The goal is to measure precisely the rate of change of the cluster galaxy morphological fractions over the last 2/3 of a Hubble time. These changes in morphological fraction provide powerful constraints on models of galaxy and structure formation in rich clusters of galaxies--the most massive, virialized regions in the universe.
Our first study has been in cluster MS1358+62 at z=0.33, where we find that the mean values of B/T as a function of galaxy morphological type are very similar to their counterparts in the local universe. A paper is currently in preparation on the topic.
Dr. Michael A. Pahre
Harvard-Smithsonian Center for Astrophysics
60 Garden Street, Mail Stop 20
Cambridge, MA     02138
Office: (617) 495-7073
FAX: (617) 495-7467
Last update: 1999 March 10