XMM-Newton studies of a massive cluster of galaxies: RXC J2228.6+2036

被引：0
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作者：
Jia, S.M. [1 ,2 ]
Böhringer, H. [1 ]
Pointecouteau, E. [3 ]
Chen, Y. [2 ]
Zhang, Y.Y. [4 ]
机构：
[1] Max-Planck-Institut für Extraterrestrische Physik, 85748 Garching, Germany
[2] Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
[3] CESR-CNRS, 9 Av. du Colonel Roche, 31028 Toulouse, France
[4] Argelander-Institut für Astronomie, Rheinische Friedrich-Wilhelms-Universität Bonn, Auf dem Huegel 71, 53121 Bonn, Germany
来源：
Astronomy and Astrophysics | 2008年 / 489卷 / 01期
关键词：
We present the X-ray properties of a massive cluster of galaxies (RXC J2228.6+2036 at z = 0.421) using XMM-Newton data. The X-ray mass modeling is based on the temperature and density distributions of the intracluster medium derived using a deprojection method. We find that RXC J2228.6+2036 is a hot cluster (T500 = 8.92+1.78-1.32 keV) showing a cooling flow rate of 12.0+56.0-12.0 Mo yr-1 based on spectral fitting within the cooling flow radius (r cool = 14710 kpc). The total cluster mass is M500 = (1.190.35)×1015 Mo and the mean gas mass fraction is fgas = 0.165 ± 0.045 at r500 = 1.61 ± 0.16 Mpc. We discuss the PSF-correction effect on the spectral analysis and find that; for the selected annular width; the PSF-corrected temperatures are consistent with those without PSF-correction.We observe remarkable agreement between X-ray and SZ results; which is of prime importance for future SZ surveys. RXC J2228.6+2036 obeys the empirical scaling relations found in general massive galaxy clusters (e.g. S-T; M-T; L-T and M-Y); after accounting for self-similar evolution. © 2008 ESO;
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