Infalling Groups and the Origin of Early-Type Galaxies

Details Infalling Groups and the Origin of Early-Type Galaxies Infalling Groups and the Origin of Early-Type Galaxies

Jul 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006hst..prop10994f&link_type=abstract

HST Proposal ID #10994. Cycle 15

Physics

Scientific paper

The creation of the cluster early-type galaxy sequence most likely occurs in groups, as mergers are possible in such environments. Recent results have shown that groups of galaxies at half of the Hubble time show a truncated red-sequence. We are surveying two small groups that will fall into a massive cluster by z=0, to determine the morphologies of the group members. The truncation of the red sequence should show up in the morphology-density relation and in an increased merger fraction.

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