Thursday, November 16, 2006, 12:30 pm, Pratt Conference Room
Galaxy Environments in DEEP2:
The Birth of the Red Sequence
Michael Cooper (UC Berkeley)
| By obtaining a data set comparable in size and nature to recent generations of local surveys, the DEEP2 Galaxy Redshift Survey has made possible the study of the relationships between galaxy properties and local environment at z ~ 1. Using the DEEP2 data set, I will present analysis that focuses on the evolution of the color-density relation at intermediate redshift, with results that have direct implications regarding the color dependence of clustering among L* galaxies at higher redshift and that provide evidence that the build-up of galaxies on the red sequence has occured preferentially in overdense environments at intermediate redshifts (z < 1.5). Lastly, I will present the discovery of a population of bright, blue galaxies in dense environments at z ~ 1, a population of galaxies that could be the precursors of some local massive red-sequence members. |
