Distribution of dark and baryonic matter in clusters of galaxies



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Castillo Morales, África and Schindler, S. (2003) Distribution of dark and baryonic matter in clusters of galaxies. Astronomy and astrophysics, 403 (2). pp. 433-442. ISSN 0004-6361

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Official URL: http://dx.doi.org/10.1051/0004-6361:20030298


We present the analysis of baryonic and non-baryonic matter distribution in a sample of ten nearby clusters (0.03 < z < 0.09) with temperatures between 4.7 and 9.4 keV. These galaxy clusters are studied in detail using X-ray data and global physical properties are determined. Correlations between these quantities are analysed and compared with the results for distant clusters. We find an interesting correlation between the extent of the intra-cluster gas relative to the dark matter distribution. The extent of the gas relative to the extent of the dark matter tends to be larger in less massive clusters. This correlation might give us some hints on non-gravitational processes in clusters. We do not see evolution in the gas mass fraction out to a redshift of unity. Within r(500), the mean gas mass fraction obtained is (0.16 +/- 0.02) h(50)(-3/2).

Item Type:Article
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© ESO 2003. A. Castillo Morales acknowledges support by the Marie Curie Training Site grant HPMT-CT-2000-00136 by the European Comission.

Uncontrolled Keywords:X-ray-clusters; Mass-temperature relation; XMM-Newton observation; M-T relation; Intracluster medium; Cooling flows; Gas; Profiles; Rosat; Fractions
Subjects:Sciences > Physics > Astrophysics
Sciences > Physics > Astronomy
ID Code:30530
Deposited On:01 Jun 2015 10:47
Last Modified:10 Dec 2018 15:05

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