XMM-Newton observations of the cluster of galaxies Abell 496 - Measurements of the elemental abundances in the intracluster medium

The results from XMM-Newton observations of the relaxed cluster of galaxies Abell 496 are presented. The spatially-resolved X-ray spectra taken by the European Photon Imaging Cameras show a temperature drop and a Fe abundance increase in the intra-cluster medium (ICM) towards the cD galaxy at the cl uster center. The abundances of Si and S also show a central enhancement. H igh resolution soft X-ray spectra obtained with the Reflection Grating Spec trometers provides a strong constraint on the temperature structure in the central cool plasma. Furthermore, the O abundance at the cluster core is ac curately measured based on the O VIII Ly alpha line detected with the RGS. Contrary to the Si, S, and Fe abundances, the O abundance is radially const ant over the cluster.