Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A photometric survey for variable stars in the globular cluster M5   We present the results of a photometric survey for variable stars in the
nearby globular cluster M5. A 14.8x22.8 arcmin^2 field centered on the cluster
was monitored for a total of 37 hours with a CCD camera mounted on the 1.0-m
Swope telescope. Five new variables were identified: four blue stragglers which
are SX Phe pulsating variables, and an eclipsing binary with an orbital period
of 0.466 d. The eclipsing binary lies near the main-sequence turnoff on the
cluster color-magnitude diagram. We do not confirm the variability of any of
the 10 eclipsing binaries identified in the cluster field by Reid (1996) and
Yan & Reid (1996). The dwarf nova M5-V101 exhibited two outbursts with full
amplitudes of about 2.7 mag during our observations. A V/B-V color-magnitude
diagram of the surveyed field was obtained, and a possible extreme HB star
located 2 mag below cutoff of the blue HB was identified.

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The categories of this paper are: solv-int
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The categories of this paper are: alg-geom
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The categories of this paper are: comp-gas
2
The categories of this paper are: math
4
The categories of this paper are: cond-mat
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The categories of this paper are: dg-ga
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The categories of this paper are: nucl-ex
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The categories of this paper are: physics
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The categories of this paper are: q-bio
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The categories of this paper are: eess
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The categories of this paper are: funct-an
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The categories of this paper are: atom-ph
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The categories of this paper are: math-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: stat
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The categories of this paper are: cmp-lg