SIMBAD references

2004A&A...428..757O - Astronomy and Astrophysics, volume 428, 757-779 (2004/12-4)

A uniform X-ray analysis of 79 distant galaxy clusters with ROSAT and ASCA.


Abstract (from CDS):

We present a uniform analysis of the ROSAT HRI and the ASCA GIS/SIS data for 79 distant clusters of galaxies in the redshift range 0.1<z<0.82 to study the global structures of the intracluster medium. We have constructed an X-ray catalog consisting of the largest sample of clusters in the redshift range for which pointed X-ray observations were carried out with both the observatories. We determined the emission-weighted X-ray temperatures of the clusters with ASCA, while we studied surface brightness distribution with the ROSAT HRI utilizing the isothermal β model. We investigated the statistical properties and trends for redshift evolution of the X-ray parameters including the temperature, the density profile of the intracluster gas and the gas-mass fraction within r500. We also present correlations of the cluster parameters with the X-ray temperature and with the core radius and compare them with the predictions of the self-similar model, from which we discuss the possible origin of the double structure discovered in the core radius distribution.

Abstract Copyright:

Journal keyword(s): galaxies: clusters: general - galaxies: intergalactic medium - X-rays: galaxies - cosmology: observations - cosmology: dark matter - catalogs

CDS comments: Table 1 col.(1) : ID NN (1-79) not used in SIMBAD

Simbad objects: 85

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