Investigation of Properties of the Intercluster Medium Rich Clusters of Galaxies

Details Investigation of Properties of the Intercluster Medium Rich Clusters of Galaxies Investigation of Properties of the Intercluster Medium Rich Clusters of Galaxies

2010-12-29

arxiv.org/abs/1012.5905v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Scientific paper

The statistical analysis of properties of 213 rich clusters of galaxies is performed. The existence of correlations between the X-ray luminosity and the temperature of the intracluster medium and between the X-ray luminosity and the velocity dispersion of the galaxies is confirmed. New anti-correlation between optical luminosities L_Halpha and x-ray luminosities L_x of intracluster gas in clusters is discovered: log(L_Halpha/L_Sun)=a-b(log(L_x/L_Sun)). The existence of sequences in the log(L_Halpha/L_Sun)-log(L_x/L_Sun) plane testifies to that the masses of the intracluster gas in different clusters can differ significantly.

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