Volume 404, Number 1, June II 2003
|Page(s)||63 - 74|
|Section||Cosmology (including clusters of galaxies)|
|Published online||26 May 2003|
XMM observation of the dynamically young galaxy cluster CL 0939+4713
Astrophysics Research Institute, Liverpool John Moores University, Birkenhead CH41 1LD, UK
2 Center for Space Research, Massachusetts Institute of Technology, 70 Vassar Street, Building 37, Cambridge, MA 02139, USA
3 Institut für Astrophysik, Leopold-Franzens-Universität Innsbruck, Technikerstr. 25, A-6020 Innsbruck, Austria
4 Dpto. Física Teórica y del Cosmos, Universidad de Granada, Avda. Fuentenueva s/n, 18002 Granada, Spain
Corresponding author: E. De Filippis, firstname.lastname@example.org
Accepted: 24 March 2003
We present an XMM observation of the distant galaxy cluster CL 0939+4713. The X-ray image shows pronounced substructure, with two main subclusters which have even some internal structure. This is an indication that the cluster is a dynamically young system. This conclusion is supported by the temperature distribution: a hot region is found between the two main subclusters indicating that they are at the beginning of a major merger, and that they will probably collide in a few hundreds of Myr. The intra-cluster gas of CL 0939+4713 shows inhomogeneities in the metal distribution, with the optically richer subcluster having a higher metallicity.
Key words: galaxies: clusters: general / intergalactic medium / galaxies: evolution / cosmology: observations / cosmology: theory / X-rays: galaxies: clusters
© ESO, 2003
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.