The ALHAMBRA survey: Bayesian photometric redshifts with 23 bands for 3 deg2

The Advance Large Homogeneous Area Medium-Band Redshift Astronomical (ALHAMBRA) survey has observed eight different regions of the sky, including sections of the Cosmic Evolution Survey (COSMOS), DEEP2, European Large-Area Infrared Space Observatory Survey (ELAIS), Great Observatories Origins Deep S...

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Autores: Molino, A., Benítez, N., Moles, M., Fernández Soto, A., Cristóbal Hornillos, D., Ascaso, Begoña, Jiménez Teja, Y., Schoenell, W., Arnalte-Mur, P., Cabrera Caño, Jesús María
Tipo de documento: artigo
Estado:Versão publicada
Data de publicação:2014
País:España
Recursos:Universidad de Sevilla (US)
Repositório:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/61127
Acesso em linha:http://hdl.handle.net/11441/61127
https://doi.org/10.1093/mnras/stu387
Access Level:Acceso aberto
Palavra-chave:Catalogues
Galaxies: distances and redshifts
Galaxies: evolution
Galaxies: photometry
Methods: data analysis
Surveys
Techniques: photometric
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spelling The ALHAMBRA survey: Bayesian photometric redshifts with 23 bands for 3 deg2Molino, A.Benítez, N.Moles, M.Fernández Soto, A.Cristóbal Hornillos, D.Ascaso, BegoñaJiménez Teja, Y.Schoenell, W.Arnalte-Mur, P.Cabrera Caño, Jesús MaríaCataloguesGalaxies: distances and redshiftsGalaxies: evolutionGalaxies: photometryMethods: data analysisSurveysTechniques: photometricThe Advance Large Homogeneous Area Medium-Band Redshift Astronomical (ALHAMBRA) survey has observed eight different regions of the sky, including sections of the Cosmic Evolution Survey (COSMOS), DEEP2, European Large-Area Infrared Space Observatory Survey (ELAIS), Great Observatories Origins Deep Survey North (GOODS-N), Sloan Digital Sky Survey (SDSS) and Groth fields using a new photometric system with 20 optical, contiguous ~300-Å filters plus the JHKs bands. The filter system is designed to optimize the effective photometric redshift depth of the survey, while having enough wavelength resolution for the identification of faint emission lines. The observations, carried out with the Calar Alto 3.5-m telescope using the wide-field optical camera Large Area Imager for Calar Alto (LAICA) and the near-infrared (NIR) instrument Omega-2000, represent a total of ~700 h of on-target science images. Here we present multicolour point-spread function (PSF) corrected photometry and photometric redshifts for ~438 000 galaxies, detected in synthetic F814W images. The catalogues are complete down to a magnitude I~24.5AB and cover an effective area of 2.79 deg2. Photometric zero-points were calibrated using stellar transformation equations and refined internally, using a new technique based on the highly robust photometric redshifts measured for emission-line galaxies. We calculate Bayesian photometric redshifts with the Bayesian Photometric Redshift (BPZ)2.0 code, obtaining a precision of δz/(1+zs)=1 per cent for I<22.5 and δz/(1+zs)=1.4 per cent for 22.5<I<24.5. The global n(z) distribution shows a mean redshift 〈z〉=0.56 for I<22.5 AB and 〈z〉=0.86 for I<24.5 AB. Given its depth and small cosmic variance, ALHAMBRA is a unique data set for galaxy evolution studies.Oxford University PressFísica Atómica, Molecular y Nuclear2014info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttp://hdl.handle.net/11441/61127https://doi.org/10.1093/mnras/stu387reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésMonthly Notices of the Royal Astronomical Society, 441 (4), 2891-2922.http://dx.doi.org/10.1093/mnras/stu387info:eu-repo/semantics/openAccessoai:idus.us.es:11441/611272026-06-17T12:51:07Z
dc.title.none.fl_str_mv The ALHAMBRA survey: Bayesian photometric redshifts with 23 bands for 3 deg2
title The ALHAMBRA survey: Bayesian photometric redshifts with 23 bands for 3 deg2
spellingShingle The ALHAMBRA survey: Bayesian photometric redshifts with 23 bands for 3 deg2
Molino, A.
Catalogues
Galaxies: distances and redshifts
Galaxies: evolution
Galaxies: photometry
Methods: data analysis
Surveys
Techniques: photometric
title_short The ALHAMBRA survey: Bayesian photometric redshifts with 23 bands for 3 deg2
title_full The ALHAMBRA survey: Bayesian photometric redshifts with 23 bands for 3 deg2
title_fullStr The ALHAMBRA survey: Bayesian photometric redshifts with 23 bands for 3 deg2
title_full_unstemmed The ALHAMBRA survey: Bayesian photometric redshifts with 23 bands for 3 deg2
title_sort The ALHAMBRA survey: Bayesian photometric redshifts with 23 bands for 3 deg2
dc.creator.none.fl_str_mv Molino, A.
Benítez, N.
Moles, M.
Fernández Soto, A.
Cristóbal Hornillos, D.
Ascaso, Begoña
Jiménez Teja, Y.
Schoenell, W.
Arnalte-Mur, P.
Cabrera Caño, Jesús María
author Molino, A.
author_facet Molino, A.
Benítez, N.
Moles, M.
Fernández Soto, A.
Cristóbal Hornillos, D.
Ascaso, Begoña
Jiménez Teja, Y.
Schoenell, W.
Arnalte-Mur, P.
Cabrera Caño, Jesús María
author_role author
author2 Benítez, N.
Moles, M.
Fernández Soto, A.
Cristóbal Hornillos, D.
Ascaso, Begoña
Jiménez Teja, Y.
Schoenell, W.
Arnalte-Mur, P.
Cabrera Caño, Jesús María
author2_role author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Física Atómica, Molecular y Nuclear
dc.subject.none.fl_str_mv Catalogues
Galaxies: distances and redshifts
Galaxies: evolution
Galaxies: photometry
Methods: data analysis
Surveys
Techniques: photometric
topic Catalogues
Galaxies: distances and redshifts
Galaxies: evolution
Galaxies: photometry
Methods: data analysis
Surveys
Techniques: photometric
description The Advance Large Homogeneous Area Medium-Band Redshift Astronomical (ALHAMBRA) survey has observed eight different regions of the sky, including sections of the Cosmic Evolution Survey (COSMOS), DEEP2, European Large-Area Infrared Space Observatory Survey (ELAIS), Great Observatories Origins Deep Survey North (GOODS-N), Sloan Digital Sky Survey (SDSS) and Groth fields using a new photometric system with 20 optical, contiguous ~300-Å filters plus the JHKs bands. The filter system is designed to optimize the effective photometric redshift depth of the survey, while having enough wavelength resolution for the identification of faint emission lines. The observations, carried out with the Calar Alto 3.5-m telescope using the wide-field optical camera Large Area Imager for Calar Alto (LAICA) and the near-infrared (NIR) instrument Omega-2000, represent a total of ~700 h of on-target science images. Here we present multicolour point-spread function (PSF) corrected photometry and photometric redshifts for ~438 000 galaxies, detected in synthetic F814W images. The catalogues are complete down to a magnitude I~24.5AB and cover an effective area of 2.79 deg2. Photometric zero-points were calibrated using stellar transformation equations and refined internally, using a new technique based on the highly robust photometric redshifts measured for emission-line galaxies. We calculate Bayesian photometric redshifts with the Bayesian Photometric Redshift (BPZ)2.0 code, obtaining a precision of δz/(1+zs)=1 per cent for I<22.5 and δz/(1+zs)=1.4 per cent for 22.5<I<24.5. The global n(z) distribution shows a mean redshift 〈z〉=0.56 for I<22.5 AB and 〈z〉=0.86 for I<24.5 AB. Given its depth and small cosmic variance, ALHAMBRA is a unique data set for galaxy evolution studies.
publishDate 2014
dc.date.none.fl_str_mv 2014
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 http://hdl.handle.net/11441/61127
https://doi.org/10.1093/mnras/stu387
url http://hdl.handle.net/11441/61127
https://doi.org/10.1093/mnras/stu387
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Monthly Notices of the Royal Astronomical Society, 441 (4), 2891-2922.
http://dx.doi.org/10.1093/mnras/stu387
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Oxford University Press
publisher.none.fl_str_mv Oxford University Press
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.300719

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