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THE XXL SURVEY. V. DETECTION OF THE SUNYAEV-ZEL'DOVICH EFFECT OF THE REDSHIFT 1.9 GALAXY CLUSTER XLSSU J021744.1-034536 WITH CARMA

Abstract : 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.
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https://hal.archives-ouvertes.fr/hal-01442009
Contributor : Catherine Beaussier <>
Submitted on : Friday, January 20, 2017 - 1:27:04 PM
Last modification on : Thursday, May 20, 2021 - 3:32:14 AM

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A. B. Mantz, Z. Abdulla, J. E. Carlstrom, C. H. Greer, E. M. Leitch, et al.. THE XXL SURVEY. V. DETECTION OF THE SUNYAEV-ZEL'DOVICH EFFECT OF THE REDSHIFT 1.9 GALAXY CLUSTER XLSSU J021744.1-034536 WITH CARMA. The Astrophysical Journal, American Astronomical Society, 2014, 794 (2), ⟨10.1088/0004-637X/794/2/157⟩. ⟨hal-01442009⟩

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