Galaxy evolution in clusters from z=1 to z=0

Details Galaxy evolution in clusters from z=1 to z=0 Galaxy evolution in clusters from z=1 to z=0

2004-05-20

arxiv.org/abs/astro-ph/0405384v1

Astronomy and Astrophysics

Astrophysics

To appear in the proceedings of IAU Colloquium 195: "Outskirts of galaxy clusters: intense life in the suburbs", Torino, Italy

Scientific paper

10.1017/S174392130400078X

The XMM--LSS project is detecting distant clusters of low mass, quite comparable in mass to the ones in the local universe. This allows a direct comparison of galaxy properties at different redshifts in ``similar'' clusters. We present here first results on the evolution of the reddest galaxies in ~25 clusters/groups at ~0.3< z <~1.0 and for the whole galaxy population in the same clusters. The emerging picture from the current study is that the counterparts of present day clusters tend to show two or more distinct populations : a relatively old (z_f>2-5) population evolving passively together with a younger population, ostensibly responsible for the apparent brightening of the characteristic magnitudes, m*.

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