Volume 445, Number 1, January I 2006
|Page(s)||51 - 58|
|Section||Cosmology (including clusters of galaxies)|
|Published online||13 December 2005|
The faint-end of the galaxy luminosity function in groups
Departamento de Astronomía y Astrofísica, Pontificia Universidad Católica de Chile, Casilla 306, Santiago 22, Chile e-mail: firstname.lastname@example.org
2 Grupo de Investigaciones en Astronomía Teórica y Experimental (IATE), Observatorio Astronómico de Córdoba, UNC, and Consejo Nacional de Investigaciones Científicas y Tecnológicas. (CONICET), Argentina
Accepted: 8 September 2005
We compute the galaxy luminosity function in spectroscopically selected nearby groups and clusters. Our sample comprises 728 systems extracted from the third release of the Sloan Digital Sky Survey in the redshift range with virial mass range . To compute the galaxy luminosity function, we apply a statistical background subtraction method following usually adopted techniques. In the r band, the composite galaxy luminosity function shows a slope in the bright–end, and an upturn of the slope in the faint–end, , to slopes . We find that this feature is present also in the and z bands, and for all explored group subsamples, irrespective of the group mass, number of members, integrated color or the presence of a hot intra-cluster gas associated to X-ray emission.
Key words: methods: statistical / galaxies: clusters: general / galaxies: luminosity function, mass function
© ESO, 2005
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.