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Here we discuss the X-ray properties of clusters of galaxies opticallyselected in the Red-Sequence Cluster Survey (RCS) observed with the Chandrasatellite, at redshifts 0.6 < z < 1.2. We intended to assess the evolutionarystage of optically selected high-z clusters of galaxies, performing a spectralanalysis of the diffuse emission from their ICM. We also investigated thedistribution of AGN in their surroundings. The background subtracted spectrawere analyzed and fitted with a single temperature model to measure average ICMtemperature, X-ray bolometric luminosity and Fe abundance within typical radiibetween 200 and 350 kpc. We also analyzed the point source number density andspatial distribution in the RCS clusters fields as a function of the X-rayflux. We detected emission for the majority of the clusters, except for three,for which we have only marginal detection at ~3 Sigma. We find that thenormalization of the L-T relation for RCS clusters is a factor of ~2 lower thanthe one for X-ray selected clusters. We confirm that the Fe abundance in thedetected objects is consistent with that of X-ray selected clusters at the sameredshift. We also found an excess of low-luminosity AGN towards the center ofthe clusters.

ICM properties and AGN distribution in high-z RCS clusters