Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Orbital and physical parameters, and the distance of the eclipsing
  binary system OGLE-LMC-ECL-25658 in the Large Magellanic Cloud   We present an analysis of a new detached eclipsing binary,
OGLE-LMC-ECL-25658, in the Large Magellanic Cloud. The system consists of two
late G-type giant stars on an eccentric orbit and orbital period of ~200 days.
The system shows total eclipses and the components have similar temperatures,
making it ideal for a precise distance determination. Using multi-color
photometric and high resolution spectroscopic data, we have performed an
analysis of light and radial velocity curves simultaneously using the Wilson
Devinney code. We derived orbital and physical parameters of the binary with a
high precision of < 1 %. The masses and surface metallicities of the components
are virtually the same and equal to 2.23 +/- 0.02 M_sun and [Fe/H] = -0.63 +/-
0.10 dex. However their radii and rates of rotation show a distinct trace of
differential stellar evolution. The distance to the system was calculated using
an infrared calibration between V-band surface brightness and (V-K) color,
leading to a distance modulus of (m-M) = 18.452 +/- 0.023 (statistical) +/-
0.046 (systematic). Because OGLE-LMC-ECL-25658 is located relatively far from
the LMC barycenter we applied a geometrical correction for its position in the
LMC disc using the van der Marel et al. model of the LMC. The resulting
barycenter distance to the galaxy is d_LMC = 50.30 +/- 0.53 (stat.) kpc, and is
in perfect agreement with the earlier result of Pietrzynski et al.(2013).

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The categories of this paper are: funct-an
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The categories of this paper are: hep-th
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The categories of this paper are: mtrl-th
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The categories of this paper are: math-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: q-fin
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The categories of this paper are: solv-int
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The categories of this paper are: cs
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The categories of this paper are: cmp-lg
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The categories of this paper are: bayes-an
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The categories of this paper are: q-bio
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The categories of this paper are: hep-ph
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The categories of this paper are: eess
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The categories of this paper are: patt-sol
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The categories of this paper are: acc-phys
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The categories of this paper are: gr-qc