INVESTIGADORES
MURIEL Hernan
artículos
Título:
On the relationship between environment and galaxy properties in clusters of galaxies
Autor/es:
MARTÍNEZ, HÉCTOR J.; COENDA, VALERIA; MURIEL, HERNÁN
Revista:
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Año: 2008 vol. 391 p. 585 - 590
ISSN:
0035-8711
Resumen:
We study the correlation between different properties of bright (L >
L*) galaxies in clusters and the environment in the Sloan Digital Sky
Survey (SDSS). Samples of clusters of galaxies used in this paper are
those selected by Coenda & Muriel that are drawn from the Popesso et
al. and Koester et al. samples. Galaxies in these clusters have been
identified in the main Galaxy sample of the Fifth Data Release (DR5) of
SDSS. We analyse which galaxy properties correlate best with either
cluster mass or cluster-centric distance using the technique by Blanton
et al. We find that galaxy properties do not clearly depend on cluster
mass for clusters more massive than M ~
1014Msolar. On the other hand, galaxy properties
correlate with cluster-centric distance. The property most affected by
the cluster-centric distance is g - r colour, closely followed by the u
- r colour. These results are irrespective of the cluster selection
criteria. The two samples of clusters were identified based on the X-ray
emission and the galaxy colours, respectively. Moreover, the parameter
that best predicts environment (i.e. cluster-centric distance) is the
same found by Martínez & Muriel for groups of galaxies and
Blanton et al. for the local density of field galaxies.