Tracing Galaxy Evolution in Clusters and Groups at z≈1
Abstract
We present recent results on a comparative analysis of the evolution of the Color-Magnitude Relation (CMR) at z≈1 on a sample of eight clusters from the ACS (Advanced Camera for Surveys) Intermediate Cluster Survey. Our clusters have redshifts between z=0.8 and ≈1.3, and we also studied five galaxy groups at z=1.26. We find that the early-type CMR (red sequence) is already on place at these redshifts and that CMR parameters are constant over a large range of redshifts, with no significant evolution up to redshift z≈1.3.
- Publication:
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The Impact of HST on European Astronomy
- Pub Date:
- 2010
- DOI:
- 10.1007/978-90-481-3400-7_26
- Bibcode:
- 2010ASSP...15..137M
- Keywords:
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- Physics