The DEEP2 Galaxy Redshift Survey: The Relationship between Galaxy Properties and Environment at z 1

Details The DEEP2 Galaxy Redshift Survey: The Relationship between Galaxy Properties and Environment at z 1 The DEEP2 Galaxy Redshift Survey: The Relationship between Galaxy Properties and Environment at z 1

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...207.8015c&link_type=abstract

American Astronomical Society Meeting 207, #80.15; Bulletin of the American Astronomical Society, Vol. 37, p.1299

Astronomy and Astrophysics

Astronomy

Scientific paper

We study the mean environment of galaxies in the DEEP2 Galaxy Redshift Survey as a function of rest-frame color, luminosity, and [OII] equivalent width. The local galaxy overdensity for >14,000 galaxies at 0.75 < z < 1.35 is estimated using the projected 3rd-nearest-neighbor surface density. Of the galaxy properties studied, mean environment is found to depend most strongly on galaxy color; all major features of the correlation between mean overdensity and rest-frame color observed in the local universe were already in place at z 1. In contrast to local results, we find a substantial slope in the mean dependence of environment on luminosity for blue, star-forming galaxies at z 1, with brighter blue galaxies found on average in regions of greater overdensity. We conclude by addressing the roles of galaxy clusters and groups in establishing the observed correlations between environment and galaxy properties at high redshift. This work was supported by funding from National Science Foundation (NSF) grants AST 00-71198 and AST 00-71048.

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