A Confirmation of the Strong Clustering of Distant Red Galaxies at 2 < z <3

Abstract

Recent studies have shown that distant red galaxies (DRGs), which dominate the high-mass end of the galaxy population at z~2.5, are more strongly clustered than the population of blue star-forming galaxies at similar redshifts. However these studies have been severely hampered by the small sizes of fields having deep near-infrared imaging. Here we use the large UKIDSS Ultra Deep Survey to study the clustering of DRGs. The size and depth of this survey allows for an unprecedented measurement of the angular clustering of DRGs at 2<z_phot<3 and K<21. The correlation function shows the expected power law behavior, but with an apparent upturn at theta<~10". We deproject the angular clustering to infer the spatial correlation length, finding 10.6+-1.6 h^-1 Mpc. We use the halo occupation distribution framework to demonstrate that the observed strong clustering of DRGs is not consistent with standard models of galaxy clustering, confirming previous suggestions that were based on smaller samples. Inaccurate photometric redshifts could artificially enhance the observed clustering, however significant systematic redshift errors would be required to bring the measurements into agreement with the models. Another possibility is that the underlying assumption that galaxies interact with their large-scale environment only through halo mass is not valid, and that other factors drive the evolution of the oldest, most massive galaxies at z~2.

Accepted for publication in ApJ Letters

References in corpus (10)

• The hierarchical formation of the brightest cluster galaxies
• Assembly bias in the clustering of dark matter haloes
• Definitive Identification of the Transition between Small- to Large-Scale Clustering for Lyman Break Galaxies
• The Multiwavelength Survey by Yale-Chile (MUSYC): Deep Near-Infrared Imaging and the Selection of Distant Galaxies
• The rest-frame optical luminosity functions of galaxies at 2<z<3.5
• Measuring the Average Evolution of Luminous Galaxies at z<3: The Rest-frame Optical Luminosity Density, Spectral Energy Distribution, and Stellar Mass Density
• Clustering of K-selected Galaxies at 2<z<3.5: Evidence for a Color-Density Relation
• The Clustering Evolution of Distant Red Galaxies in the GOODS-MUSIC Sample
• Number counts and clustering properties of bright Distant Red Galaxies in the UKIDSS Ultra Deep Survey Early Data Release
• Assessing the Predictive Power of Galaxy Formation Models: A Comparison of Predicted and Observed Rest-Frame Optical Luminosity Functions at 2.0<z<3.3

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• Galaxy formation in the PLANCK cosmology - III. The high-redshift universe
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• Clustering of star-forming galaxies detected in mid-infrared with the Spitzer wide-area survey
• Linking galaxies to dark matter haloes at $z\sim 1$ : dependence of galaxy clustering on stellar mass and specific star formation rate
• Dark Energy Survey Year 3 Results: Deep Field Optical + Near-Infrared Images and Catalogue