Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/109589
COMPARTIR / EXPORTAR:
logo share SHARE logo core CORE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE

Invitar a revisión por pares abierta
Título

Multi-wavelength landscape of the young galaxy cluster RX J1257.2+4738 at z = 0.866. I. The infrared view

AutorPintos-Castro, Irene; Sánchez-Portal, Miguel; Cepa, Jordi; Santos, Joana S.; Altieri, B.; Pérez-Martínez, Ricardo; Alfaro, Emilio J. CSIC ORCID CVN ; Bongiovanni, Ángel; Coia, D.; Domínguez Sánchez, Helena CSIC ORCID; Ederoclite, Alessandro; González-Serrano, José Ignacio CSIC ORCID CVN ; Metcalfe, Leo; Oteo Gómez, Iván; Pérez-García, Ana M. CSIC ORCID CVN; Polednikova, Jana; Rawle, Timothy D.; Valtchanov, Iván
Palabras claveGalaxies: clusters: individual: RXJ1257.2+4738
Galaxies: evolution
Infrared: galaxies
Fecha de publicación2013
EditorEDP Sciences
CitaciónAstronomy and Astrophysics 558: A100 (2013)
Resumen[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.
Versión del editorhttp://dx.doi.org/10.1051/0004-6361/201321474
URIhttp://hdl.handle.net/10261/109589
DOI10.1051/0004-6361/201321474
Identificadoresdoi: 10.1051/0004-6361/201321474
issn: 0004-6361
e-issn: 1432-0746
Aparece en las colecciones: (IAA) Artículos
(IFCA) Artículos
(CAB) Artículos

Ficheros en este ítem:
Fichero Descripción Tamaño Formato
I. The infrared view.pdf4,12 MBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo

CORE Recommender

SCOPUSTM   
Citations

18
checked on 18-mar-2024

WEB OF SCIENCETM
Citations

14
checked on 24-feb-2024

Page view(s)

415
checked on 18-mar-2024

Download(s)

276
checked on 18-mar-2024

Google ScholarTM

Check

Altmetric

Altmetric


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.