The XMM Cluster Survey: A Massive Galaxy Cluster at z = 1.45

  title={The XMM Cluster Survey: A Massive Galaxy Cluster at z = 1.45},
  author={S. Stanford and A. K. Romer and K. Sabirli and M. Davidson and M. Hilton and P. P. Viana and C. Collins and S. Kay and A. Liddle and R. Mann and C. Miller and R. Nichol and M. West and C. Conselice and H. Spinrad and D. Stern and K. Bundy},
  journal={The Astrophysical Journal},
  • S. Stanford, A. K. Romer, +14 authors K. Bundy
  • Published 2006
  • Physics
  • The Astrophysical Journal
  • We report the discovery of XMMXCS J2215.9-1738, a massive galaxy cluster at z=1.45, which was found 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 ~60" diameter region lie at z=1.45+/-0.01. Model fits to the X-ray spectra of the extended emission yield kT=7.4+2.7-1.8 keV (90% confidence); if there is an undetected central X-ray point source, then kT=6.5+2.6-1.8 keV… CONTINUE READING
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