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arXiv:astro-ph/0011119 (astro-ph)
[Submitted on 6 Nov 2000 (v1), last revised 7 Nov 2000 (this version, v2)]

Title:UV observations of the galaxy cluster Abell 1795 with the optical monitor on XMM-Newton

Authors:J. P. Mittaz, J. S. Kaastra, T. Tamura, A. C. Fabian, R. F. Mushotzky, J. R. Peterson, Y. Ikebe, D. H. Lumb, F. Paerels, G. Stewart, S. Truolyubov
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Abstract: We present the results of an analysis of broad band UV observations of the central regions of Abell 1795 observed with the optical monitor on XMM-Newton. As have been found with other UV observations of the central regions of clusters of galaxies, we find evidence for star formation. However, we also find evidence for absorption in the cD galaxy on a more extended scale than has been seen with optical imaging. We also report the first UV observation of part of the filamentary structure seen in H$\alpha$, X-rays and very deep U band imaging. The part of the filament we see is very blue with UV colours consistent with a very early (O/B) stellar population. This is the first direct evidence of a dominant population of early type stars at the centre of Abell 1795 and implies very recent star formation at the centre of this cluster
Comments: 6 pages, 3 figures accepted by A&A Letters
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:astro-ph/0011119
  (or arXiv:astro-ph/0011119v2 for this version)
  https://doi.org/10.48550/arXiv.astro-ph/0011119
Related DOI: https://doi.org/10.1051/0004-6361%3A20000019

Submission history

From: Jonathan Mittaz [view email]
[v1] Mon, 6 Nov 2000 14:58:25 UTC (49 KB)
[v2] Tue, 7 Nov 2000 12:35:48 UTC (49 KB)
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