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Title: The XXL survey. V. Detection of the Sunyaev-Zel'dovich effect of the redshift 1.9 galaxy cluster XLSSU J021744.1–034536 with CARMA

We report the detection of the Sunyaev-Zel'dovich (SZ) effect of galaxy cluster XLSSU J021744.1–034536, using 30 GHz Combined Array for Research in Millimeter-wave Astronomy (CARMA) data. This cluster was discovered via its extended X-ray emission in the XMM- Newton Large Scale Structure survey, the precursor to the XXL survey. It has a photometrically determined redshift z=1.91{sub −0.21}{sup +0.19}, making it among the most distant clusters known, and nominally the most distant for which the SZ effect has been measured. The spherically integrated Comptonization is Y {sub 500} = (3.0 ± 0.4) × 10{sup –12}, a measurement that is relatively insensitive to assumptions regarding the size and redshift of the cluster, as well as the background cosmology. Using a variety of locally calibrated cluster scaling relations extrapolated to z ∼ 2, we estimate a mass M {sub 500} ∼ (1-2) × 10{sup 14} M {sub ☉} from the X-ray flux and SZ signal. The measured properties of this cluster are in good agreement with the extrapolation of an X-ray luminosity-SZ effect scaling relation calibrated from clusters discovered by the South Pole Telescope at higher masses and lower redshifts. The full XXL-CARMA sample will provide a more complete, multi-wavelength census of distantmore » clusters in order to robustly extend the calibration of cluster scaling relations to these high redshifts.« less
Authors:
; ; ;  [1] ; ;  [2] ;  [3] ;  [4] ; ; ; ;  [5] ;  [6] ;  [7] ;  [8] ;  [9] ;  [10]
  1. Department of Astronomy and Astrophysics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637 (United States)
  2. Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States)
  3. Owens Valley Radio Observatory, California Institute of Technology, Big Pine, CA 93513 (United States)
  4. LAM, OAMP, Université Aix-Marseille and CNRS, Pôle de l'Étoile, Site de Château Gombert, 38 rue Frédéric Joliot-Curie, F-13388 Marseille 13 Cedex (France)
  5. H. H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol BS8 1TL (United Kingdom)
  6. Max-Planck Institut für Extraterrestrische Physik, Giessenbachstrasse 1, D-85748 Garching (Germany)
  7. Department of Earth and Space Sciences, Chalmers University of Technology, Onsala Space Observatory, SE-439 92 Onsala (Sweden)
  8. Argelander-Institute for Astronomy, Auf dem Hügel 71, D-53121 Bonn (Germany)
  9. Service d'Astrophysique, Bt. 709, CEA Saclay, F-91191 Gif sur Yvette Cedex (France)
  10. Department of Physics and Astronomy, University of Victoria, 3800 Finnerty Road, Victoria, BC (Canada)
Publication Date:
OSTI Identifier:
22370361
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 794; 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; ASTRONOMY; CALIBRATION; COSMOLOGY; DETECTION; EMISSION; EXTRAPOLATION; GALAXY CLUSTERS; LUMINOSITY; MASS; RED SHIFT; SCALING; SPHERICAL CONFIGURATION; TELESCOPES; WAVELENGTHS; X RADIATION; X-RAY GALAXIES