d0648d0c-0f64-11ee-a2e0-dd0faa2e4f7d
last_name: Götberg
orcid: 0000-0002-6960-6911
- first_name: Silvia
full_name: Toonen, Silvia
last_name: Toonen
citation:
ama: 'Zapartas E, de Mink SE, Justham S, et al. The diverse lives of progenitors
of hydrogen-rich core-collapse supernovae: The role of binary interaction. Astronomy
& Astrophysics. 2019;631. doi:10.1051/0004-6361/201935854'
apa: 'Zapartas, E., de Mink, S. E., Justham, S., Smith, N., de Koter, A., Renzo,
M., … Toonen, S. (2019). The diverse lives of progenitors of hydrogen-rich core-collapse
supernovae: The role of binary interaction. Astronomy & Astrophysics.
EDP Sciences. https://doi.org/10.1051/0004-6361/201935854'
chicago: 'Zapartas, Emmanouil, Selma E. de Mink, Stephen Justham, Nathan Smith,
Alex de Koter, Mathieu Renzo, Iair Arcavi, Rob Farmer, Ylva Louise Linsdotter
Götberg, and Silvia Toonen. “The Diverse Lives of Progenitors of Hydrogen-Rich
Core-Collapse Supernovae: The Role of Binary Interaction.” Astronomy &
Astrophysics. EDP Sciences, 2019. https://doi.org/10.1051/0004-6361/201935854.'
ieee: 'E. Zapartas et al., “The diverse lives of progenitors of hydrogen-rich
core-collapse supernovae: The role of binary interaction,” Astronomy &
Astrophysics, vol. 631. EDP Sciences, 2019.'
ista: 'Zapartas E, de Mink SE, Justham S, Smith N, de Koter A, Renzo M, Arcavi I,
Farmer R, Götberg YLL, Toonen S. 2019. The diverse lives of progenitors of hydrogen-rich
core-collapse supernovae: The role of binary interaction. Astronomy & Astrophysics.
631, A5.'
mla: 'Zapartas, Emmanouil, et al. “The Diverse Lives of Progenitors of Hydrogen-Rich
Core-Collapse Supernovae: The Role of Binary Interaction.” Astronomy &
Astrophysics, vol. 631, A5, EDP Sciences, 2019, doi:10.1051/0004-6361/201935854.'
short: E. Zapartas, S.E. de Mink, S. Justham, N. Smith, A. de Koter, M. Renzo, I.
Arcavi, R. Farmer, Y.L.L. Götberg, S. Toonen, Astronomy & Astrophysics 631
(2019).
date_created: 2023-08-03T10:13:52Z
date_published: 2019-11-20T00:00:00Z
date_updated: 2023-08-09T12:36:09Z
day: '20'
doi: 10.1051/0004-6361/201935854
extern: '1'
external_id:
arxiv:
- '1907.06687'
intvolume: ' 631'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1051/0004-6361/201935854
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: 'The diverse lives of progenitors of hydrogen-rich core-collapse supernovae:
The role of binary interaction'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 631
year: '2019'
...
---
_id: '13469'
abstract:
- lang: eng
text: Stars stripped of their envelopes from interaction with a binary companion
emit a significant fraction of their radiation as ionizing photons. They are potentially
important stellar sources of ionizing radiation, however, they are still often
neglected in spectral synthesis simulations or simulations of stellar feedback.
In anticipating the large datasets of galaxy spectra from the upcoming James Webb
Space Telescope, we modeled the radiative contribution from stripped stars by
using detailed evolutionary and spectral models. We estimated their impact on
the integrated spectra and specifically on the emission rates of H I-, He I-,
and He II-ionizing photons from stellar populations. We find that stripped stars
have the largest impact on the ionizing spectrum of a population in which star
formation halted several Myr ago. In such stellar populations, stripped stars
dominate the emission of ionizing photons, mimicking a younger stellar population
in which massive stars are still present. Our models also suggest that stripped
stars have harder ionizing spectra than massive stars. The additional ionizing
radiation, with which stripped stars contribute affects observable properties
that are related to the emission of ionizing photons from stellar populations.
In co-eval stellar populations, the ionizing radiation from stripped stars increases
the ionization parameter and the production efficiency of hydrogen ionizing photons.
They also cause high values for these parameters for about ten times longer than
what is predicted for massive stars. The effect on properties related to non-ionizing
wavelengths is less pronounced, such as on the ultraviolet continuum slope or
stellar contribution to emission lines. However, the hard ionizing radiation from
stripped stars likely introduces a characteristic ionization structure of the
nebula, which leads to the emission of highly ionized elements such as O2+ and
C3+. We, therefore, expect that the presence of stripped stars affects the location
in the BPT diagram and the diagnostic ratio of O III to O II nebular emission
lines. Our models are publicly available through CDS database and on the STARBURST99
website.
article_number: A134
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Ylva Louise Linsdotter
full_name: Götberg, Ylva Louise Linsdotter
id: d0648d0c-0f64-11ee-a2e0-dd0faa2e4f7d
last_name: Götberg
orcid: 0000-0002-6960-6911
- first_name: S. E.
full_name: de Mink, S. E.
last_name: de Mink
- first_name: J. H.
full_name: Groh, J. H.
last_name: Groh
- first_name: C.
full_name: Leitherer, C.
last_name: Leitherer
- first_name: C.
full_name: Norman, C.
last_name: Norman
citation:
ama: Götberg YLL, de Mink SE, Groh JH, Leitherer C, Norman C. The impact of stars
stripped in binaries on the integrated spectra of stellar populations. Astronomy
& Astrophysics. 2019;629. doi:10.1051/0004-6361/201834525
apa: Götberg, Y. L. L., de Mink, S. E., Groh, J. H., Leitherer, C., & Norman,
C. (2019). The impact of stars stripped in binaries on the integrated spectra
of stellar populations. Astronomy & Astrophysics. EDP Sciences. https://doi.org/10.1051/0004-6361/201834525
chicago: Götberg, Ylva Louise Linsdotter, S. E. de Mink, J. H. Groh, C. Leitherer,
and C. Norman. “The Impact of Stars Stripped in Binaries on the Integrated Spectra
of Stellar Populations.” Astronomy & Astrophysics. EDP Sciences, 2019.
https://doi.org/10.1051/0004-6361/201834525.
ieee: Y. L. L. Götberg, S. E. de Mink, J. H. Groh, C. Leitherer, and C. Norman,
“The impact of stars stripped in binaries on the integrated spectra of stellar
populations,” Astronomy & Astrophysics, vol. 629. EDP Sciences, 2019.
ista: Götberg YLL, de Mink SE, Groh JH, Leitherer C, Norman C. 2019. The impact
of stars stripped in binaries on the integrated spectra of stellar populations.
Astronomy & Astrophysics. 629, A134.
mla: Götberg, Ylva Louise Linsdotter, et al. “The Impact of Stars Stripped in Binaries
on the Integrated Spectra of Stellar Populations.” Astronomy & Astrophysics,
vol. 629, A134, EDP Sciences, 2019, doi:10.1051/0004-6361/201834525.
short: Y.L.L. Götberg, S.E. de Mink, J.H. Groh, C. Leitherer, C. Norman, Astronomy
& Astrophysics 629 (2019).
date_created: 2023-08-03T10:14:00Z
date_published: 2019-09-17T00:00:00Z
date_updated: 2023-08-09T12:34:11Z
day: '17'
doi: 10.1051/0004-6361/201834525
extern: '1'
external_id:
arxiv:
- '1908.06102'
intvolume: ' 629'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1051/0004-6361/201834525
month: '09'
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: The impact of stars stripped in binaries on the integrated spectra of stellar
populations
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 629
year: '2019'
...
---
_id: '13470'
abstract:
- lang: eng
text: "Context. Massive Wolf–Rayet (WR) stars dominate the radiative and mechanical
energy budget of galaxies and probe a critical phase in the evolution of massive
stars prior to core collapse. It is not known whether core He-burning WR stars
(classical WR; cWR) form predominantly through wind stripping (w-WR) or binary
stripping (b-WR). Whereas spectroscopy of WR binaries has so-far largely been
avoided because of its complexity, our study focuses on the 44 WR binaries and
binary candidates of the Large Magellanic Cloud (LMC; metallicity Z ≈ 0.5 Z⊙),
which were identified on the basis of radial velocity variations, composite spectra,
or high X-ray luminosities.\r\n\r\nAims. Relying on a diverse spectroscopic database,
we aim to derive the physical and orbital parameters of our targets, confronting
evolution models of evolved massive stars at subsolar metallicity and constraining
the impact of binary interaction in forming these stars.\r\n\r\nMethods. Spectroscopy
was performed using the Potsdam Wolf–Rayet (PoWR) code and cross-correlation techniques.
Disentanglement was performed using the code Spectangular or the shift-and-add
algorithm. Evolutionary status was interpreted using the Binary Population and
Spectral Synthesis (BPASS) code, exploring binary interaction and chemically homogeneous
evolution.\r\n\r\nResults. Among our sample, 28/44 objects show composite spectra
and are analyzed as such. An additional five targets show periodically moving
WR primaries but no detected companions (SB1); two (BAT99 99 and 112) are potential
WR + compact-object candidates owing to their high X-ray luminosities. We cannot
confirm the binary nature of the remaining 11 candidates. About two-thirds of
the WN components in binaries are identified as cWR, and one-third as hydrogen-burning
WR stars. We establish metallicity-dependent mass-loss recipes, which broadly
agree with those recently derived for single WN stars, and in which so-called
WN3/O3 stars are clear outliers. We estimate that 45 ± 30% of the cWR stars
in our sample have interacted with a companion via mass transfer. However, only
≈12 ± 7% of the cWR stars in our sample naively appear to have formed purely
owing to stripping via a companion (12% b-WR). Assuming that apparently single
WR stars truly formed as single stars, this comprises ≈4% of the whole LMC WN
population, which is about ten times less than expected. No obvious differences
in the properties of single and binary WN stars, whose luminosities extend down
to log L ≈ 5.2 [L⊙], are apparent. With the exception of a few systems (BAT99
19, 49, and 103), the equatorial rotational velocities of the OB-type companions
are moderate (veq ≲ 250 km s−1) and challenge standard formalisms of angular-momentum
accretion. For most objects, chemically homogeneous evolution can be rejected
for the secondary, but not for the WR progenitor.\r\n\r\nConclusions. No obvious
dichotomy in the locations of apparently single and binary WN stars on the Hertzsprung-Russell
diagram is apparent. According to commonly used stellar evolution models (BPASS,
Geneva), most apparently single WN stars could not have formed as single stars,
implying that they were stripped by an undetected companion. Otherwise, it must
follow that pre-WR mass-loss/mixing (e.g., during the red supergiant phase) are
strongly underestimated in standard stellar evolution models."
article_number: A151
article_processing_charge: No
article_type: original
author:
- first_name: T.
full_name: Shenar, T.
last_name: Shenar
- first_name: D. P.
full_name: Sablowski, D. P.
last_name: Sablowski
- first_name: R.
full_name: Hainich, R.
last_name: Hainich
- first_name: H.
full_name: Todt, H.
last_name: Todt
- first_name: A. F. J.
full_name: Moffat, A. F. J.
last_name: Moffat
- first_name: L. M.
full_name: Oskinova, L. M.
last_name: Oskinova
- first_name: V.
full_name: Ramachandran, V.
last_name: Ramachandran
- first_name: H.
full_name: Sana, H.
last_name: Sana
- first_name: A. A. C.
full_name: Sander, A. A. C.
last_name: Sander
- first_name: O.
full_name: Schnurr, O.
last_name: Schnurr
- first_name: N.
full_name: St-Louis, N.
last_name: St-Louis
- first_name: D.
full_name: Vanbeveren, D.
last_name: Vanbeveren
- first_name: Ylva Louise Linsdotter
full_name: Götberg, Ylva Louise Linsdotter
id: d0648d0c-0f64-11ee-a2e0-dd0faa2e4f7d
last_name: Götberg
orcid: 0000-0002-6960-6911
- first_name: W.-R.
full_name: Hamann, W.-R.
last_name: Hamann
citation:
ama: Shenar T, Sablowski DP, Hainich R, et al. The Wolf–Rayet binaries of the nitrogen
sequence in the Large Magellanic Cloud. Astronomy & Astrophysics. 2019;627.
doi:10.1051/0004-6361/201935684
apa: Shenar, T., Sablowski, D. P., Hainich, R., Todt, H., Moffat, A. F. J., Oskinova,
L. M., … Hamann, W.-R. (2019). The Wolf–Rayet binaries of the nitrogen sequence
in the Large Magellanic Cloud. Astronomy & Astrophysics. EDP Sciences.
https://doi.org/10.1051/0004-6361/201935684
chicago: Shenar, T., D. P. Sablowski, R. Hainich, H. Todt, A. F. J. Moffat, L. M.
Oskinova, V. Ramachandran, et al. “The Wolf–Rayet Binaries of the Nitrogen Sequence
in the Large Magellanic Cloud.” Astronomy & Astrophysics. EDP Sciences,
2019. https://doi.org/10.1051/0004-6361/201935684.
ieee: T. Shenar et al., “The Wolf–Rayet binaries of the nitrogen sequence
in the Large Magellanic Cloud,” Astronomy & Astrophysics, vol. 627.
EDP Sciences, 2019.
ista: Shenar T, Sablowski DP, Hainich R, Todt H, Moffat AFJ, Oskinova LM, Ramachandran
V, Sana H, Sander AAC, Schnurr O, St-Louis N, Vanbeveren D, Götberg YLL, Hamann
W-R. 2019. The Wolf–Rayet binaries of the nitrogen sequence in the Large Magellanic
Cloud. Astronomy & Astrophysics. 627, A151.
mla: Shenar, T., et al. “The Wolf–Rayet Binaries of the Nitrogen Sequence in the
Large Magellanic Cloud.” Astronomy & Astrophysics, vol. 627, A151,
EDP Sciences, 2019, doi:10.1051/0004-6361/201935684.
short: T. Shenar, D.P. Sablowski, R. Hainich, H. Todt, A.F.J. Moffat, L.M. Oskinova,
V. Ramachandran, H. Sana, A.A.C. Sander, O. Schnurr, N. St-Louis, D. Vanbeveren,
Y.L.L. Götberg, W.-R. Hamann, Astronomy & Astrophysics 627 (2019).
date_created: 2023-08-03T10:14:09Z
date_published: 2019-07-16T00:00:00Z
date_updated: 2023-08-09T12:29:58Z
day: '16'
doi: 10.1051/0004-6361/201935684
extern: '1'
intvolume: ' 627'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1051/0004-6361/201935684
month: '07'
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'
related_material:
link:
- relation: erratum
url: https://doi.org/10.1051/0004-6361/201935684e
scopus_import: '1'
status: public
title: The Wolf–Rayet binaries of the nitrogen sequence in the Large Magellanic Cloud
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 627
year: '2019'
...
---
_id: '13471'
abstract:
- lang: eng
text: We perform an extensive numerical study of the evolution of massive binary
systems to predict the peculiar velocities that stars obtain when their companion
collapses and disrupts the system. Our aim is to (i) identify which predictions
are robust against model uncertainties and assess their implications, (ii) investigate
which physical processes leave a clear imprint and may therefore be constrained
observationally, and (iii) provide a suite of publicly available model predictions
to allow for the use of kinematic constraints from the Gaia mission. We find that
22+26−8% of all massive binary systems merge prior to the first core-collapse
in the system. Of the remainder, 86+11−9% become unbound because of the core-collapse.
Remarkably, this rarely produces runaway stars (observationally defined as stars
with velocities above 30 km s−1). These are outnumbered by more than an order
of magnitude by slower unbound companions, or “walkaway stars”. This is a robust
outcome of our simulations and is due to the reversal of the mass ratio prior
to the explosion and widening of the orbit, as we show analytically and numerically.
For stars more massive than 15 M⊙, we estimate that 10+5−8% are walkaways and
only 0.5+1.0−0.4% are runaways, nearly all of which have accreted mass from their
companion. Our findings are consistent with earlier studies; however, the low
runaway fraction we find is in tension with observed fractions of about 10%. Thus,
astrometric data on presently single massive stars can potentially constrain the
physics of massive binary evolution. Finally, we show that the high end of the
mass distributions of runaway stars is very sensitive to the assumed black hole
natal kicks, and we propose this as a potentially stringent test for the explosion
mechanism. We also discuss companions remaining bound that can evolve into X-ray
and gravitational wave sources.
article_number: A66
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: M.
full_name: Renzo, M.
last_name: Renzo
- first_name: E.
full_name: Zapartas, E.
last_name: Zapartas
- first_name: S. E.
full_name: de Mink, S. E.
last_name: de Mink
- first_name: Ylva Louise Linsdotter
full_name: Götberg, Ylva Louise Linsdotter
id: d0648d0c-0f64-11ee-a2e0-dd0faa2e4f7d
last_name: Götberg
orcid: 0000-0002-6960-6911
- first_name: S.
full_name: Justham, S.
last_name: Justham
- first_name: R. J.
full_name: Farmer, R. J.
last_name: Farmer
- first_name: R. G.
full_name: Izzard, R. G.
last_name: Izzard
- first_name: S.
full_name: Toonen, S.
last_name: Toonen
- first_name: H.
full_name: Sana, H.
last_name: Sana
citation:
ama: Renzo M, Zapartas E, de Mink SE, et al. Massive runaway and walkaway stars.
Astronomy & Astrophysics. 2019;624. doi:10.1051/0004-6361/201833297
apa: Renzo, M., Zapartas, E., de Mink, S. E., Götberg, Y. L. L., Justham, S., Farmer,
R. J., … Sana, H. (2019). Massive runaway and walkaway stars. Astronomy &
Astrophysics. EDP Sciences. https://doi.org/10.1051/0004-6361/201833297
chicago: Renzo, M., E. Zapartas, S. E. de Mink, Ylva Louise Linsdotter Götberg,
S. Justham, R. J. Farmer, R. G. Izzard, S. Toonen, and H. Sana. “Massive Runaway
and Walkaway Stars.” Astronomy & Astrophysics. EDP Sciences, 2019.
https://doi.org/10.1051/0004-6361/201833297.
ieee: M. Renzo et al., “Massive runaway and walkaway stars,” Astronomy
& Astrophysics, vol. 624. EDP Sciences, 2019.
ista: Renzo M, Zapartas E, de Mink SE, Götberg YLL, Justham S, Farmer RJ, Izzard
RG, Toonen S, Sana H. 2019. Massive runaway and walkaway stars. Astronomy &
Astrophysics. 624, A66.
mla: Renzo, M., et al. “Massive Runaway and Walkaway Stars.” Astronomy &
Astrophysics, vol. 624, A66, EDP Sciences, 2019, doi:10.1051/0004-6361/201833297.
short: M. Renzo, E. Zapartas, S.E. de Mink, Y.L.L. Götberg, S. Justham, R.J. Farmer,
R.G. Izzard, S. Toonen, H. Sana, Astronomy & Astrophysics 624 (2019).
date_created: 2023-08-03T10:14:18Z
date_published: 2019-04-11T00:00:00Z
date_updated: 2023-08-09T12:26:08Z
day: '11'
doi: 10.1051/0004-6361/201833297
extern: '1'
external_id:
arxiv:
- '1804.09164'
intvolume: ' 624'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1051/0004-6361/201833297
month: '04'
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: Massive runaway and walkaway stars
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 624
year: '2019'
...
---
_id: '13472'
abstract:
- lang: eng
text: Massive stars in binaries can give rise to extreme phenomena such as X-ray
binaries and gravitational wave sources after one or both stars end their lives
as core-collapse supernovae. Stars in close orbit around a stellar or compact
companion are expected to explode as “stripped-envelope supernovae”, showing no
(Type Ib/c) or little (Type IIb) signs of hydrogen in the spectra, because hydrogen-rich
progenitors are too large to fit. The physical processes responsible for the stripping
process and the fate of the companion are still very poorly understood. Aiming
to find new clues, we investigate Cas A, which is a very young (∼340 yr) and near
(∼3.4 kpc) remnant of a core-collapse supernova. Cas A has been subject to several
searches for possible companions, all unsuccessfully. We present new measurements
of the proper motions and photometry of stars in the vicinity based on deep HST
ACS/WFC and WFC3-IR data. We identify stellar sources that are close enough in
projection but using their proper motions we show that none are compatible with
being at the location of center at the time of explosion, in agreement with earlier
findings. Our photometric measurements allow us to place much deeper (order-of-magnitude)
upper limits on the brightness of possible undetected companions. We systematically
compare them with model predictions for a wide variety of scenarios. We can confidently
rule out the presence of any stellar companion of any reasonable mass and age
(main sequence, pre main sequence or stripped) ruling out what many considered
to be likely evolutionary scenarios for Type IIb supernova (SN IIb). More exotic
scenarios that predict the presence of a compact companion (white dwarf, neutron
star or black hole) are still possible as well as scenarios where the progenitor
of Cas A was single at the moment of explosion (either because it was truly single,
or resulted from a binary that was disrupted, or from a binary merger). The presence
of a compact companion would imply that Cas A is of interest to study exotic outcomes
of binary evolution. The single-at-death solution would still require fine-tuning
of the process that removed most of the envelope through a mass-loss mechanism
yet to be identified. We discuss how future constraints from Gaia and even deeper
photometric studies may help to place further constraints.
article_number: A34
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Wolfgang E.
full_name: Kerzendorf, Wolfgang E.
last_name: Kerzendorf
- first_name: Tuan
full_name: Do, Tuan
last_name: Do
- first_name: Selma E.
full_name: de Mink, Selma E.
last_name: de Mink
- first_name: Ylva Louise Linsdotter
full_name: Götberg, Ylva Louise Linsdotter
id: d0648d0c-0f64-11ee-a2e0-dd0faa2e4f7d
last_name: Götberg
orcid: 0000-0002-6960-6911
- first_name: Dan
full_name: Milisavljevic, Dan
last_name: Milisavljevic
- first_name: Emmanouil
full_name: Zapartas, Emmanouil
last_name: Zapartas
- first_name: Mathieu
full_name: Renzo, Mathieu
last_name: Renzo
- first_name: Stephen
full_name: Justham, Stephen
last_name: Justham
- first_name: Philipp
full_name: Podsiadlowski, Philipp
last_name: Podsiadlowski
- first_name: Robert A.
full_name: Fesen, Robert A.
last_name: Fesen
citation:
ama: Kerzendorf WE, Do T, de Mink SE, et al. No surviving non-compact stellar companion
to Cassiopeia A. Astronomy & Astrophysics. 2019;623. doi:10.1051/0004-6361/201732206
apa: Kerzendorf, W. E., Do, T., de Mink, S. E., Götberg, Y. L. L., Milisavljevic,
D., Zapartas, E., … Fesen, R. A. (2019). No surviving non-compact stellar companion
to Cassiopeia A. Astronomy & Astrophysics. EDP Sciences. https://doi.org/10.1051/0004-6361/201732206
chicago: Kerzendorf, Wolfgang E., Tuan Do, Selma E. de Mink, Ylva Louise Linsdotter
Götberg, Dan Milisavljevic, Emmanouil Zapartas, Mathieu Renzo, Stephen Justham,
Philipp Podsiadlowski, and Robert A. Fesen. “No Surviving Non-Compact Stellar
Companion to Cassiopeia A.” Astronomy & Astrophysics. EDP Sciences,
2019. https://doi.org/10.1051/0004-6361/201732206.
ieee: W. E. Kerzendorf et al., “No surviving non-compact stellar companion
to Cassiopeia A,” Astronomy & Astrophysics, vol. 623. EDP Sciences,
2019.
ista: Kerzendorf WE, Do T, de Mink SE, Götberg YLL, Milisavljevic D, Zapartas E,
Renzo M, Justham S, Podsiadlowski P, Fesen RA. 2019. No surviving non-compact
stellar companion to Cassiopeia A. Astronomy & Astrophysics. 623, A34.
mla: Kerzendorf, Wolfgang E., et al. “No Surviving Non-Compact Stellar Companion
to Cassiopeia A.” Astronomy & Astrophysics, vol. 623, A34, EDP Sciences,
2019, doi:10.1051/0004-6361/201732206.
short: W.E. Kerzendorf, T. Do, S.E. de Mink, Y.L.L. Götberg, D. Milisavljevic, E.
Zapartas, M. Renzo, S. Justham, P. Podsiadlowski, R.A. Fesen, Astronomy &
Astrophysics 623 (2019).
date_created: 2023-08-03T10:14:27Z
date_published: 2019-03-27T00:00:00Z
date_updated: 2023-08-09T12:28:17Z
day: '27'
doi: 10.1051/0004-6361/201732206
extern: '1'
external_id:
arxiv:
- '1711.00055'
intvolume: ' 623'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1051/0004-6361/201732206
month: '03'
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: No surviving non-compact stellar companion to Cassiopeia A
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 623
year: '2019'
...