The XXL Survey. V. Detection of the Sunyaev-Zel'Dovich Effect of the Redshift 1.9 Galaxy Cluster XLSSU J021744.1-034536 With Carma
Artikel i vetenskaplig tidskrift, 2014

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(-0.21)(+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-500 = (3.0 +/- 0.4) x 10(-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 similar to 2, we estimate a mass M-500 similar to (1-2) x 10(14) M-circle dot 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 distant clusters in order to robustly extend the calibration of cluster scaling relations to these high redshifts.

galaxies: clusters: intracluster medium

galaxies: clusters: individual (XLSSU J021744.1-034536)

X-rays: galaxies: clusters


A. B. Mantz

University of Chicago

Z. Abdulla

University of Chicago

J. E. Carlstrom

University of Chicago

C. H. Greer

University of Arizona

E. M. Leitch

University of Chicago

D. P. Marrone

University of Arizona

S. Muchovej

California Institute of Technology

C. Adami

Laboratoire d'Astrophysique de Marseille

M. Birkinshaw

University of Bristol

M. Bremer

University of Bristol

N. Clerc

Max Planck-institutet

P. Giles

University of Bristol

Cathy Horellou

Chalmers, Rymd- och geovetenskap, Radioastronomi och astrofysik

B. Maughan

University of Bristol

F. Pacaud

Argelander Institute for Astronomy

M. Pierre

CEA Saclay

J. Willis

University of Victoria

Astrophysical Journal

0004-637X (ISSN) 1538-4357 (eISSN)

Vol. 794 157


Astronomi, astrofysik och kosmologi