A journey from the outskirts to the cores of groups: I. Color-and mass-segregation in 20K-zCOSMOS groups

Full list of authors: Presotto, V.; Iovino, A.; Scodeggio, M.; Cucciati, O.; Knobel, C.; Bolzonella, M.; Oesch, P.; Finoguenov, A.; Tanaka, M.; Kovač, K.; Peng, Y.; Zamorani, G.; Bardelli, S.; Pozzetti, L.; Kampczyk, P.; López-Sanjuan, C.; Vergani, D.; Zucca, E.; Tasca, L. A. M.; Carollo, C. M.; Con...

Descripción completa

Detalles Bibliográficos
Autores: Presotto, V., Pérez Montero, Enrique
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2012
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/413151
Acceso en línea:http://hdl.handle.net/10261/413151
Access Level:acceso abierto
Palabra clave:Cosmology: observations
Galaxies: evolution
Galaxies: groups: general
id ES_a98d88d4e07f7eb8d218b8977f74fd87
oai_identifier_str oai:digital.csic.es:10261/413151
network_acronym_str ES
network_name_str España
repository_id_str
dc.title.none.fl_str_mv A journey from the outskirts to the cores of groups: I. Color-and mass-segregation in 20K-zCOSMOS groups
title A journey from the outskirts to the cores of groups: I. Color-and mass-segregation in 20K-zCOSMOS groups
spellingShingle A journey from the outskirts to the cores of groups: I. Color-and mass-segregation in 20K-zCOSMOS groups
Presotto, V.
Cosmology: observations
Galaxies: evolution
Galaxies: groups: general
title_short A journey from the outskirts to the cores of groups: I. Color-and mass-segregation in 20K-zCOSMOS groups
title_full A journey from the outskirts to the cores of groups: I. Color-and mass-segregation in 20K-zCOSMOS groups
title_fullStr A journey from the outskirts to the cores of groups: I. Color-and mass-segregation in 20K-zCOSMOS groups
title_full_unstemmed A journey from the outskirts to the cores of groups: I. Color-and mass-segregation in 20K-zCOSMOS groups
title_sort A journey from the outskirts to the cores of groups: I. Color-and mass-segregation in 20K-zCOSMOS groups
dc.creator.none.fl_str_mv Presotto, V.
Pérez Montero, Enrique
author Presotto, V.
author_facet Presotto, V.
Pérez Montero, Enrique
author_role author
author2 Pérez Montero, Enrique
author2_role author
dc.contributor.none.fl_str_mv Istituto Nazionale di Astrofisica
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Cosmology: observations
Galaxies: evolution
Galaxies: groups: general
topic Cosmology: observations
Galaxies: evolution
Galaxies: groups: general
description Full list of authors: Presotto, V.; Iovino, A.; Scodeggio, M.; Cucciati, O.; Knobel, C.; Bolzonella, M.; Oesch, P.; Finoguenov, A.; Tanaka, M.; Kovač, K.; Peng, Y.; Zamorani, G.; Bardelli, S.; Pozzetti, L.; Kampczyk, P.; López-Sanjuan, C.; Vergani, D.; Zucca, E.; Tasca, L. A. M.; Carollo, C. M.; Contini, T.; Kneib, J.-P.; Le Fèvre, O.; Lilly, S.; Mainieri, V.; Renzini, A.; Bongiorno, A.; Caputi, K.; de la Torre, S.; de Ravel, L.; Franzetti, P.; Garilli, B.; Lamareille, F.; Le Borgne, J.-F.; Le Brun, V.; Maier, C.; Mignoli, M.; Pellò, R.; Perez-Montero, E.; Ricciardelli, E.; Silverman, J. D.; Tresse, L.; Barnes, L.; Bordoloi, R.; Cappi, A.; Cimatti, A.; Coppa, G.; Koekemoer, A. M.; McCracken, H. J.; Moresco, M.; Nair, P.; Welikala, N
publishDate 2012
dc.date.none.fl_str_mv 2012
2026
2026
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/10261/413151
url http://hdl.handle.net/10261/413151
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1051/0004-6361/201118293
Sí
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)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869416030891147264
spelling A journey from the outskirts to the cores of groups: I. Color-and mass-segregation in 20K-zCOSMOS groupsPresotto, V.Pérez Montero, EnriqueCosmology: observationsGalaxies: evolutionGalaxies: groups: generalFull list of authors: Presotto, V.; Iovino, A.; Scodeggio, M.; Cucciati, O.; Knobel, C.; Bolzonella, M.; Oesch, P.; Finoguenov, A.; Tanaka, M.; Kovač, K.; Peng, Y.; Zamorani, G.; Bardelli, S.; Pozzetti, L.; Kampczyk, P.; López-Sanjuan, C.; Vergani, D.; Zucca, E.; Tasca, L. A. M.; Carollo, C. M.; Contini, T.; Kneib, J.-P.; Le Fèvre, O.; Lilly, S.; Mainieri, V.; Renzini, A.; Bongiorno, A.; Caputi, K.; de la Torre, S.; de Ravel, L.; Franzetti, P.; Garilli, B.; Lamareille, F.; Le Borgne, J.-F.; Le Brun, V.; Maier, C.; Mignoli, M.; Pellò, R.; Perez-Montero, E.; Ricciardelli, E.; Silverman, J. D.; Tresse, L.; Barnes, L.; Bordoloi, R.; Cappi, A.; Cimatti, A.; Coppa, G.; Koekemoer, A. M.; McCracken, H. J.; Moresco, M.; Nair, P.; Welikala, NContext. Studying the evolution of galaxies located within groups may have important implications for our understanding of the global evolution of the galaxy population as a whole. The fraction of galaxies bound in groups at z ∼ 0 is as high as 60% and therefore any mechanism (among the many suggested) that could quench star formation when a galaxy enters group environment would be an important driver for galaxy evolution.Aims. Using the group catalog obtained from zCOSMOS spectroscopic data and the complementary photometric data from the COSMOS survey, we explore segregation effects occurring in groups of galaxies at intermediate/high redshifts. Our aim is to reveal if, and how significantly, group environment affects the evolution of infalling galaxies.Methods. We built two composite groups at intermediate (0.2 ≤ z ≤ 0.45) and high (0.45 < z ≤ 0.8) redshifts, and we divided the corresponding composite group galaxies into three samples according to their distance from the group center. The samples roughly correspond to galaxies located in a group's inner core, intermediate, and infall region. We explored how galaxy stellar masses and colors-working in narrow bins of stellar masses-vary as a function of the galaxy distance from the group center.Results. We found that the most massive galaxies in our sample (log(M gal/M ⊙) ≥ 10.6) do not display any strong group-centric dependence of the fractions of red/blue objects. For galaxies of lower masses (9.8 ≤ log(M gal/M ⊙) ≤ 10.6) there is a radial dependence in the changing mix of red and blue galaxies. This dependence is most evident in poor groups, whereas richer groups do not display any obvious trend of the blue fraction. Interestingly, mass segregation shows the opposite behavior: it is visible only in rich groups, while poorer groups have a a constant mix of galaxy stellar masses as a function of radius.Conclusions. These findings can be explained in a simple scenario where color-and mass-segregation originate from different physical processes. While dynamical friction is the obvious cause for establishing mass segregation, both starvation and galaxy-galaxy collisions are plausible mechanisms to quench star formation in groups at a faster rate than in the field. In poorer groups the environmental effects are caught in action superimposed to secular galaxy evolution. Their member galaxies display increasing blue fractions when moving from the group center to more external regions, presumably reflecting the recent accretion history of these groups. © 2012 ESO.We are grateful to De Lucia, G., Girardi, M. and Andreon, S. for useful discussions and comments. V.P. acknowledges support from INAF- OAB Ph.D. Grant.Peer reviewedEDP SciencesIstituto Nazionale di AstrofisicaConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202620262012info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/413151reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1051/0004-6361/201118293Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/4131512026-05-22T06:33:51Z
score 15,81155

Similares en LA Referencia