Assigned ID: 723 ----- Attempting Submission 1 (Fri Feb 26 22:45:25 GMT 2010) ----- HST Phase I Proposal 723 (apt) successfully submitted. ----- Attempting Submission 2 (Fri Feb 26 23:01:50 GMT 2010) ----- Dry merging (i.e., merging without gas) is invoked in models of hiearchical galaxy formation as an important mode of galaxy assembly, necessary to reproduce the observed fractions and luminosities of galaxies in the red sequence. We propose to use HST and ancillary observations in the COSMOS field to measure the merger activity among red-sequence galaxies at 0.1 < z < 0.4. We will 1) examine the relationship between different classes of morphological merger signatures and residual star formation and 2) determine the relative contributions of various types of mergers (wet, dry, minor, merger). Both analyses will be carried out as a function of stellar mass.

UNRESOLVED STELLAR POPULATIONS AND GALAXY STRUCTURE 12 56746 false 0.0 0.0 false false false false false false SUPPORTED