Near-IR narrow-band imaging with CIRCE at the Gran Telescopio Canarias: Searching for Ly alpha-emitters at z similar to 9.3

Context. Identifying very high-redshift galaxies is crucial for understanding the formation and evolution of galaxies. However, many questions still remain, and the uncertainty on the epoch of reionization is large. In this approach, some models allow a double-reionization scenario, although the num...

ver descrição completa

Detalhes bibliográficos
Autores: Cabello González, Cristina, Gallego Maestro, Jesús, Cardiel López, Nicolás, Pascual Ramírez, Sergio, Guzmán, R., Herrero, A., Manrique, A., Marín Franch, A., Mas Hesse, J. M., Rodriguez Espinosa, J. M., Salvador Solé, E.
Formato: artículo
Fecha de publicación:2022
País:España
Recursos:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/72065
Acesso em linha:https://hdl.handle.net/20.500.14352/72065
Access Level:acceso abierto
Palavra-chave:52
Emission-line galaxies
Luminosity function
Cosmic reionization
Star-formation
Emitting galaxies
H-alpha
Redshift
Constraints
Evolution
Universe
Astrofísica
id ES_2a9ed05bd7d29eee465aaa3f3d4f5981
oai_identifier_str oai:docta.ucm.es:20.500.14352/72065
network_acronym_str ES
network_name_str España
repository_id_str
spelling Near-IR narrow-band imaging with CIRCE at the Gran Telescopio Canarias: Searching for Ly alpha-emitters at z similar to 9.3Cabello González, CristinaGallego Maestro, JesúsCardiel López, NicolásPascual Ramírez, SergioGuzmán, R.Herrero, A.Manrique, A.Marín Franch, A.Mas Hesse, J. M.Rodriguez Espinosa, J. M.Salvador Solé, E.52Emission-line galaxiesLuminosity functionCosmic reionizationStar-formationEmitting galaxiesH-alphaRedshiftConstraintsEvolutionUniverseAstrofísicaContext. Identifying very high-redshift galaxies is crucial for understanding the formation and evolution of galaxies. However, many questions still remain, and the uncertainty on the epoch of reionization is large. In this approach, some models allow a double-reionization scenario, although the number of confirmed detections at very high z is still too low to serve as observational proof. Aims. The main goal of this project is studying whether we can search for Lyman-alpha emitters (LAEs) at z similar to 9 using a narrow-band (NB) filter that was specifically designed by our team and was built for this experiment. Methods. We used the NB technique to select candidates by measuring the flux excess due to the Ly alpha emission. The observations were taken with an NB filter (full width at half minimum of 11 nm and central wavelength lambda(c)1.257 mu m) and the CIRCE near-infrared camera for the Gran Telescopio Canarias. We describe a data reduction procedure that was especially optimized to minimize instrumental effects. With a total exposure time of 18.3 h, the final NB image covers an area of similar to 6.7 arcmin(2), which corresponds to a comoving volume of 1.1 x 10(3) Mpc(3) at =9.3. Results. We pushed the source detection to its limit, which allows us to analyze an initial sample of 97 objects. We detail the different criteria we applied to select the candidates. The criteria included visual verifications in different photometric bands. None of the objects resembled a reliable LAE, however, and we found no robust candidate down to an emission-line flux of 2.9 x 10(-16) erg s(-1) cm(-2), which corresponds to a Ly alpha luminosity limit of 3 x 10(44) erg s(-1). We derive an upper limit on the Ly alpha luminosity function at similar to 9 that agrees well with previous constraints. We conclude that deeper and wider surveys are needed to study the LAE population at the cosmic dawn.EDP ScienciesUniversidad Complutense de Madrid20222022-03-1620222022-03-16journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/72065reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/720652026-06-02T12:44:21Z
dc.title.none.fl_str_mv Near-IR narrow-band imaging with CIRCE at the Gran Telescopio Canarias: Searching for Ly alpha-emitters at z similar to 9.3
title Near-IR narrow-band imaging with CIRCE at the Gran Telescopio Canarias: Searching for Ly alpha-emitters at z similar to 9.3
spellingShingle Near-IR narrow-band imaging with CIRCE at the Gran Telescopio Canarias: Searching for Ly alpha-emitters at z similar to 9.3
Cabello González, Cristina
52
Emission-line galaxies
Luminosity function
Cosmic reionization
Star-formation
Emitting galaxies
H-alpha
Redshift
Constraints
Evolution
Universe
Astrofísica
title_short Near-IR narrow-band imaging with CIRCE at the Gran Telescopio Canarias: Searching for Ly alpha-emitters at z similar to 9.3
title_full Near-IR narrow-band imaging with CIRCE at the Gran Telescopio Canarias: Searching for Ly alpha-emitters at z similar to 9.3
title_fullStr Near-IR narrow-band imaging with CIRCE at the Gran Telescopio Canarias: Searching for Ly alpha-emitters at z similar to 9.3
title_full_unstemmed Near-IR narrow-band imaging with CIRCE at the Gran Telescopio Canarias: Searching for Ly alpha-emitters at z similar to 9.3
title_sort Near-IR narrow-band imaging with CIRCE at the Gran Telescopio Canarias: Searching for Ly alpha-emitters at z similar to 9.3
dc.creator.none.fl_str_mv Cabello González, Cristina
Gallego Maestro, Jesús
Cardiel López, Nicolás
Pascual Ramírez, Sergio
Guzmán, R.
Herrero, A.
Manrique, A.
Marín Franch, A.
Mas Hesse, J. M.
Rodriguez Espinosa, J. M.
Salvador Solé, E.
author Cabello González, Cristina
author_facet Cabello González, Cristina
Gallego Maestro, Jesús
Cardiel López, Nicolás
Pascual Ramírez, Sergio
Guzmán, R.
Herrero, A.
Manrique, A.
Marín Franch, A.
Mas Hesse, J. M.
Rodriguez Espinosa, J. M.
Salvador Solé, E.
author_role author
author2 Gallego Maestro, Jesús
Cardiel López, Nicolás
Pascual Ramírez, Sergio
Guzmán, R.
Herrero, A.
Manrique, A.
Marín Franch, A.
Mas Hesse, J. M.
Rodriguez Espinosa, J. M.
Salvador Solé, E.
author2_role author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 52
Emission-line galaxies
Luminosity function
Cosmic reionization
Star-formation
Emitting galaxies
H-alpha
Redshift
Constraints
Evolution
Universe
Astrofísica
topic 52
Emission-line galaxies
Luminosity function
Cosmic reionization
Star-formation
Emitting galaxies
H-alpha
Redshift
Constraints
Evolution
Universe
Astrofísica
description Context. Identifying very high-redshift galaxies is crucial for understanding the formation and evolution of galaxies. However, many questions still remain, and the uncertainty on the epoch of reionization is large. In this approach, some models allow a double-reionization scenario, although the number of confirmed detections at very high z is still too low to serve as observational proof. Aims. The main goal of this project is studying whether we can search for Lyman-alpha emitters (LAEs) at z similar to 9 using a narrow-band (NB) filter that was specifically designed by our team and was built for this experiment. Methods. We used the NB technique to select candidates by measuring the flux excess due to the Ly alpha emission. The observations were taken with an NB filter (full width at half minimum of 11 nm and central wavelength lambda(c)1.257 mu m) and the CIRCE near-infrared camera for the Gran Telescopio Canarias. We describe a data reduction procedure that was especially optimized to minimize instrumental effects. With a total exposure time of 18.3 h, the final NB image covers an area of similar to 6.7 arcmin(2), which corresponds to a comoving volume of 1.1 x 10(3) Mpc(3) at =9.3. Results. We pushed the source detection to its limit, which allows us to analyze an initial sample of 97 objects. We detail the different criteria we applied to select the candidates. The criteria included visual verifications in different photometric bands. None of the objects resembled a reliable LAE, however, and we found no robust candidate down to an emission-line flux of 2.9 x 10(-16) erg s(-1) cm(-2), which corresponds to a Ly alpha luminosity limit of 3 x 10(44) erg s(-1). We derive an upper limit on the Ly alpha luminosity function at similar to 9 that agrees well with previous constraints. We conclude that deeper and wider surveys are needed to study the LAE population at the cosmic dawn.
publishDate 2022
dc.date.none.fl_str_mv 2022
2022-03-16
2022
2022-03-16
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/72065
url https://hdl.handle.net/20.500.14352/72065
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv EDP Sciencies
publisher.none.fl_str_mv EDP Sciencies
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869405084150923264
score 15.300719

Registos relacionados