--- _id: '8014' abstract: - lang: eng text: 'Working memory, the ability to keep recently accessed information available for immediate manipulation, has been proposed to rely on two mechanisms that appear difficult to reconcile: self-sustained neural firing, or the opposite—activity-silent synaptic traces. Here we review and contrast models of these two mechanisms, and then show that both phenomena can co-exist within a unified system in which neurons hold information in both activity and synapses. Rapid plasticity in flexibly-coding neurons allows features to be bound together into objects, with an important emergent property being the focus of attention. One memory item is held by persistent activity in an attended or “focused” state, and is thus remembered better than other items. Other, previously attended items can remain in memory but in the background, encoded in activity-silent synaptic traces. This dual functional architecture provides a unified common mechanism accounting for a diversity of perplexing attention and memory effects that have been hitherto difficult to explain in a single theoretical framework.' article_processing_charge: No article_type: original author: - first_name: Sanjay G. full_name: Manohar, Sanjay G. last_name: Manohar - first_name: Nahid full_name: Zokaei, Nahid last_name: Zokaei - first_name: Sean J. full_name: Fallon, Sean J. last_name: Fallon - first_name: Tim P full_name: Vogels, Tim P id: CB6FF8D2-008F-11EA-8E08-2637E6697425 last_name: Vogels orcid: 0000-0003-3295-6181 - first_name: Masud full_name: Husain, Masud last_name: Husain citation: ama: Manohar SG, Zokaei N, Fallon SJ, Vogels TP, Husain M. Neural mechanisms of attending to items in working memory. Neuroscience and Biobehavioral Reviews. 2019;101:1-12. doi:10.1016/j.neubiorev.2019.03.017 apa: Manohar, S. G., Zokaei, N., Fallon, S. J., Vogels, T. P., & Husain, M. (2019). Neural mechanisms of attending to items in working memory. Neuroscience and Biobehavioral Reviews. Elsevier . https://doi.org/10.1016/j.neubiorev.2019.03.017 chicago: Manohar, Sanjay G., Nahid Zokaei, Sean J. Fallon, Tim P Vogels, and Masud Husain. “Neural Mechanisms of Attending to Items in Working Memory.” Neuroscience and Biobehavioral Reviews. Elsevier , 2019. https://doi.org/10.1016/j.neubiorev.2019.03.017. ieee: S. G. Manohar, N. Zokaei, S. J. Fallon, T. P. Vogels, and M. Husain, “Neural mechanisms of attending to items in working memory,” Neuroscience and Biobehavioral Reviews, vol. 101. Elsevier , pp. 1–12, 2019. ista: Manohar SG, Zokaei N, Fallon SJ, Vogels TP, Husain M. 2019. Neural mechanisms of attending to items in working memory. Neuroscience and Biobehavioral Reviews. 101, 1–12. mla: Manohar, Sanjay G., et al. “Neural Mechanisms of Attending to Items in Working Memory.” Neuroscience and Biobehavioral Reviews, vol. 101, Elsevier , 2019, pp. 1–12, doi:10.1016/j.neubiorev.2019.03.017. short: S.G. Manohar, N. Zokaei, S.J. Fallon, T.P. Vogels, M. Husain, Neuroscience and Biobehavioral Reviews 101 (2019) 1–12. date_created: 2020-06-25T12:52:13Z date_published: 2019-06-01T00:00:00Z date_updated: 2021-01-12T08:16:31Z day: '01' ddc: - '570' doi: 10.1016/j.neubiorev.2019.03.017 extern: '1' external_id: pmid: - '30922977' file: - access_level: open_access checksum: 7b972e3d6f7bb3122c8c5648f44e60ca content_type: application/pdf creator: cziletti date_created: 2020-07-02T13:17:52Z date_updated: 2020-07-14T12:48:08Z file_id: '8080' file_name: 2019_NeurosBiobehavRev_Manohar.pdf file_size: 1754418 relation: main_file file_date_updated: 2020-07-14T12:48:08Z has_accepted_license: '1' intvolume: ' 101' language: - iso: eng main_file_link: - open_access: '1' url: 'https://doi.org/10.1101/233007 ' month: '06' oa: 1 oa_version: Published Version page: 1-12 pmid: 1 publication: Neuroscience and Biobehavioral Reviews publication_identifier: issn: - 0149-7634 publication_status: published publisher: 'Elsevier ' quality_controlled: '1' status: public title: Neural mechanisms of attending to items in working memory 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: D865714E-FA4E-11E9-B85B-F5C5E5697425 volume: 101 year: '2019' ... --- _id: '8175' abstract: - lang: eng text: We study edge asymptotics of poissonized Plancherel-type measures on skew Young diagrams (integer partitions). These measures can be seen as generalizations of those studied by Baik--Deift--Johansson and Baik--Rains in resolving Ulam's problem on longest increasing subsequences of random permutations and the last passage percolation (corner growth) discrete versions thereof. Moreover they interpolate between said measures and the uniform measure on partitions. In the new KPZ-like 1/3 exponent edge scaling limit with logarithmic corrections, we find new probability distributions generalizing the classical Tracy--Widom GUE, GOE and GSE distributions from the theory of random matrices. acknowledgement: "D.B. is especially grateful to Patrik Ferrari for suggesting simplifications in Section 3 and\r\nto Alessandra Occelli for suggesting the name for the models of Section 2.\r\n" article_number: '34' article_processing_charge: No arxiv: 1 author: - first_name: Dan full_name: Betea, Dan last_name: Betea - first_name: Jérémie full_name: Bouttier, Jérémie last_name: Bouttier - first_name: Peter full_name: Nejjar, Peter id: 4BF426E2-F248-11E8-B48F-1D18A9856A87 last_name: Nejjar - first_name: Mirjana full_name: Vuletíc, Mirjana last_name: Vuletíc citation: ama: 'Betea D, Bouttier J, Nejjar P, Vuletíc M. New edge asymptotics of skew Young diagrams via free boundaries. In: Proceedings on the 31st International Conference on Formal Power Series and Algebraic Combinatorics. Formal Power Series and Algebraic Combinatorics; 2019.' apa: 'Betea, D., Bouttier, J., Nejjar, P., & Vuletíc, M. (2019). New edge asymptotics of skew Young diagrams via free boundaries. In Proceedings on the 31st International Conference on Formal Power Series and Algebraic Combinatorics. Ljubljana, Slovenia: Formal Power Series and Algebraic Combinatorics.' chicago: Betea, Dan, Jérémie Bouttier, Peter Nejjar, and Mirjana Vuletíc. “New Edge Asymptotics of Skew Young Diagrams via Free Boundaries.” In Proceedings on the 31st International Conference on Formal Power Series and Algebraic Combinatorics. Formal Power Series and Algebraic Combinatorics, 2019. ieee: D. Betea, J. Bouttier, P. Nejjar, and M. Vuletíc, “New edge asymptotics of skew Young diagrams via free boundaries,” in Proceedings on the 31st International Conference on Formal Power Series and Algebraic Combinatorics, Ljubljana, Slovenia, 2019. ista: 'Betea D, Bouttier J, Nejjar P, Vuletíc M. 2019. New edge asymptotics of skew Young diagrams via free boundaries. Proceedings on the 31st International Conference on Formal Power Series and Algebraic Combinatorics. FPSAC: International Conference on Formal Power Series and Algebraic Combinatorics, 34.' mla: Betea, Dan, et al. “New Edge Asymptotics of Skew Young Diagrams via Free Boundaries.” Proceedings on the 31st International Conference on Formal Power Series and Algebraic Combinatorics, 34, Formal Power Series and Algebraic Combinatorics, 2019. short: D. Betea, J. Bouttier, P. Nejjar, M. Vuletíc, in:, Proceedings on the 31st International Conference on Formal Power Series and Algebraic Combinatorics, Formal Power Series and Algebraic Combinatorics, 2019. conference: end_date: 2019-07-05 location: Ljubljana, Slovenia name: 'FPSAC: International Conference on Formal Power Series and Algebraic Combinatorics' start_date: 2019-07-01 date_created: 2020-07-26T22:01:04Z date_published: 2019-07-01T00:00:00Z date_updated: 2021-01-12T08:17:18Z day: '01' department: - _id: LaEr ec_funded: 1 external_id: arxiv: - '1902.08750' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1902.08750 month: '07' oa: 1 oa_version: Preprint project: - _id: 258DCDE6-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '338804' name: Random matrices, universality and disordered quantum systems - _id: 256E75B8-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '716117' name: Optimal Transport and Stochastic Dynamics publication: Proceedings on the 31st International Conference on Formal Power Series and Algebraic Combinatorics publication_status: published publisher: Formal Power Series and Algebraic Combinatorics quality_controlled: '1' scopus_import: '1' status: public title: New edge asymptotics of skew Young diagrams via free boundaries type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2019' ... --- _id: '8182' abstract: - lang: eng text: "Suppose that $n\\neq p^k$ and $n\\neq 2p^k$ for all $k$ and all primes $p$. We prove that for any Hausdorff compactum $X$ with a free action of the symmetric group $\\mathfrak S_n$ there exists an $\\mathfrak S_n$-equivariant map $X \\to\r\n{\\mathbb R}^n$ whose image avoids the diagonal $\\{(x,x\\dots,x)\\in {\\mathbb R}^n|x\\in {\\mathbb R}\\}$.\r\n Previously, the special cases of this statement for certain $X$ were usually proved using the equivartiant obstruction theory. Such calculations are difficult and may become infeasible past the first (primary) obstruction. We\r\ntake a different approach which allows us to prove the vanishing of all obstructions simultaneously. The essential step in the proof is classifying the possible degrees of $\\mathfrak S_n$-equivariant maps from the boundary\r\n$\\partial\\Delta^{n-1}$ of $(n-1)$-simplex to itself. Existence of equivariant maps between spaces is important for many questions arising from discrete mathematics and geometry, such as Kneser's conjecture, the Square Peg conjecture, the Splitting Necklace problem, and the Topological Tverberg conjecture, etc. We demonstrate the utility of our result applying it to one such question, a specific instance of envy-free division problem." article_number: '1910.12628' article_processing_charge: No arxiv: 1 author: - first_name: Sergey full_name: Avvakumov, Sergey id: 3827DAC8-F248-11E8-B48F-1D18A9856A87 last_name: Avvakumov - first_name: Sergey full_name: Kudrya, Sergey id: ecf01965-d252-11ea-95a5-8ada5f6c6a67 last_name: Kudrya citation: ama: Avvakumov S, Kudrya S. Vanishing of all equivariant obstructions and the mapping degree. arXiv. apa: Avvakumov, S., & Kudrya, S. (n.d.). Vanishing of all equivariant obstructions and the mapping degree. arXiv. arXiv. chicago: Avvakumov, Sergey, and Sergey Kudrya. “Vanishing of All Equivariant Obstructions and the Mapping Degree.” ArXiv. arXiv, n.d. ieee: S. Avvakumov and S. Kudrya, “Vanishing of all equivariant obstructions and the mapping degree,” arXiv. arXiv. ista: Avvakumov S, Kudrya S. Vanishing of all equivariant obstructions and the mapping degree. arXiv, 1910.12628. mla: Avvakumov, Sergey, and Sergey Kudrya. “Vanishing of All Equivariant Obstructions and the Mapping Degree.” ArXiv, 1910.12628, arXiv. short: S. Avvakumov, S. Kudrya, ArXiv (n.d.). date_created: 2020-07-30T10:45:08Z date_published: 2019-10-28T00:00:00Z date_updated: 2023-09-07T13:12:17Z day: '28' department: - _id: UlWa external_id: arxiv: - '1910.12628' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1910.12628 month: '10' oa: 1 oa_version: Preprint project: - _id: 26611F5C-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P31312 name: Algorithms for Embeddings and Homotopy Theory publication: arXiv publication_status: submitted publisher: arXiv related_material: record: - id: '11446' relation: later_version status: public - id: '8156' relation: dissertation_contains status: public status: public title: Vanishing of all equivariant obstructions and the mapping degree type: preprint user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2019' ... --- _id: '8184' abstract: - lang: eng text: "Denote by ∆N the N-dimensional simplex. A map f : ∆N → Rd is an almost r-embedding if fσ1∩. . .∩fσr = ∅ whenever σ1, . . . , σr are pairwise disjoint faces. A counterexample to the topological Tverberg conjecture asserts that if r is not a prime power and d ≥ 2r + 1, then there is an almost r-embedding ∆(d+1)(r−1) → Rd. This was improved by Blagojevi´c–Frick–Ziegler using a simple construction of higher-dimensional counterexamples by taking k-fold join power of lower-dimensional ones. We improve this further (for d large compared to r): If r is not a prime power and N := (d+ 1)r−r l\r\nd + 2 r + 1 m−2, then there is an almost r-embedding ∆N → Rd. For the r-fold van Kampen–Flores conjecture we also produce counterexamples which are stronger than previously known. Our proof is based on generalizations of the Mabillard–Wagner theorem on construction of almost r-embeddings from equivariant maps, and of the Ozaydin theorem on existence of equivariant maps. " acknowledgement: We would like to thank F. Frick for helpful discussions article_number: '1908.08731' article_processing_charge: No arxiv: 1 author: - first_name: Sergey full_name: Avvakumov, Sergey id: 3827DAC8-F248-11E8-B48F-1D18A9856A87 last_name: Avvakumov - first_name: R. full_name: Karasev, R. last_name: Karasev - first_name: A. full_name: Skopenkov, A. last_name: Skopenkov citation: ama: Avvakumov S, Karasev R, Skopenkov A. Stronger counterexamples to the topological Tverberg conjecture. arXiv. apa: Avvakumov, S., Karasev, R., & Skopenkov, A. (n.d.). Stronger counterexamples to the topological Tverberg conjecture. arXiv. arXiv. chicago: Avvakumov, Sergey, R. Karasev, and A. Skopenkov. “Stronger Counterexamples to the Topological Tverberg Conjecture.” ArXiv. arXiv, n.d. ieee: S. Avvakumov, R. Karasev, and A. Skopenkov, “Stronger counterexamples to the topological Tverberg conjecture,” arXiv. arXiv. ista: Avvakumov S, Karasev R, Skopenkov A. Stronger counterexamples to the topological Tverberg conjecture. arXiv, 1908.08731. mla: Avvakumov, Sergey, et al. “Stronger Counterexamples to the Topological Tverberg Conjecture.” ArXiv, 1908.08731, arXiv. short: S. Avvakumov, R. Karasev, A. Skopenkov, ArXiv (n.d.). date_created: 2020-07-30T10:45:34Z date_published: 2019-08-23T00:00:00Z date_updated: 2023-09-08T11:20:02Z day: '23' department: - _id: UlWa external_id: arxiv: - '1908.08731' isi: - '000986519600004' isi: 1 language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1908.08731 month: '08' oa: 1 oa_version: Preprint project: - _id: 26611F5C-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P31312 name: Algorithms for Embeddings and Homotopy Theory publication: arXiv publication_status: submitted publisher: arXiv related_material: record: - id: '8156' relation: dissertation_contains status: public status: public title: Stronger counterexamples to the topological Tverberg conjecture type: preprint user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 year: '2019' ... --- _id: '8185' abstract: - lang: eng text: "In this paper we study envy-free division problems. The classical approach to some of such problems, used by David Gale, reduces to considering continuous maps of a simplex to itself and finding sufficient conditions when this map hits the center of the simplex. The mere continuity is not sufficient for such a conclusion, the usual assumption (for example, in the Knaster--Kuratowski--Mazurkiewicz and the Gale theorem) is a certain boundary condition.\r\n We follow Erel Segal-Halevi, Fr\\'ed\\'eric Meunier, and Shira Zerbib, and replace the boundary condition by another assumption, which has the economic meaning of possibility for a player to prefer an empty part in the segment\r\npartition problem. We solve the problem positively when $n$, the number of players that divide the segment, is a prime power, and we provide counterexamples for every $n$ which is not a prime power. We also provide counterexamples relevant to a wider class of fair or envy-free partition problems when $n$ is odd and not a prime power." article_number: '1907.11183' article_processing_charge: No arxiv: 1 author: - first_name: Sergey full_name: Avvakumov, Sergey id: 3827DAC8-F248-11E8-B48F-1D18A9856A87 last_name: Avvakumov - first_name: Roman full_name: Karasev, Roman last_name: Karasev citation: ama: Avvakumov S, Karasev R. Envy-free division using mapping degree. arXiv. doi:10.48550/arXiv.1907.11183 apa: Avvakumov, S., & Karasev, R. (n.d.). Envy-free division using mapping degree. arXiv. https://doi.org/10.48550/arXiv.1907.11183 chicago: Avvakumov, Sergey, and Roman Karasev. “Envy-Free Division Using Mapping Degree.” ArXiv, n.d. https://doi.org/10.48550/arXiv.1907.11183. ieee: S. Avvakumov and R. Karasev, “Envy-free division using mapping degree,” arXiv. . ista: Avvakumov S, Karasev R. Envy-free division using mapping degree. arXiv, 1907.11183. mla: Avvakumov, Sergey, and Roman Karasev. “Envy-Free Division Using Mapping Degree.” ArXiv, 1907.11183, doi:10.48550/arXiv.1907.11183. short: S. Avvakumov, R. Karasev, ArXiv (n.d.). date_created: 2020-07-30T10:45:51Z date_published: 2019-07-25T00:00:00Z date_updated: 2023-09-07T13:12:17Z day: '25' department: - _id: UlWa doi: 10.48550/arXiv.1907.11183 external_id: arxiv: - '1907.11183' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1907.11183 month: '07' oa: 1 oa_version: Preprint project: - _id: 26611F5C-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P31312 name: Algorithms for Embeddings and Homotopy Theory publication: arXiv publication_status: submitted related_material: link: - relation: later_version url: https://doi.org/10.1112/mtk.12059 record: - id: '8156' relation: dissertation_contains status: public status: public title: Envy-free division using mapping degree type: preprint user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 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: '170' abstract: - lang: eng text: Upper and lower bounds, of the expected order of magnitude, are obtained for the number of rational points of bounded height on any quartic del Pezzo surface over ℚ that contains a conic defined over ℚ . arxiv: 1 author: - first_name: Timothy D full_name: Browning, Timothy D id: 35827D50-F248-11E8-B48F-1D18A9856A87 last_name: Browning orcid: 0000-0002-8314-0177 - first_name: Efthymios full_name: Sofos, Efthymios last_name: Sofos citation: ama: Browning TD, Sofos E. Counting rational points on quartic del Pezzo surfaces with a rational conic. Mathematische Annalen. 2019;373(3-4):977-1016. doi:10.1007/s00208-018-1716-6 apa: Browning, T. D., & Sofos, E. (2019). Counting rational points on quartic del Pezzo surfaces with a rational conic. Mathematische Annalen. Springer Nature. https://doi.org/10.1007/s00208-018-1716-6 chicago: Browning, Timothy D, and Efthymios Sofos. “Counting Rational Points on Quartic Del Pezzo Surfaces with a Rational Conic.” Mathematische Annalen. Springer Nature, 2019. https://doi.org/10.1007/s00208-018-1716-6. ieee: T. D. Browning and E. Sofos, “Counting rational points on quartic del Pezzo surfaces with a rational conic,” Mathematische Annalen, vol. 373, no. 3–4. Springer Nature, pp. 977–1016, 2019. ista: Browning TD, Sofos E. 2019. Counting rational points on quartic del Pezzo surfaces with a rational conic. Mathematische Annalen. 373(3–4), 977–1016. mla: Browning, Timothy D., and Efthymios Sofos. “Counting Rational Points on Quartic Del Pezzo Surfaces with a Rational Conic.” Mathematische Annalen, vol. 373, no. 3–4, Springer Nature, 2019, pp. 977–1016, doi:10.1007/s00208-018-1716-6. short: T.D. Browning, E. Sofos, Mathematische Annalen 373 (2019) 977–1016. date_created: 2018-12-11T11:44:59Z date_published: 2019-04-01T00:00:00Z date_updated: 2021-01-12T06:52:37Z day: '01' ddc: - '510' doi: 10.1007/s00208-018-1716-6 extern: '1' external_id: arxiv: - '1609.09057' file: - access_level: open_access checksum: 4061dc2fe99bee25d9adf2d2018cf608 content_type: application/pdf creator: dernst date_created: 2019-05-23T07:53:27Z date_updated: 2020-07-14T12:45:12Z file_id: '6479' file_name: 2019_MathAnnalen_Browning.pdf file_size: 712847 relation: main_file file_date_updated: 2020-07-14T12:45:12Z has_accepted_license: '1' intvolume: ' 373' issue: 3-4 language: - iso: eng month: '04' oa: 1 oa_version: Published Version page: 977-1016 publication: Mathematische Annalen publication_status: published publisher: Springer Nature quality_controlled: '1' status: public title: Counting rational points on quartic del Pezzo surfaces with a rational conic 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: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 373 year: '2019' ... --- _id: '175' abstract: - lang: eng text: An upper bound sieve for rational points on suitable varieties isdeveloped, together with applications tocounting rational points in thin sets,to local solubility in families, and to the notion of “friable” rational pointswith respect to divisors. In the special case of quadrics, sharper estimates areobtained by developing a version of the Selberg sieve for rational points. article_processing_charge: No arxiv: 1 author: - first_name: Timothy D full_name: Browning, Timothy D id: 35827D50-F248-11E8-B48F-1D18A9856A87 last_name: Browning orcid: 0000-0002-8314-0177 - first_name: Daniel full_name: Loughran, Daniel last_name: Loughran citation: ama: Browning TD, Loughran D. Sieving rational points on varieties. Transactions of the American Mathematical Society. 2019;371(8):5757-5785. doi:10.1090/tran/7514 apa: Browning, T. D., & Loughran, D. (2019). Sieving rational points on varieties. Transactions of the American Mathematical Society. American Mathematical Society. https://doi.org/10.1090/tran/7514 chicago: Browning, Timothy D, and Daniel Loughran. “Sieving Rational Points on Varieties.” Transactions of the American Mathematical Society. American Mathematical Society, 2019. https://doi.org/10.1090/tran/7514. ieee: T. D. Browning and D. Loughran, “Sieving rational points on varieties,” Transactions of the American Mathematical Society, vol. 371, no. 8. American Mathematical Society, pp. 5757–5785, 2019. ista: Browning TD, Loughran D. 2019. Sieving rational points on varieties. Transactions of the American Mathematical Society. 371(8), 5757–5785. mla: Browning, Timothy D., and Daniel Loughran. “Sieving Rational Points on Varieties.” Transactions of the American Mathematical Society, vol. 371, no. 8, American Mathematical Society, 2019, pp. 5757–85, doi:10.1090/tran/7514. short: T.D. Browning, D. Loughran, Transactions of the American Mathematical Society 371 (2019) 5757–5785. date_created: 2018-12-11T11:45:01Z date_published: 2019-04-15T00:00:00Z date_updated: 2023-08-24T14:34:56Z day: '15' department: - _id: TiBr doi: 10.1090/tran/7514 external_id: arxiv: - '1705.01999' isi: - '000464034200019' intvolume: ' 371' isi: 1 issue: '8' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1705.01999 month: '04' oa: 1 oa_version: Preprint page: 5757-5785 publication: Transactions of the American Mathematical Society publication_identifier: eissn: - '10886850' issn: - '00029947' publication_status: published publisher: American Mathematical Society publist_id: '7746' quality_controlled: '1' scopus_import: '1' status: public title: Sieving rational points on varieties type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 371 year: '2019' ... --- _id: '196' abstract: - lang: eng text: 'The abelian sandpile serves as a model to study self-organized criticality, a phenomenon occurring in biological, physical and social processes. The identity of the abelian group is a fractal composed of self-similar patches, and its limit is subject of extensive collaborative research. Here, we analyze the evolution of the sandpile identity under harmonic fields of different orders. We show that this evolution corresponds to periodic cycles through the abelian group characterized by the smooth transformation and apparent conservation of the patches constituting the identity. The dynamics induced by second and third order harmonics resemble smooth stretchings, respectively translations, of the identity, while the ones induced by fourth order harmonics resemble magnifications and rotations. Starting with order three, the dynamics pass through extended regions of seemingly random configurations which spontaneously reassemble into accentuated patterns. We show that the space of harmonic functions projects to the extended analogue of the sandpile group, thus providing a set of universal coordinates identifying configurations between different domains. Since the original sandpile group is a subgroup of the extended one, this directly implies that it admits a natural renormalization. Furthermore, we show that the harmonic fields can be induced by simple Markov processes, and that the corresponding stochastic dynamics show remarkable robustness over hundreds of periods. Finally, we encode information into seemingly random configurations, and decode this information with an algorithm requiring minimal prior knowledge. Our results suggest that harmonic fields might split the sandpile group into sub-sets showing different critical coefficients, and that it might be possible to extend the fractal structure of the identity beyond the boundaries of its domain. ' acknowledgement: "M.L. is grateful to the members of the C Guet and G Tkacik groups for valuable comments and support. M.S. is grateful to Nikita Kalinin for inspiring communications.\r\n" article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Moritz full_name: Lang, Moritz id: 29E0800A-F248-11E8-B48F-1D18A9856A87 last_name: Lang - first_name: Mikhail full_name: Shkolnikov, Mikhail id: 35084A62-F248-11E8-B48F-1D18A9856A87 last_name: Shkolnikov orcid: 0000-0002-4310-178X citation: ama: Lang M, Shkolnikov M. Harmonic dynamics of the Abelian sandpile. Proceedings of the National Academy of Sciences. 2019;116(8):2821-2830. doi:10.1073/pnas.1812015116 apa: Lang, M., & Shkolnikov, M. (2019). Harmonic dynamics of the Abelian sandpile. Proceedings of the National Academy of Sciences. National Academy of Sciences. https://doi.org/10.1073/pnas.1812015116 chicago: Lang, Moritz, and Mikhail Shkolnikov. “Harmonic Dynamics of the Abelian Sandpile.” Proceedings of the National Academy of Sciences. National Academy of Sciences, 2019. https://doi.org/10.1073/pnas.1812015116. ieee: M. Lang and M. Shkolnikov, “Harmonic dynamics of the Abelian sandpile,” Proceedings of the National Academy of Sciences, vol. 116, no. 8. National Academy of Sciences, pp. 2821–2830, 2019. ista: Lang M, Shkolnikov M. 2019. Harmonic dynamics of the Abelian sandpile. Proceedings of the National Academy of Sciences. 116(8), 2821–2830. mla: Lang, Moritz, and Mikhail Shkolnikov. “Harmonic Dynamics of the Abelian Sandpile.” Proceedings of the National Academy of Sciences, vol. 116, no. 8, National Academy of Sciences, 2019, pp. 2821–30, doi:10.1073/pnas.1812015116. short: M. Lang, M. Shkolnikov, Proceedings of the National Academy of Sciences 116 (2019) 2821–2830. date_created: 2018-12-11T11:45:08Z date_published: 2019-02-19T00:00:00Z date_updated: 2023-09-11T14:09:34Z day: '19' department: - _id: CaGu - _id: GaTk - _id: TaHa doi: 10.1073/pnas.1812015116 external_id: arxiv: - '1806.10823' isi: - '000459074400013' pmid: - ' 30728300' intvolume: ' 116' isi: 1 issue: '8' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1073/pnas.1812015116 month: '02' oa: 1 oa_version: Published Version page: 2821-2830 pmid: 1 publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 publication_status: published publisher: National Academy of Sciences quality_controlled: '1' related_material: link: - description: News on IST Webpage relation: press_release url: https://ist.ac.at/en/news/famous-sandpile-model-shown-to-move-like-a-traveling-sand-dune/ scopus_import: '1' status: public title: Harmonic dynamics of the Abelian sandpile type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 116 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' ...