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

Journal Article · Tue Oct 20 00:00:00 EDT 2015 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/812/2/138· OSTI ID:22518763

Foltz, R.; Wilson, G.; DeGroot, A. ^[1]; Rettura, A. ^[2]; Muzzin, A. ^[3]; Lidman, C. ^[4]; Demarco, R. ^[5]; Nantais, Julie ^[6]

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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. Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge, CB3 0HA (United Kingdom)
4. Australian Astronomical Observatory, P.O. Box 915, North Ryde NSW 1670 (Australia)
5. Department of Astronomy, Universidad de Concepcion, Barrio Universitario. Casilla 160-C, Concepcion (Chile)
6. Grupo Astronomi´a, Departamento de Ciencias Fi´sicas, Universidad Andrés Bello, República 220, Santiago (Chile)

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.

• OSTI ID: 22518763
• Journal Information: Astrophysical Journal, Vol. 812, Issue 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
BARYONS
COLOR
COMPARATIVE EVALUATIONS
GALAXIES
GALAXY CLUSTERS
MASS
PHOTOMETRY
RED SHIFT
STARS
X RADIATION