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

Abstract

We test for galactic conformity at $0.2<z<1.0$ to a projected distance of 5 Mpc using spectroscopic redshifts from the PRism MUlti-object Survey (PRIMUS). Our sample consists of $\sim 60,000$ galaxies in five separate fields covering a total of $\sim 5.5$ square degrees, which allows us to account for cosmic variance. We identify star-forming and quiescent "isolated primary" (i.e., central) galaxies using isolation criteria and cuts in specific star formation rate. We match the redshift and stellar mass distributions of these samples, to control for correlations between quiescent fraction and redshift and stellar mass. We detect a significant $(>3\sigma )$ one-halo conformity signal, or an excess of star-forming neighbors around star-forming central galaxies, of $\sim 5$% on scales of 0-1 Mpc and a $2.5\sigma$ two-halo signal of $\sim 1$% on scales of 1-3 Mpc. These signals are weaker than those detected in SDSS and are consistent with galactic conformity being the result of large-scale tidal fields and reflecting assembly bias. We also measure the star-forming fraction of central galaxies at fixed stellar mass as a function of large-scale environment and find that central galaxies are more likely to be quenched in overdense environments, independent of stellar mass. However, we find that environment does not affect the star formation efficiency of central galaxies, as long as they are forming stars. We test for redshift and stellar mass dependence of the conformity signal within our sample and show that large volumes and multiple fields are required at intermediate redshift to adequately account for cosmic variance.

19 pages, 12 figures

References in corpus (14)

• The UKIRT Infrared Deep Sky Survey (UKIDSS)
• Introducing the Illustris Project: Simulating the coevolution of dark and visible matter in the Universe
• The Cosmic Evolution Survey (COSMOS) -- Overview
• The imprints of primordial non-gaussianities on large-scale structure: scale dependent bias and abundance of virialized objects
• UltraVISTA: a new ultra-deep near-infrared survey in COSMOS
• PRIMUS: Constraints on Star Formation Quenching and Galaxy Merging, and the Evolution of the Stellar Mass Function From z=0-1
• Star formation in AEGIS field galaxies since z=1.1 . Staged galaxy formation, and a model of mass-dependent gas exhaustion
• Assembly bias in the clustering of dark matter haloes
• Halo assembly bias and its effects on galaxy clustering
• The Excursion Set Theory of Halo Mass Functions, Halo Clustering, and Halo Growth
• The DEEP2 Galaxy Redshift Survey: Evolution of the Color-Density Relation at 0.4 < z < 1.35
• Effects of Local Environment and Stellar Mass on Galaxy Quenching out to z~3
• Assessing Colour-dependent Occupation Statistics Inferred from Galaxy Group Catalogues
• The angular correlations of galaxies in the COSMOS field

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