Lyα Emitting Galaxies (LAEs) at Cosmic Dawn: Implications and Predictions

The detection of Lyα emitting galaxies (LAEs) puts severe constraints on the reionization history. In this paper, we derive the properties of very high-z LAEs predicted in the only two reionization scenarios shown in a previous paper to be consistent with the current data on 15 independent evolving...

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Detalles Bibliográficos
Autores: Salvador Solé, Eduard, Manrique Oliva, Alberto, Mas-Hesse, José Miguel, Cabello, Cristina, Gallego, Jesús, Rodríguez-Espinosa, José Miguel, Guzmán Tirado, Rafael
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2022
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/192688
Acceso en línea:https://hdl.handle.net/2445/192688
Access Level:acceso abierto
Palabra clave:Cosmologia
Astrofísica
Cosmology
Astrophysics
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spelling Lyα Emitting Galaxies (LAEs) at Cosmic Dawn: Implications and PredictionsSalvador Solé, EduardManrique Oliva, AlbertoMas-Hesse, José MiguelCabello, CristinaGallego, JesúsRodríguez-Espinosa, José MiguelGuzmán Tirado, RafaelCosmologiaAstrofísicaCosmologyAstrophysicsThe detection of Lyα emitting galaxies (LAEs) puts severe constraints on the reionization history. In this paper, we derive the properties of very high-z LAEs predicted in the only two reionization scenarios shown in a previous paper to be consistent with the current data on 15 independent evolving global (or averaged) cosmic properties regarding luminous objects and the intergalactic medium and the optical depth to electron scattering of ionized hydrogen to cosmic microwave background photons: one with a monotonic behavior, which is completed by z = 6, as commonly considered, and another one with a nonmonotonic behavior with two full ionization events at z = 6 and z = 10. We find that the Lyα luminosity functions of very high-z LAEs are very distinct in those two scenarios. Thus, comparing these predictions to the observations that will soon be available thanks to new instruments such as the James Webb Space Telescope, it should be possible to unveil the right reionization scenario. In the meantime, we can compare the predicted redshift distribution and UV (or Lyα) luminosities of very high-z LAEs to those of the few objects already observed at z > 7.5. By doing that, we find that such data are in tension with the single reionization scenario, while they are fully compatible with the double reionization scenario.Institute of Physics (IOP)2022info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/192688Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: https://doi.org/10.3847/1538-4357/ac874cAstrophysical Journal, 2022, vol. 936, num. 2, p. 178https://doi.org/10.3847/1538-4357/ac874c(c) American Astronomical Society, 2022info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1926882026-05-27T06:46:51Z
dc.title.none.fl_str_mv Lyα Emitting Galaxies (LAEs) at Cosmic Dawn: Implications and Predictions
title Lyα Emitting Galaxies (LAEs) at Cosmic Dawn: Implications and Predictions
spellingShingle Lyα Emitting Galaxies (LAEs) at Cosmic Dawn: Implications and Predictions
Salvador Solé, Eduard
Cosmologia
Astrofísica
Cosmology
Astrophysics
title_short Lyα Emitting Galaxies (LAEs) at Cosmic Dawn: Implications and Predictions
title_full Lyα Emitting Galaxies (LAEs) at Cosmic Dawn: Implications and Predictions
title_fullStr Lyα Emitting Galaxies (LAEs) at Cosmic Dawn: Implications and Predictions
title_full_unstemmed Lyα Emitting Galaxies (LAEs) at Cosmic Dawn: Implications and Predictions
title_sort Lyα Emitting Galaxies (LAEs) at Cosmic Dawn: Implications and Predictions
dc.creator.none.fl_str_mv Salvador Solé, Eduard
Manrique Oliva, Alberto
Mas-Hesse, José Miguel
Cabello, Cristina
Gallego, Jesús
Rodríguez-Espinosa, José Miguel
Guzmán Tirado, Rafael
author Salvador Solé, Eduard
author_facet Salvador Solé, Eduard
Manrique Oliva, Alberto
Mas-Hesse, José Miguel
Cabello, Cristina
Gallego, Jesús
Rodríguez-Espinosa, José Miguel
Guzmán Tirado, Rafael
author_role author
author2 Manrique Oliva, Alberto
Mas-Hesse, José Miguel
Cabello, Cristina
Gallego, Jesús
Rodríguez-Espinosa, José Miguel
Guzmán Tirado, Rafael
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Cosmologia
Astrofísica
Cosmology
Astrophysics
topic Cosmologia
Astrofísica
Cosmology
Astrophysics
description The detection of Lyα emitting galaxies (LAEs) puts severe constraints on the reionization history. In this paper, we derive the properties of very high-z LAEs predicted in the only two reionization scenarios shown in a previous paper to be consistent with the current data on 15 independent evolving global (or averaged) cosmic properties regarding luminous objects and the intergalactic medium and the optical depth to electron scattering of ionized hydrogen to cosmic microwave background photons: one with a monotonic behavior, which is completed by z = 6, as commonly considered, and another one with a nonmonotonic behavior with two full ionization events at z = 6 and z = 10. We find that the Lyα luminosity functions of very high-z LAEs are very distinct in those two scenarios. Thus, comparing these predictions to the observations that will soon be available thanks to new instruments such as the James Webb Space Telescope, it should be possible to unveil the right reionization scenario. In the meantime, we can compare the predicted redshift distribution and UV (or Lyα) luminosities of very high-z LAEs to those of the few objects already observed at z > 7.5. By doing that, we find that such data are in tension with the single reionization scenario, while they are fully compatible with the double reionization scenario.
publishDate 2022
dc.date.none.fl_str_mv 2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/192688
url https://hdl.handle.net/2445/192688
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.3847/1538-4357/ac874c
Astrophysical Journal, 2022, vol. 936, num. 2, p. 178
https://doi.org/10.3847/1538-4357/ac874c
dc.rights.none.fl_str_mv (c) American Astronomical Society, 2022
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) American Astronomical Society, 2022
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Institute of Physics (IOP)
publisher.none.fl_str_mv Institute of Physics (IOP)
dc.source.none.fl_str_mv Articles publicats en revistes (Física Quàntica i Astrofísica)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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