The XMM cluster survey: A massive galaxy cluster at z=1.45

• Type: Article in International Scientific Journal
• Date: 2006

Authors

stanford, sa (Author) Other; romer, ak (Author) Other; sabirli, k (Author) Other; davidson, m (Author) Other; hilton, m (Author) Other; viana, ptp (Author) FCUP; collins, ca (Author) Other; kay, st (Author) Other; liddle, ar (Author) Other; mann, rg (Author) Other; miller, cj (Author) Other; nichol, rc (Author) Other; west, mj (Author) Other; conselice, cj (Author) Other; spinrad, h (Author) Other; stern, d (Author) Other; bundy, k (Author) Other

Journal

Title: Astrophysical Journal

Vol. 646

Pages: L13-L16

ISSN: 0004-637X

Publisher: American Astronomical Society

Indexing

ISI Web of Knowledge - 155 Citations

Scopus - 143 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-004-JJZ

DOI: 10.1086/506449

Abstract (EN): We report the discovery of XMMXCS J2215.9-1738, a massive galaxy cluster at, which was found z = 1.45 in the XMM Cluster Survey. The cluster candidate was initially identified as an extended X-ray source in archival XMM data. Optical spectroscopy shows that six galaxies within a similar to 60 '' diameter region lie at. z p 1.45 +/- 0.01 Model fits to the X-ray spectra of the extended emission yield kT = 7.4(-1.8)(+2.7) keV (90% confidence); if there is an undetected central X-ray point source, then kT = 6.5(-1.8)(+2.6). The bolometric X-ray luminosity is L-x-0.6(+0.8) x 10(44) ergs s(-1) over a 2 Mpc radial region. The measured T-x, which is the highest for any known cluster at z > 1, suggests that this cluster is relatively massive for such a high redshift. The redshift of XMMXCS of J2215.9-1738 is the highest currently known for a spectroscopically confirmed cluster of galaxies.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4