Lensed stars in galaxy─galaxy strong lensing ─ a JWST prediction for the Cosmic Horseshoe
We explore for the first time the possibility of detecting lensed star transients in galaxy–galaxy strong lensing systems upon repeated, deep imaging using the James Webb Space Telescope ( JWST ). Our calculation predicts that the extremely high recent star formation rate of ∼140 M yr −1 over the la...
| Autores: | , , , , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/412582 |
| Acceso en línea: | http://hdl.handle.net/10261/412582 |
| Access Level: | acceso abierto |
| Palabra clave: | Gravitational lensing: micro Gravitational lensing: strong |
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Lensed stars in galaxy─galaxy strong lensing ─ a JWST prediction for the Cosmic HorseshoeLi, Sung KeiWeisenbach, LukeCollett, Thomas E.Diego, José MaríaLim, JeremyBroadhurst, TomChow, AlexEnzi, Wolfgang J. R.Kelly, Patrick L.Melo-Carneiro, Carlos R.Palencia, Jose MaríaWilliams, Liliya L. R.Zhang, JiashuoGravitational lensing: microGravitational lensing: strongWe explore for the first time the possibility of detecting lensed star transients in galaxy–galaxy strong lensing systems upon repeated, deep imaging using the James Webb Space Telescope ( JWST ). Our calculation predicts that the extremely high recent star formation rate of ∼140 M yr −1 over the last 50 Myr (not accounting for image multiplicity) in the ‘Cosmic Horseshoe’ lensed system ( z = 2 . 381) generates many young, bright stars, of which their large abundance is expected to lead to a detection rate of ∼60 transients per pointing in JWST observations with a 5 σ limiting magnitude of ∼29 mAB . With the high expected detection rate and little room for uncertainty for the lens model compared with cluster lenses, our result suggests that the Cosmic Horseshoe could be an excellent tool to test the nature of dark matter based on the spatial distribution of transients, and can be used to constrain axion mass if dark matter is constituted of ultra-light axions. We also argue that the large distance modulus of ∼46 . 5 mag at z ≈ 2 . 4 can act as a filter to screen out less massive stars as transients and allow one to better constrain the high-mass end of the stellar initial mass function based on the transient detection rate. Follow-up JWST observations of the Cosmic Horseshoe would allow one to better probe the nature of dark matter and the star formation properties, such as the initial mass function at the cosmic noon, via lensed star transients.SKL, JL, and AC acknowledge support from the Research Grants Council (RGC) of Hong Kong through the General Research Fund (GRF) 17312122. LW, TEC, and WJRE acknowledge support from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (LensEra: grant agreement no. 945536). JMD acknowledges support from project PID2022-138896NB-C51 (MCIU/AEI/MINECO/FEDER, UE) Ministerio de Ciencia, Investigación y Universidades. CRM-C acknowledges the support of the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), through grant 140899/2021-9.Peer reviewedOxford University PressResearch Grants Council (Hong Kong)European Research CouncilEuropean CommissionMinisterio de Ciencia, Innovación y Universidades (España)Agencia Estatal de Investigación (España)Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202620262025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/412582reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/EC/H2020/945536info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2022-138896NB-C51The data are available at Mikulski Archive for Space Telescopes with DOI: 10.17909/0m90-tq84https://doi.org/10.1093/mnras/staf1959Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/4125822026-05-22T06:33:51Z |
| dc.title.none.fl_str_mv |
Lensed stars in galaxy─galaxy strong lensing ─ a JWST prediction for the Cosmic Horseshoe |
| title |
Lensed stars in galaxy─galaxy strong lensing ─ a JWST prediction for the Cosmic Horseshoe |
| spellingShingle |
Lensed stars in galaxy─galaxy strong lensing ─ a JWST prediction for the Cosmic Horseshoe Li, Sung Kei Gravitational lensing: micro Gravitational lensing: strong |
| title_short |
Lensed stars in galaxy─galaxy strong lensing ─ a JWST prediction for the Cosmic Horseshoe |
| title_full |
Lensed stars in galaxy─galaxy strong lensing ─ a JWST prediction for the Cosmic Horseshoe |
| title_fullStr |
Lensed stars in galaxy─galaxy strong lensing ─ a JWST prediction for the Cosmic Horseshoe |
| title_full_unstemmed |
Lensed stars in galaxy─galaxy strong lensing ─ a JWST prediction for the Cosmic Horseshoe |
| title_sort |
Lensed stars in galaxy─galaxy strong lensing ─ a JWST prediction for the Cosmic Horseshoe |
| dc.creator.none.fl_str_mv |
Li, Sung Kei Weisenbach, Luke Collett, Thomas E. Diego, José María Lim, Jeremy Broadhurst, Tom Chow, Alex Enzi, Wolfgang J. R. Kelly, Patrick L. Melo-Carneiro, Carlos R. Palencia, Jose María Williams, Liliya L. R. Zhang, Jiashuo |
| author |
Li, Sung Kei |
| author_facet |
Li, Sung Kei Weisenbach, Luke Collett, Thomas E. Diego, José María Lim, Jeremy Broadhurst, Tom Chow, Alex Enzi, Wolfgang J. R. Kelly, Patrick L. Melo-Carneiro, Carlos R. Palencia, Jose María Williams, Liliya L. R. Zhang, Jiashuo |
| author_role |
author |
| author2 |
Weisenbach, Luke Collett, Thomas E. Diego, José María Lim, Jeremy Broadhurst, Tom Chow, Alex Enzi, Wolfgang J. R. Kelly, Patrick L. Melo-Carneiro, Carlos R. Palencia, Jose María Williams, Liliya L. R. Zhang, Jiashuo |
| author2_role |
author author author author author author author author author author author author |
| dc.contributor.none.fl_str_mv |
Research Grants Council (Hong Kong) European Research Council European Commission Ministerio de Ciencia, Innovación y Universidades (España) Agencia Estatal de Investigación (España) Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil) Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72] |
| dc.subject.none.fl_str_mv |
Gravitational lensing: micro Gravitational lensing: strong |
| topic |
Gravitational lensing: micro Gravitational lensing: strong |
| description |
We explore for the first time the possibility of detecting lensed star transients in galaxy–galaxy strong lensing systems upon repeated, deep imaging using the James Webb Space Telescope ( JWST ). Our calculation predicts that the extremely high recent star formation rate of ∼140 M yr −1 over the last 50 Myr (not accounting for image multiplicity) in the ‘Cosmic Horseshoe’ lensed system ( z = 2 . 381) generates many young, bright stars, of which their large abundance is expected to lead to a detection rate of ∼60 transients per pointing in JWST observations with a 5 σ limiting magnitude of ∼29 mAB . With the high expected detection rate and little room for uncertainty for the lens model compared with cluster lenses, our result suggests that the Cosmic Horseshoe could be an excellent tool to test the nature of dark matter based on the spatial distribution of transients, and can be used to constrain axion mass if dark matter is constituted of ultra-light axions. We also argue that the large distance modulus of ∼46 . 5 mag at z ≈ 2 . 4 can act as a filter to screen out less massive stars as transients and allow one to better constrain the high-mass end of the stellar initial mass function based on the transient detection rate. Follow-up JWST observations of the Cosmic Horseshoe would allow one to better probe the nature of dark matter and the star formation properties, such as the initial mass function at the cosmic noon, via lensed star transients. |
| publishDate |
2025 |
| dc.date.none.fl_str_mv |
2025 2026 2026 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article http://purl.org/coar/resource_type/c_6501 Publisher's version info:eu-repo/semantics/publishedVersion |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/10261/412582 |
| url |
http://hdl.handle.net/10261/412582 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
#PLACEHOLDER_PARENT_METADATA_VALUE# #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/EC/H2020/945536 info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2022-138896NB-C51 The data are available at Mikulski Archive for Space Telescopes with DOI: 10.17909/0m90-tq84 https://doi.org/10.1093/mnras/staf1959 Sí |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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Oxford University Press |
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Oxford University Press |
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reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC instname:Consejo Superior de Investigaciones Científicas (CSIC) |
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Consejo Superior de Investigaciones Científicas (CSIC) |
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DIGITAL.CSIC. Repositorio Institucional del CSIC |
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