Assigned ID: 86 ----- Submission 1 (Thu Jan 20 18:39:22 GMT 2005) ----- This is an archival project to study the structural properties of S0 galaxies as a function of redshift. S0 galaxies divide into those with bulge+disk structure (classic S0's) and those composed of a pure exponential disk structure (lenticulars). While studying the structural properties of the blue Butcher-Oemler population in distant clusters, we discovered that intermediate redshifts clusters are rich in B+D type S0's, but in nearby clusters the S0 population is dominated by lenticulars. The hypothesis to be tested is that B+D S0's are stripped of their disks at intermediate redshifts to become ellipticals, while the blue population fades into lenticulars. Secondary goals are to trace the structural parameters of the red population with redshift, compare structure parameters with morphological classifications and select candidates for kinematic studies. This study is the structural equivalent of morphological studies where the galaxy's surface brightness profile is used to classify systems rather than the Hubble scheme.

GALAXIES 12 14000.00 false 0.0 false false false false false SUPPORTED