Two-dimensional multi-component photometric decomposition of CALIFA galaxies

We present a two-dimensional multi-component photometric decomposition of 404 galaxies from the Calar Alto Legacy Integral Field Area data release 3 (CALIFA-DR3). They represent all possible galaxies with no clear signs of interaction and not strongly inclined in the final CALIFA data release. Galax...

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Detalles Bibliográficos
Autores: Catalán Torrecilla, Cristina, Marino, Raffaella Anna, otros, ...
Tipo de recurso: artículo
Fecha de publicación:2017
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/17818
Acceso en línea:https://hdl.handle.net/20.500.14352/17818
Access Level:acceso abierto
Palabra clave:52
Digital sky survey
Field area survey
Surface-brightness profiles
Stellar disk truncations
Double-barred galaxies
Public data release
Spiral galaxies
Elliptic galaxies
Spitzer survey
Quantitative morphology
Astrofísica
Astronomía (Física)
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oai_identifier_str oai:docta.ucm.es:20.500.14352/17818
network_acronym_str ES
network_name_str España
repository_id_str
spelling Two-dimensional multi-component photometric decomposition of CALIFA galaxiesCatalán Torrecilla, CristinaMarino, Raffaella Annaotros, ...52Digital sky surveyField area surveySurface-brightness profilesStellar disk truncationsDouble-barred galaxiesPublic data releaseSpiral galaxiesElliptic galaxiesSpitzer surveyQuantitative morphologyAstrofísicaAstronomía (Física)We present a two-dimensional multi-component photometric decomposition of 404 galaxies from the Calar Alto Legacy Integral Field Area data release 3 (CALIFA-DR3). They represent all possible galaxies with no clear signs of interaction and not strongly inclined in the final CALIFA data release. Galaxies are modelled in the g, r, and i Sloan Digital Sky Survey (SDSS) images including, when appropriate, a nuclear point source, bulge, bar, and an exponential or broken disc component. We use a human-supervised approach to determine the optimal number of structures to be included in the fit. The dataset, including the photometric parameters of the CALIFA sample, is released together with statistical errors and a visual analysis of the quality of each fit. The analysis of the photometric components reveals a clear segregation of the structural composition of galaxies with stellar mass. At high masses (log (M-*/M-circle dot) > 11), the galaxy population is dominated by galaxies modelled with a single Sersic or a bulge+disc with a bulge-to-total (B/T) luminosity ratio B/T > 0.2. At intermediate masses (9.5 < log (M-*/M-circle dot) < 11), galaxies described with bulge+disc but B/T < 0.2 are preponderant, whereas, at the low mass end (log (M-*/M-circle dot) < 9.5), the prevailing population is constituted by galaxies modelled with either pure discs or nuclear point sources+discs (i.e., no discernible bulge). We obtain that 57% of the volume corrected sample of disc galaxies in the CALIFA sample host a bar. This bar fraction shows a significant drop with increasing galaxy mass in the range 9.5 < log (M-*/M-circle dot) < 11.5. The analyses of the extended multi-component radial profile result in a volume-corrected distribution of 62%, 28%, and 10% for the so-called Type I (pure exponential), Type II (down-bending), and Type III (up-bending) disc profiles, respectively. These fractions are in discordance with previous findings. We argue that the different methodologies used to detect the breaks are the main cause for these differences.EDP ScienciesUniversidad Complutense de Madrid20172017-02-0120172017-02-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/17818reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/178182026-06-02T12:44:21Z
dc.title.none.fl_str_mv Two-dimensional multi-component photometric decomposition of CALIFA galaxies
title Two-dimensional multi-component photometric decomposition of CALIFA galaxies
spellingShingle Two-dimensional multi-component photometric decomposition of CALIFA galaxies
Catalán Torrecilla, Cristina
52
Digital sky survey
Field area survey
Surface-brightness profiles
Stellar disk truncations
Double-barred galaxies
Public data release
Spiral galaxies
Elliptic galaxies
Spitzer survey
Quantitative morphology
Astrofísica
Astronomía (Física)
title_short Two-dimensional multi-component photometric decomposition of CALIFA galaxies
title_full Two-dimensional multi-component photometric decomposition of CALIFA galaxies
title_fullStr Two-dimensional multi-component photometric decomposition of CALIFA galaxies
title_full_unstemmed Two-dimensional multi-component photometric decomposition of CALIFA galaxies
title_sort Two-dimensional multi-component photometric decomposition of CALIFA galaxies
dc.creator.none.fl_str_mv Catalán Torrecilla, Cristina
Marino, Raffaella Anna
otros, ...
author Catalán Torrecilla, Cristina
author_facet Catalán Torrecilla, Cristina
Marino, Raffaella Anna
otros, ...
author_role author
author2 Marino, Raffaella Anna
otros, ...
author2_role author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 52
Digital sky survey
Field area survey
Surface-brightness profiles
Stellar disk truncations
Double-barred galaxies
Public data release
Spiral galaxies
Elliptic galaxies
Spitzer survey
Quantitative morphology
Astrofísica
Astronomía (Física)
topic 52
Digital sky survey
Field area survey
Surface-brightness profiles
Stellar disk truncations
Double-barred galaxies
Public data release
Spiral galaxies
Elliptic galaxies
Spitzer survey
Quantitative morphology
Astrofísica
Astronomía (Física)
description We present a two-dimensional multi-component photometric decomposition of 404 galaxies from the Calar Alto Legacy Integral Field Area data release 3 (CALIFA-DR3). They represent all possible galaxies with no clear signs of interaction and not strongly inclined in the final CALIFA data release. Galaxies are modelled in the g, r, and i Sloan Digital Sky Survey (SDSS) images including, when appropriate, a nuclear point source, bulge, bar, and an exponential or broken disc component. We use a human-supervised approach to determine the optimal number of structures to be included in the fit. The dataset, including the photometric parameters of the CALIFA sample, is released together with statistical errors and a visual analysis of the quality of each fit. The analysis of the photometric components reveals a clear segregation of the structural composition of galaxies with stellar mass. At high masses (log (M-*/M-circle dot) > 11), the galaxy population is dominated by galaxies modelled with a single Sersic or a bulge+disc with a bulge-to-total (B/T) luminosity ratio B/T > 0.2. At intermediate masses (9.5 < log (M-*/M-circle dot) < 11), galaxies described with bulge+disc but B/T < 0.2 are preponderant, whereas, at the low mass end (log (M-*/M-circle dot) < 9.5), the prevailing population is constituted by galaxies modelled with either pure discs or nuclear point sources+discs (i.e., no discernible bulge). We obtain that 57% of the volume corrected sample of disc galaxies in the CALIFA sample host a bar. This bar fraction shows a significant drop with increasing galaxy mass in the range 9.5 < log (M-*/M-circle dot) < 11.5. The analyses of the extended multi-component radial profile result in a volume-corrected distribution of 62%, 28%, and 10% for the so-called Type I (pure exponential), Type II (down-bending), and Type III (up-bending) disc profiles, respectively. These fractions are in discordance with previous findings. We argue that the different methodologies used to detect the breaks are the main cause for these differences.
publishDate 2017
dc.date.none.fl_str_mv 2017
2017-02-01
2017
2017-02-01
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/20.500.14352/17818
url https://hdl.handle.net/20.500.14352/17818
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
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score 15.301603

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