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Title: EVIDENCE FOR THE UNIVERSALITY OF PROPERTIES OF RED-SEQUENCE GALAXIES IN X-RAY- AND RED-SEQUENCE-SELECTED CLUSTERS AT z ∼ 1

We study the slope, intercept, and scatter of the color–magnitude and color–mass relations for a sample of 10 infrared red-sequence-selected clusters at z ∼ 1. The quiescent galaxies in these clusters formed the bulk of their stars above z ≳ 3 with an age spread Δt ≳ 1 Gyr. We compare UVJ color–color and spectroscopic-based galaxy selection techniques, and find a 15% difference in the galaxy populations classified as quiescent by these methods. We compare the color–magnitude relations from our red-sequence selected sample with X-ray- and photometric-redshift-selected cluster samples of similar mass and redshift. Within uncertainties, we are unable to detect any difference in the ages and star formation histories of quiescent cluster members in clusters selected by different methods, suggesting that the dominant quenching mechanism is insensitive to cluster baryon partitioning at z ∼ 1.
Authors:
; ;  [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [6] ;  [7] ;  [8]
  1. Department of Physics and Astronomy, University of California Riverside, 900 University Avenue, Riverside, CA 92521 (United States)
  2. Infrared Processing and Analysis Center, California Institute of Technology, KS 314-6, Pasadena, CA 91125 (United States)
  3. Laboratoire AIM, IRFU/Service d’Astrophysique—CEA/DSM—CNRS—Université Paris Diderot, Bât. 709, CEA-Saclay, F-91191 Gif-sur-Yvette Cedex (France)
  4. Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge, CB3 0HA (United Kingdom)
  5. Australian Astronomical Observatory, P.O. Box 915, North Ryde NSW 1670 (Australia)
  6. Department of Astronomy, Universidad de Concepcion, Barrio Universitario. Casilla 160-C, Concepcion (Chile)
  7. Grupo Astronomi´a, Departamento de Ciencias Fi´sicas, Universidad Andrés Bello, República 220, Santiago (Chile)
  8. Dept of Astronomy and Astrophysics, University of Toronto, 50 Saint George Street, Toronto, ON M5S 3H4 (Canada)
Publication Date:
OSTI Identifier:
22518763
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 812; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; BARYONS; COLOR; COMPARATIVE EVALUATIONS; GALAXIES; GALAXY CLUSTERS; MASS; PHOTOMETRY; RED SHIFT; STARS; X RADIATION