XMM observation of the dynamically young galaxy cluster CL 0939+4713 Filippis, E. de Schindler, S. Castillo-Morales, A. Galaxies Clusters Intergalactic medium Evolution Cosmology X-rays We present an XMM observation of the distant galaxy cluster CL 0939+4713. The X-ray image shows pronounced substructure, with two main subclusters forming the cluster core. 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 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. 2013-11-06T11:47:34Z 2013-11-06T11:47:34Z 2003 info:eu-repo/semantics/article Filippis, E.; Schindler, S.; Castillo-Morales, A. XMM observation of the dynamically young galaxy cluster CL 0939+4713. Astronomy and Astrophysics, 404(1): 63-74 (2003). [http://hdl.handle.net/10481/29038] 0004-6361 1432-0746 arXiv:astro-ph/0304027v1 doi: 10.1051/0004-6361:20030481 http://hdl.handle.net/10481/29038 eng http://creativecommons.org/licenses/by-nc-nd/3.0/ info:eu-repo/semantics/openAccess Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License EDP Sciences