2008A&A...487L..33L


C.D.S. - SIMBAD4 rel 1.7 - 2020.04.01CEST23:55:59

2008A&A...487L..33L - Astronomy and Astrophysics, volume 487, L33-36 (2008/8-4)

2XMM J083026+524133: the most X-ray luminous cluster at redshift 1.

LAMER G., HOEFT M., KOHNERT J., SCHWOPE A. and STORM J.

Abstract (from CDS):

In the distant universe X-ray luminous clusters of galaxies are rare objects. Large area surveys are therefore needed to probe the high luminosity end of the cluster population at redshifts z>1. We correlated extended X-ray sources from the second XMM-Newton source catalogue (2XMM) with the SDSS in order to identify new clusters of galaxies. Distant cluster candidates in empty SDSS fields were imaged in the r- and z-bands with the Large Binocular Telescope. We extracted the X-ray spectra of the cluster candidates and fitted thermal plasma models to the data. We determined the redshift 0.99±0.03 for 2XMM J083026.2+524133 from its X-ray spectrum. With a bolometric luminosity of 1.8x1045erg/s this is the most X-ray luminous cluster at redshifts z ≥1. We measured a gas temperature of 8.2±0.9keV and estimate a cluster mass M500=5.6x1014M. The optical imaging revealed a rich cluster of galaxies.

Abstract Copyright:

Journal keyword(s): galaxies: clusters: individual: 2XMM J083026.2+524133 - X-rays: galaxies: clusters

Status at CDS:  

Simbad objects: 5

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Number of rows : 5

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 XMMU J083026.2+524133 ClG 08 30 25.900 +52 41 28.40           ~ 11 0
2 SDSS J083026.39+524130.5 G 08 30 26.40 +52 41 30.5           ~ 1 0
3 QSO J0831+5245 QSO 08 31 41.7095363198 +52 45 17.620340544   19.2   14.5 13.9 ~ 480 1
4 ClG J1226+3332 ClG 12 26 57.7 +33 32 50           ~ 193 0
5 ClG J2215-1738 ClG 22 15 58.5 -17 38 03           ~ 89 0

    Equat.    Gal    SGal    Ecl

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2020.04.01-23:55:59

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