| Issue |
A&A
Volume 379, Number 1, November III 2001
|
|
|---|---|---|
| Page(s) | 107 - 114 | |
| Section | Cosmology (including clusters of galaxies) | |
| DOI | https://doi.org/10.1051/0004-6361:20011317 | |
| Published online | 15 November 2001 | |
-
observations of the cluster of galaxies Abell 496
Measurements of the elemental abundances in the intracluster medium
1
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
Received:
16
May
2001
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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