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PRIMUS: One- and Two-halo Galactic Conformity at 0.2 < z < 1

Citation:

Berti AM, Coil AL, Behroozi PS, Eisenstein DJ, Bray AD, Cool RJ, Moustakas J. PRIMUS: One- and Two-halo Galactic Conformity at 0.2 < z < 1. The Astrophysical Journal. 2017;834.

Date Published:

January 1, 2017

Abstract:

We test for galactic conformity at 0.2< z< 1.0 to a projecteddistance of 5 Mpc using spectroscopic redshifts from the PRismMUlti-object Survey (PRIMUS). Our sample consists of ˜60,000galaxies in five separate fields covering a total of ˜5.5 squaredegrees, which allows us to account for cosmic variance. We identifystar-forming and quiescent “isolated primary” (I.e.,central) galaxies using isolation criteria and cuts in specific starformation rate. We match the redshift and stellar mass distributions ofthese samples to control for correlations between quiescent fraction andredshift and stellar mass. We detect a significant (>3σ)one-halo conformity signal, or an excess of star-forming neighbors

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