Radio galaxy selected clusters at high redshift and associated ERO overdensities

Abstract

Galaxy clusters at high redshift present a superb opportunity to study galaxy evolution, with large galaxy samples at fixed distances. Several lines of evidence point towards large formation redshifts and passive evolution for cluster ellipticals. At redshifts larger than z~0.8, this picture rests on data from only a handful of rich clusters. We have observed four potential clusters to sample sparser environments in a critical redshift range, 0.8 < z < 1.2. We compare the photometric evolution and radial density profiles in our clusters with more massive clusters studied in a similar manner. We also highlight the overdense ERO (I-K>5) population, significantly redder than the old elliptical population at the cluster redshift. We discuss the implications of our clusters at high redshift, and possible differences in environment from richer clusters at similar redshifts selected through X-ray or optical techniques.

13 pages, 7 figures, accepted in the Astronomical Journal, Oct2000 issue

References in corpus (7)

• A High Merger Fraction in the Rich Cluster MS1054-03 at z=0.83: Direct Evidence for Hierarchical Formation of Massive Galaxies
• An X-ray Selected Galaxy Cluster at z=1.26
• The Surface Density of Extremely Red Objects
• Extremely Red Objects in the Field of QSO 1213-0017: A Galaxy Concentration at z=1.31
• A Rich Cluster of Galaxies Near the Quasar B2 1335+28 at z=1.1: Color Distribution and Star-Formation Properties
• Color-Magnitude Sequence in the Clusters at z$\sim$1.2 near the Radio Galaxy 3C 324
• Radio galaxy selected clusters at high redshift and associated ERO overdensities

Cited by in corpus (22)

• The Diversity of Extremely Red Objects
• A Hubble Space Telescope Lensing Survey of X-ray Luminous Galaxy Clusters: II. A Search for Gravitationally Lensed EROs
• The Chandra Deep Field North Survey. IX. Extended X-ray Sources
• HST/WFPC2 Morphologies of K-selected Extremely Red Galaxies
• Extended X-ray emission around 4C 41.17 at z=3.8
• The Las Campanas Infrared Survey. III. The H-band Imaging Survey and the Near-Infrared and Optical Photometric Catalogs
• Discovery of a High-Redshift (z=0.96) Cluster of Galaxies Using a FIRST Wide-Angle Tailed Radio Source
• Radio-quiet quasar environments at 0.5 < z < 0.8
• The VIMOS Integral Field Unit: data reduction methods and quality assessment
• Overdensities of 24um Sources in the Vicinities of High-Redshift Radio Galaxies
• Overdensities of Extremely Red Objects in the Fields of High-Redshift Radio-Loud Quasars
• Very Red and Extremely Red Galaxies in the Fields of z ~ 1.5 Radio-Loud Quasars
• Search for sub-mm, mm and radio continuum emission from Extremely Red Objects
• Radio galaxy selected clusters at high redshift and associated ERO overdensities
• The Phoenix Deep Survey: the clustering and the environment of Extremely Red Objects
• Extremely Red Objects in Two Quasar Fields at z ~ 1.5
• Detection of a CMB decrement towards a cluster of mJy radiosources
• An Overdensity of Extremely Red Objects Around Faint Mid-IR galaxies
• Clustering and light profiles of galaxies in the environment of 20 Ultra Steep Spectrum Radio sources
• Powerful Radio Sources in the Southern Sky. I. Optical Identifications
• Selecting Clusters and Protoclusters via Stellar Mass Density: I. Method and tests on Mock HSC-SSP catalogs
• Searching for Clusters with SUMSS