Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The masses and radii of HD186753B and TYC7096-222-1B: the discovery of
  two M-dwarfs that eclipse A-type stars   We present observations of two new single-lined eclipsing binaries, both
consisting of an Am star and an M-dwarf, discovered by the Wide Angle Search
for Planets transit photometry survey. Using WASP photometry and spectroscopic
measurements we find that HD186753B has an orbital period of P=1.9194 days, a
mass of M=0.24 +/- 0.02 M_sun and radius of R=0.31 +/- 0.06 R_sun; and that
TCY7096-222-1B has an orbital period of P=8.9582 days, a mass between 0.29 and
0.54 M_sun depending on eccentricity and radius of R=0.263+0.02-0.07 R_sun. We
find that the Am stars have relatively low rotational velocities that closely
match the orbital velocities of the M-dwarfs, suggesting that they have been
"spun-down" by the M-dwarfs.

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The categories of this paper are: hep-th
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The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
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The categories of this paper are: quant-ph
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The categories of this paper are: nlin
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The categories of this paper are: math-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: gr-qc
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The categories of this paper are: funct-an
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The categories of this paper are: q-fin
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The categories of this paper are: alg-geom
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The categories of this paper are: q-bio
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The categories of this paper are: chem-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: hep-ex
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The categories of this paper are: comp-gas