CLUES ON THE EVOLUTION OF CLUSTER GALAXIES FROM THE ANALYSIS OF THEIR ORBITAL ANISOTROPIES

摘要

We study the evolution of galaxies in clusters by the analysis of a sample of ～ 3000 galaxies, members of 59 clusters from the ESO Nearby Abell Cluster Survey (ENACS, Katgert et al. 1998), for which redshifts, JR-band magnitudes, as well as morphologies are available (Thomas 2002; Biviano et al. 2002, B02 hereafter, and references therein).