Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Star Formation Rates in Cooling Flow Clusters: A UV Pilot Study with
  Archival XMM-Newton Optical Monitor Data   We have analyzed XMM-Newton Optical Monitor (OM) UV (180-400 nm) data for a
sample of 33 galaxies, of which 30 are cluster members. Nine of these are
central cluster galaxies (CCGs) in cooling flow clusters, having mass
deposition rates which span a range of 8 to 525 solar masses per year. Using
the ratio of UV to 2MASS J band flux, we find a significant UV excess in many,
but not all, cooling flow CCGs. This UV excess is a direct indication of the
presence of young massive stars, and therefore recent star formation, in these
galaxies. Using the Starburst99 spectral energy distribution (SED) model of
continuous star formation over a 900 Myr period, we derive star formation rates
of 0.2 to 219 solar masses per year for the cooling flow sample. For 2/3 of
this sample it is possible to equate Chandra/XMM cooling flow mass deposition
rates with UV inferred star formation rates, for a combination of starburst
lifetime and IMF slope. This is a pilot study of the well populated XMM UV
cluster archive and a more extensive follow up study is currently underway.

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The categories of this paper are: stat
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The categories of this paper are: math-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: bayes-an
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The categories of this paper are: ao-sci
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The categories of this paper are: eess
32
The categories of this paper are: atom-ph
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
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The categories of this paper are: adap-org
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The categories of this paper are: quant-ph
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The categories of this paper are: funct-an
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The categories of this paper are: nlin
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The categories of this paper are: math
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The categories of this paper are: cs
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The categories of this paper are: econ