Tracing cosmic evolution with the Coma cluster

Abstract

We summarize here the first results of a new spectroscopic survey of galaxies in the Coma cluster with -20.5 < M_B < -14. Differences between the last epoch of star formation (SF) activity in S0 and elliptical galaxies are discussed. Furthermore, we show that about half of all galaxies without present-day SF display signs of activity at z < 1-2. Systematic trends of most recent SF epoch with galaxy luminosity are presented.

4 pages, to appear in the proceedings of the meeting "Tracing cosmic evolution with galaxy clusters" (Sesto Pusteria 3-6 July 2001), ASP Conference Series in press