Multi-wavelength landscape of the young galaxy cluster RX J1257.2+4738 at z = 0.866. I. The infrared view
[Context]: Many studies have shown how galaxy properties (e.g. colours, morphology, star-forming (SF) activity, active galactic nuclei population) change not only with redshift, but also with local galaxy density, revealing the important effect of the stellar/halo mass and the environment in the evo...
| Autores: | , , , , , , , , , , , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2013 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/109589 |
| Acceso en línea: | http://hdl.handle.net/10261/109589 |
| Access Level: | acceso abierto |
| Palabra clave: | Galaxies: clusters: individual: RXJ1257.2+4738 Galaxies: evolution Infrared: galaxies |
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Multi-wavelength landscape of the young galaxy cluster RX J1257.2+4738 at z = 0.866. I. The infrared viewPintos-Castro, IreneSánchez-Portal, MiguelCepa, JordiSantos, Joana S.Altieri, B.Pérez-Martínez, RicardoAlfaro, Emilio J.Bongiovanni, ÁngelCoia, D.Domínguez Sánchez, HelenaEderoclite, AlessandroGonzález-Serrano, José IgnacioMetcalfe, LeoOteo Gómez, IvánPérez-García, Ana M.Polednikova, JanaRawle, Timothy D.Valtchanov, IvánGalaxies: clusters: individual: RXJ1257.2+4738Galaxies: evolutionInfrared: galaxies[Context]: Many studies have shown how galaxy properties (e.g. colours, morphology, star-forming (SF) activity, active galactic nuclei population) change not only with redshift, but also with local galaxy density, revealing the important effect of the stellar/halo mass and the environment in the evolution of galaxies. A detailed analysis of the star formation activity in a representative sample of clusters will help us to understand the physical processes that cause the observed changes. [Aims]: We performed a thorough analysis of the star formation activity in the young massive galaxy cluster RX J1257+4738 at z = 0.866, with emphasis on the relationship between the local environment of the cluster galaxies and their star formation activity. We present an optical and infrared (IR) study that benefited from the large amount of data available for this cluster, including new OSIRIS/GTC and Herschel imaging observations. [Methods]: Using a multi-wavelength catalogue from the optical to the near-infrared, we measured photometric redshifts through a χ2 spectral energy distribution fitting procedure. We implemented a reliable and carefully chosen cluster membership selection criterion including Monte Carlo simulations and derived a sample of 292 reliable cluster member galaxies for which we measured the following properties: optical colours, stellar masses, ages, ultraviolet luminosities and local densities. Using the MIPS 24 μm and Herschel data, we measured total IR luminosities and star formation rates (SFRs). [Results]: Of the sample of 292 cluster galaxies, 38 show far-infrared (FIR) emission with an SFR between 0.5 and 45 M⊙ yr-1. The spatial distribution of the FIR emitters within the cluster density map and the filament-like overdensities observed suggest that RX J1257 is not virialised, but is in the process of assembly. The average star formation as a function of the cluster environment parametrised by the local density of galaxies does not show any clear trend. However, the fraction of SF galaxies unveils that the cluster intermediate-density regions is preferred for the SF activity to enhance, since we observe a significant increase of the FIR-emitter fraction in this environment. The analysis of the extinction distributions of the optically red and blue SF galaxies supports the assumption of the red SF galaxies as a dusty population.This research has been supported by the Spanish Ministry of Economy and Competitiveness (MINECO) under the grant AYA2011-29517-C03-01. We acknowledge support from the Faculty of the European Space Astronomy Centre (ESAC).Peer ReviewedEDP SciencesEuropean Space Astronomy CentreMinisterio de Economía y Competitividad (España)2015201520132015info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/109589reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1051/0004-6361/201321474info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1095892026-05-22T06:33:51Z |
| dc.title.none.fl_str_mv |
Multi-wavelength landscape of the young galaxy cluster RX J1257.2+4738 at z = 0.866. I. The infrared view |
| title |
Multi-wavelength landscape of the young galaxy cluster RX J1257.2+4738 at z = 0.866. I. The infrared view |
| spellingShingle |
Multi-wavelength landscape of the young galaxy cluster RX J1257.2+4738 at z = 0.866. I. The infrared view Pintos-Castro, Irene Galaxies: clusters: individual: RXJ1257.2+4738 Galaxies: evolution Infrared: galaxies |
| title_short |
Multi-wavelength landscape of the young galaxy cluster RX J1257.2+4738 at z = 0.866. I. The infrared view |
| title_full |
Multi-wavelength landscape of the young galaxy cluster RX J1257.2+4738 at z = 0.866. I. The infrared view |
| title_fullStr |
Multi-wavelength landscape of the young galaxy cluster RX J1257.2+4738 at z = 0.866. I. The infrared view |
| title_full_unstemmed |
Multi-wavelength landscape of the young galaxy cluster RX J1257.2+4738 at z = 0.866. I. The infrared view |
| title_sort |
Multi-wavelength landscape of the young galaxy cluster RX J1257.2+4738 at z = 0.866. I. The infrared view |
| dc.creator.none.fl_str_mv |
Pintos-Castro, Irene Sánchez-Portal, Miguel Cepa, Jordi Santos, Joana S. Altieri, B. Pérez-Martínez, Ricardo Alfaro, Emilio J. Bongiovanni, Ángel Coia, D. Domínguez Sánchez, Helena Ederoclite, Alessandro González-Serrano, José Ignacio Metcalfe, Leo Oteo Gómez, Iván Pérez-García, Ana M. Polednikova, Jana Rawle, Timothy D. Valtchanov, Iván |
| author |
Pintos-Castro, Irene |
| author_facet |
Pintos-Castro, Irene Sánchez-Portal, Miguel Cepa, Jordi Santos, Joana S. Altieri, B. Pérez-Martínez, Ricardo Alfaro, Emilio J. Bongiovanni, Ángel Coia, D. Domínguez Sánchez, Helena Ederoclite, Alessandro González-Serrano, José Ignacio Metcalfe, Leo Oteo Gómez, Iván Pérez-García, Ana M. Polednikova, Jana Rawle, Timothy D. Valtchanov, Iván |
| author_role |
author |
| author2 |
Sánchez-Portal, Miguel Cepa, Jordi Santos, Joana S. Altieri, B. Pérez-Martínez, Ricardo Alfaro, Emilio J. Bongiovanni, Ángel Coia, D. Domínguez Sánchez, Helena Ederoclite, Alessandro González-Serrano, José Ignacio Metcalfe, Leo Oteo Gómez, Iván Pérez-García, Ana M. Polednikova, Jana Rawle, Timothy D. Valtchanov, Iván |
| author2_role |
author author author author author author author author author author author author author author author author author |
| dc.contributor.none.fl_str_mv |
European Space Astronomy Centre Ministerio de Economía y Competitividad (España) |
| dc.subject.none.fl_str_mv |
Galaxies: clusters: individual: RXJ1257.2+4738 Galaxies: evolution Infrared: galaxies |
| topic |
Galaxies: clusters: individual: RXJ1257.2+4738 Galaxies: evolution Infrared: galaxies |
| description |
[Context]: Many studies have shown how galaxy properties (e.g. colours, morphology, star-forming (SF) activity, active galactic nuclei population) change not only with redshift, but also with local galaxy density, revealing the important effect of the stellar/halo mass and the environment in the evolution of galaxies. A detailed analysis of the star formation activity in a representative sample of clusters will help us to understand the physical processes that cause the observed changes. [Aims]: We performed a thorough analysis of the star formation activity in the young massive galaxy cluster RX J1257+4738 at z = 0.866, with emphasis on the relationship between the local environment of the cluster galaxies and their star formation activity. We present an optical and infrared (IR) study that benefited from the large amount of data available for this cluster, including new OSIRIS/GTC and Herschel imaging observations. [Methods]: Using a multi-wavelength catalogue from the optical to the near-infrared, we measured photometric redshifts through a χ2 spectral energy distribution fitting procedure. We implemented a reliable and carefully chosen cluster membership selection criterion including Monte Carlo simulations and derived a sample of 292 reliable cluster member galaxies for which we measured the following properties: optical colours, stellar masses, ages, ultraviolet luminosities and local densities. Using the MIPS 24 μm and Herschel data, we measured total IR luminosities and star formation rates (SFRs). [Results]: Of the sample of 292 cluster galaxies, 38 show far-infrared (FIR) emission with an SFR between 0.5 and 45 M⊙ yr-1. The spatial distribution of the FIR emitters within the cluster density map and the filament-like overdensities observed suggest that RX J1257 is not virialised, but is in the process of assembly. The average star formation as a function of the cluster environment parametrised by the local density of galaxies does not show any clear trend. However, the fraction of SF galaxies unveils that the cluster intermediate-density regions is preferred for the SF activity to enhance, since we observe a significant increase of the FIR-emitter fraction in this environment. The analysis of the extinction distributions of the optically red and blue SF galaxies supports the assumption of the red SF galaxies as a dusty population. |
| publishDate |
2013 |
| dc.date.none.fl_str_mv |
2013 2015 2015 2015 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article http://purl.org/coar/resource_type/c_6501 Publisher's version info:eu-repo/semantics/publishedVersion |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/10261/109589 |
| url |
http://hdl.handle.net/10261/109589 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
http://dx.doi.org/10.1051/0004-6361/201321474 |
| dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess |
| eu_rights_str_mv |
openAccess |
| dc.publisher.none.fl_str_mv |
EDP Sciences |
| publisher.none.fl_str_mv |
EDP Sciences |
| dc.source.none.fl_str_mv |
reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC instname:Consejo Superior de Investigaciones Científicas (CSIC) |
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Consejo Superior de Investigaciones Científicas (CSIC) |
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DIGITAL.CSIC. Repositorio Institucional del CSIC |
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DIGITAL.CSIC. Repositorio Institucional del CSIC |
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1869413060529094656 |
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15,81155 |