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arXiv:astro-ph/0402533 (astro-ph)
[Submitted on 23 Feb 2004]

Title:Spatial distributions of the REFLEX-DXL galaxy clusters at z~0.3 observed by XMM-Newton

Authors:Y.-Y. Zhang, A. Finoguenov, H. Boehringer, Y. Ikebe, K. Matsushita, P. Schuecker, L. Guzzo, C. A. Collins
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Abstract: We present XMM-Newton results on the spatially resolved temperature profiles of eight massive galaxy clusters of a volume-limited sample at redshifts $z\sim0.3$ (REFLEX-DXL sample) and an additional luminous cluster at $z=0.2578$, selected from the REFLEX survey. Useful temperature measurements could be performed out to radii with overdensity 500 ($r_{500}$). The scaled temperature distributions show good similarities. We discovered diversities in the temperature gradients at the outer cluster radii with examples of both flat and strongly decreasing profiles which call for different physical interpretations. We found an indication of the 'warm-hot' gas existing in or around the hot clusters. Using RXCJ0307.0-2840 we demonstrate that the errors on the mass estimates are within 25% up to r_{500}.
Comments: 6 pages, 6 figures, to appear in the proceedings of "Modelling the Intergalactic and Intracluster Media", Vulcano Italy, October 1-4, 2003
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:astro-ph/0402533
  (or arXiv:astro-ph/0402533v1 for this version)
  https://doi.org/10.48550/arXiv.astro-ph/0402533

Submission history

From: Yu-Ying Zhang [view email]
[v1] Mon, 23 Feb 2004 19:05:58 UTC (307 KB)
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