A morphological study of galaxies in ZwCl0024+1652, a galaxy cluster at redshift z ∼ 0.4

ABSTRACT: he well-known cluster of galaxies ZwCl0024+1652 at z ∼ 0.4 lacks an in-depth morphological classification of its central region. While previous studies provide a visual classification of a patched area, we used the public code called galaxy Support Vector Machine GALSVM) and HST/ACS data a...

Descripción completa

Detalles Bibliográficos
Autores: Beyoro Amado, Zeleke, Povic, Mirjana, Sánchez Portal, Miguel, Tessema, S. B., Bongiovanni, Ángel, Cepa, Jordi, Cerviño, Miguel, González Serrano, José Ignacio|||0000-0003-0795-3026, Nadolny, Jakub, Pérez García, Ana María, Pérez Martínez, Ricardo, Pintos Castro, Irene
Tipo de recurso: artículo
Fecha de publicación:2019
País:España
Institución:Universidad de Cantabria (UC)
Repositorio:UCrea Repositorio Abierto de la Universidad de Cantabria
Idioma:inglés
OAI Identifier:oai:repositorio.unican.es:10902/18523
Acceso en línea:http://hdl.handle.net/10902/18523
Access Level:acceso abierto
Palabra clave:ZwCl0024+1652
Galaxy cluster
Galaxies
Morphology
Early-Type
LateType
GALSVM
Morphological fraction
id ES_fc31b76552cfeb343d36a5a26d2e9366
oai_identifier_str oai:repositorio.unican.es:10902/18523
network_acronym_str ES
network_name_str España
repository_id_str
spelling A morphological study of galaxies in ZwCl0024+1652, a galaxy cluster at redshift z ∼ 0.4Beyoro Amado, ZelekePovic, MirjanaSánchez Portal, MiguelTessema, S. B.Bongiovanni, ÁngelCepa, JordiCerviño, MiguelGonzález Serrano, José Ignacio|||0000-0003-0795-3026Nadolny, JakubPérez García, Ana MaríaPérez Martínez, RicardoPintos Castro, IreneZwCl0024+1652Galaxy clusterGalaxiesMorphologyEarly-TypeLateTypeGALSVMMorphological fractionABSTRACT: he well-known cluster of galaxies ZwCl0024+1652 at z ∼ 0.4 lacks an in-depth morphological classification of its central region. While previous studies provide a visual classification of a patched area, we used the public code called galaxy Support Vector Machine GALSVM) and HST/ACS data as well as the WFP2 master catalogue to automatically classify all cluster members up to 1 Mpc. GALSVM analyses galaxy morphologies through support vector machine (SVM). From the 231 cluster galaxies, we classified 97 as early types (ETs) and 83 as late types (LTs). The remaining 51 stayed unclassified (or undecided). By cross-matching our results with the existing visual classification, we found an agreement of 81 per cent. In addition to previous Zwcl0024 morphological classifications, 121 of our galaxies were classified for the first time in this work. In addition, we tested the location of classified galaxies on the standard morphological diagrams, colour–colour and colour–magnitude diagrams. Out of all cluster members, ∼20 per cent are emission-line galaxies, taking into account previous GLACE results. We have verified that the ET fraction is slightly higher near the cluster core and decreases with the clustercentric distance, while the opposite trend has been observed for LT galaxies. We found a higher fraction of ETs (54 per cent) than LTs (46 per cent) throughout the analysed central region, as expected. In addition, we analysed the correlation between the five morphological parameters (Abraham concentration, Bershady–Concelice concentration, asymmetry, Gini, and M20 moment of light) and the clustercentric distance, without finding a clear trend. Finally, as a result of our work, the morphological catalogue of 231 galaxies containing all the measured parameters and the final classification is available in the electronic form of this paper.MP also acknowledges support from the Spanish MINECO under projects AYA2013-42227-P and AYA2016-76682-C3-1-P- This work was supported by the Spanish Ministry of Economy and Competitiveness (MINECO) under the grants AYA2014-58861-C3-2-P, AYA2014-58861-C3-3-P, AYA2017-88007-C3-1-P, and AYA2017-88007-C3-2-P.Oxford University PressUniversidad de Cantabria20192019-05-01journal articlehttp://purl.org/coar/resource_type/c_6501NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/articlehttp://hdl.handle.net/10902/18523MNRAS 485, 1528?1545 (2019)reponame:UCrea Repositorio Abierto de la Universidad de Cantabriainstname:Universidad de Cantabria (UC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:repositorio.unican.es:10902/185232026-06-02T12:39:31Z
dc.title.none.fl_str_mv A morphological study of galaxies in ZwCl0024+1652, a galaxy cluster at redshift z ∼ 0.4
title A morphological study of galaxies in ZwCl0024+1652, a galaxy cluster at redshift z ∼ 0.4
spellingShingle A morphological study of galaxies in ZwCl0024+1652, a galaxy cluster at redshift z ∼ 0.4
Beyoro Amado, Zeleke
ZwCl0024+1652
Galaxy cluster
Galaxies
Morphology
Early-Type
LateType
GALSVM
Morphological fraction
title_short A morphological study of galaxies in ZwCl0024+1652, a galaxy cluster at redshift z ∼ 0.4
title_full A morphological study of galaxies in ZwCl0024+1652, a galaxy cluster at redshift z ∼ 0.4
title_fullStr A morphological study of galaxies in ZwCl0024+1652, a galaxy cluster at redshift z ∼ 0.4
title_full_unstemmed A morphological study of galaxies in ZwCl0024+1652, a galaxy cluster at redshift z ∼ 0.4
title_sort A morphological study of galaxies in ZwCl0024+1652, a galaxy cluster at redshift z ∼ 0.4
dc.creator.none.fl_str_mv Beyoro Amado, Zeleke
Povic, Mirjana
Sánchez Portal, Miguel
Tessema, S. B.
Bongiovanni, Ángel
Cepa, Jordi
Cerviño, Miguel
González Serrano, José Ignacio|||0000-0003-0795-3026
Nadolny, Jakub
Pérez García, Ana María
Pérez Martínez, Ricardo
Pintos Castro, Irene
author Beyoro Amado, Zeleke
author_facet Beyoro Amado, Zeleke
Povic, Mirjana
Sánchez Portal, Miguel
Tessema, S. B.
Bongiovanni, Ángel
Cepa, Jordi
Cerviño, Miguel
González Serrano, José Ignacio|||0000-0003-0795-3026
Nadolny, Jakub
Pérez García, Ana María
Pérez Martínez, Ricardo
Pintos Castro, Irene
author_role author
author2 Povic, Mirjana
Sánchez Portal, Miguel
Tessema, S. B.
Bongiovanni, Ángel
Cepa, Jordi
Cerviño, Miguel
González Serrano, José Ignacio|||0000-0003-0795-3026
Nadolny, Jakub
Pérez García, Ana María
Pérez Martínez, Ricardo
Pintos Castro, Irene
author2_role author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad de Cantabria
dc.subject.none.fl_str_mv ZwCl0024+1652
Galaxy cluster
Galaxies
Morphology
Early-Type
LateType
GALSVM
Morphological fraction
topic ZwCl0024+1652
Galaxy cluster
Galaxies
Morphology
Early-Type
LateType
GALSVM
Morphological fraction
description ABSTRACT: he well-known cluster of galaxies ZwCl0024+1652 at z ∼ 0.4 lacks an in-depth morphological classification of its central region. While previous studies provide a visual classification of a patched area, we used the public code called galaxy Support Vector Machine GALSVM) and HST/ACS data as well as the WFP2 master catalogue to automatically classify all cluster members up to 1 Mpc. GALSVM analyses galaxy morphologies through support vector machine (SVM). From the 231 cluster galaxies, we classified 97 as early types (ETs) and 83 as late types (LTs). The remaining 51 stayed unclassified (or undecided). By cross-matching our results with the existing visual classification, we found an agreement of 81 per cent. In addition to previous Zwcl0024 morphological classifications, 121 of our galaxies were classified for the first time in this work. In addition, we tested the location of classified galaxies on the standard morphological diagrams, colour–colour and colour–magnitude diagrams. Out of all cluster members, ∼20 per cent are emission-line galaxies, taking into account previous GLACE results. We have verified that the ET fraction is slightly higher near the cluster core and decreases with the clustercentric distance, while the opposite trend has been observed for LT galaxies. We found a higher fraction of ETs (54 per cent) than LTs (46 per cent) throughout the analysed central region, as expected. In addition, we analysed the correlation between the five morphological parameters (Abraham concentration, Bershady–Concelice concentration, asymmetry, Gini, and M20 moment of light) and the clustercentric distance, without finding a clear trend. Finally, as a result of our work, the morphological catalogue of 231 galaxies containing all the measured parameters and the final classification is available in the electronic form of this paper.
publishDate 2019
dc.date.none.fl_str_mv 2019
2019-05-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10902/18523
url http://hdl.handle.net/10902/18523
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.publisher.none.fl_str_mv Oxford University Press
publisher.none.fl_str_mv Oxford University Press
dc.source.none.fl_str_mv MNRAS 485, 1528?1545 (2019)
reponame:UCrea Repositorio Abierto de la Universidad de Cantabria
instname:Universidad de Cantabria (UC)
instname_str Universidad de Cantabria (UC)
reponame_str UCrea Repositorio Abierto de la Universidad de Cantabria
collection UCrea Repositorio Abierto de la Universidad de Cantabria
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869425399583211520
score 15,300719

Similares en LA Referencia