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

• Tipo: Artigo em Revista Científica Internacional
• Data: 2006

Autores

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

Revista

Título: Astrophysical Journal

Vol. 646

Páginas: L13-L16

ISSN: 0004-637X

Editora: American Astronomical Society

Indexação

ISI Web of Knowledge - 155 Citações

Scopus - 143 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Física

Outras Informações

ID Authenticus: 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 4