Volume 379, Number 1, November III 2001
|Page(s)||107 - 114|
|Section||Cosmology (including clusters of galaxies)|
|Published online||15 November 2001|
- observations of the cluster of galaxies Abell 496
Measurements of the elemental abundances in the intracluster medium
SRON National Institute for Space Research, Sorbonnelaan 2, 3584 CA Utrecht, The Netherlands
2 IFC Milan, 20133 Milano, Italy
Corresponding author: T. Tamura, T.Tamura@sron.nl
Accepted: 13 September 2001
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 cluster center. The abundances of Si and S also show a central enhancement. High resolution soft X-ray spectra obtained with the Reflection Grating Spectrometers provides a strong constraint on the temperature structure in the central cool plasma. Furthermore, the O abundance at the cluster core is accurately measured based on the Oviii line detected with the RGS. Contrary to the Si, S, and Fe abundances, the O abundance is radially constant over the cluster.
Key words: galaxies: clusters: individual: A 496 / galaxies: clusters: general / galaxies: abundances / X-rays: galaxies: clusters
© ESO, 2001
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