Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: LSPM J1112+7626: detection of a 41-day M-dwarf eclipsing binary from the
  MEarth transit survey   We report the detection of eclipses in LSPM J1112+7626, which we find to be a
moderately bright (I_C = 12.14 +/- 0.05) very low-mass binary system with an
orbital period of 41.03236 +/- 0.00002 days, and component masses M_1 = 0.395
+/- 0.002 Msol and M_2 = 0.275 +/- 0.001 Msol in an eccentric (e = 0.239 +/-
0.002) orbit. A 65 day out of eclipse modulation of approximately 2%
peak-to-peak amplitude is seen in I-band, which is probably due to rotational
modulation of photospheric spots on one of the binary components. This paper
presents the discovery and characterization of the object, including radial
velocities sufficient to determine both component masses to better than 1%
precision, and a photometric solution. We find that the sum of the component
radii, which is much better-determined than the individual radii, is inflated
by 3.8 +0.9 -0.5 % compared to the theoretical model predictions, depending on
the age and metallicity assumed. These results demonstrate that the
difficulties in reproducing observed M-dwarf eclipsing binary radii with
theoretical models are not confined to systems with very short orbital periods.
This object promises to be a fruitful testing ground for the hypothesized link
between inflated radii in M-dwarfs and activity.

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The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
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The categories of this paper are: cs
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The categories of this paper are: nucl-ex
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The categories of this paper are: eess
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The categories of this paper are: chem-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: hep-th
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The categories of this paper are: q-alg
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-ex
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The categories of this paper are: funct-an
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The categories of this paper are: gr-qc
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-ph
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The categories of this paper are: q-fin