Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Binaries Among Debris Disk Stars   We have gathered a sample of 112 main-sequence stars with known debris disks.
We collected published information and performed adaptive optics observations
at Lick Observatory to determine if these debris disks are associated with
binary or multiple stars. We discovered a previously unknown M-star companion
to HD 1051 at a projected separation of 628 AU. We found that 25+/-4% of our
debris disk systems are binary or triple star systems, substantially less than
the expected ~50%. The period distribution for these suggests a relative lack
of systems with 1-100 AU separations. Only a few systems have blackbody disk
radii comparable to the binary/triple separation. Together, these two
characteristics suggest that binaries with intermediate separations of 1-100 AU
readily clear out their disks. We find that the fractional disk luminosity, as
a proxy for disk mass, is generally lower for multiple systems than for single
stars at any given age. Hence, for a binary to possess a disk (or form planets)
it must either be a very widely separated binary with disk particles orbiting a
single star or it must be a small separation binary with a circumbinary disk.

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The categories of this paper are: nlin
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The categories of this paper are: gr-qc
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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: hep-ph
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The categories of this paper are: econ
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The categories of this paper are: comp-gas
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The categories of this paper are: math-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: bayes-an
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The categories of this paper are: alg-geom
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The categories of this paper are: plasm-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: eess
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The categories of this paper are: hep-th
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The categories of this paper are: supr-con