The Canada-France-Hawaii Telescope Legacy Survey: The Morphology-Density Relation of Galaxies out to z ~ 1

We study the relationships between galaxy total luminosity (M), morphology, color, and environment as a function of redshift. We use a magnitude-limited sample of 65,624 galaxies in the redshift range 0 2 to be "bulge-dominated" and n 2 number fractions at z = 0.1 agree well with those based on Sloan Digital Sky Survey galaxies. We find that the n > 2 galaxy number fraction is constant with redshift in the field. However, for overdense environments, this fraction is larger and increases toward lower redshifts, higher densities, and higher luminosities. Rest-frame color-magnitude diagrams show that the color distribution is bimodal out to our redshift limit of z ~ 1, with a prominent red sequence of galaxies at 0.2 1. For all environments, this fraction increases toward lower redshifts and higher luminosities. The red fraction within cluster-like regions changes 60% faster with redshift as compared to the field for galaxies with M < -19.5. Using, for the first time, observations across many cluster-field interfaces distributed over a single, large volume, we trace the large-scale morphology-density relation and the Butcher-Oemler effect over a period of almost 8 Gyr.