Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observations and Preliminary Modeling of the Light Curves of Eclipsing
  Binary Systems NSVS 7322420 and NSVS 5726288   We present new photometric observations of the $\beta$ Lyrae-type eclipsing
binary systems NSVS 7322420 and NSVS 5726288. These observations represent the
first multi-band photometry performed on these systems. The light curves were
analyzed with PHOEBE, a front-end GUI based on the Wilson-Devinney program, to
produce models to describe our observations. Our preliminary solutions indicate
that NSVS 7322420 is a primary filling semi-detached system with unusual
features warranting further study. These features include a pronounced
O'Connell effect, a temporal variance in the light curve, and an unusual "kink"
in the light curve around the secondary eclipse. The cause of these features is
unknown, but one possibility is the transfer of mass between the component
stars. Meanwhile, NSVS 5726288 is probably a typical detached system.

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The categories of this paper are: bayes-an
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The categories of this paper are: q-fin
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The categories of this paper are: stat
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The categories of this paper are: cs
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The categories of this paper are: supr-con
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The categories of this paper are: gr-qc
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The categories of this paper are: chao-dyn
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The categories of this paper are: cond-mat
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The categories of this paper are: atom-ph
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The categories of this paper are: eess
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The categories of this paper are: econ
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The categories of this paper are: ao-sci
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The categories of this paper are: math-ph
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The categories of this paper are: physics
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The categories of this paper are: solv-int
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The categories of this paper are: dg-ga