Distribution of baryonic and non-baryonic matter in clusters of galaxies



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Castillo Morales, África and Schindler, S. (2002) Distribution of baryonic and non-baryonic matter in clusters of galaxies. In Tracing cosmic evolution with galaxy clusters, proceedings. Astronomical Soc. Pacific, pp. 351-352. ISBN 1-58381-108-7

[thumbnail of castillo19preprint.pdf]

Official URL: http://arxiv.org/pdf/astro-ph/0106201v1.pdf


We present the analysis of baryonic and non-baryonic matter distributions in a sample of eleven nearby clusters (0.03 < z < 0.09) with temperatures between 4.4 and 9.4 keV. These galaxy clusters have been studied in detail using X-ray data and global physical properties have been determined. Correlations between these quantities have been analysed and compared with the results for distant clusters. We found an interesting dependence between the relative gas extent (expressed as the ratio of gas mass fractions at r(500) and 0.5 x r(500)) and the total cluster mass. The extent of the gas relative to the extent of the dark matter tends to be larger in less massive clusters. This dependence might give us some hints about non-gravitational processes in clusters.

Item Type:Book Section
Additional Information:

Workshop on Tracing Cosmic Evolution with Galaxy Clusters (2001. Sesto Pusteria, Italy). We would like to thank the organizers of the meeting for the financial support. We thank Javier Campania for the help printing the poster.

Uncontrolled Keywords:Astronomy and astrophysics
Subjects:Sciences > Physics > Astrophysics
Sciences > Physics > Astronomy
ID Code:30621
Deposited On:05 Jun 2015 10:43
Last Modified:10 Dec 2018 15:05

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