Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An Interferometric Search for Bright Companions to 51 Pegasi   We report on a near-infrared, long-baseline interferometric search for
luminous companions to the star 51 Pegasi conducted with the Palomar Testbed
Interferometer. Our data is completely consistent with a single-star
hypothesis. We find no evidence to suggest a luminous companion to 51 Pegasi,
and can exclude a companion brighter than a $\Delta$K of 4.27 at the 99%
confidence level for the 4.2-day orbital period indicated by spectroscopic
measurements. This $\Delta$K corresponds to an upper limit in the companion
M$_K$ of 7.30, in turn implying a main-sequence companion mass less than 0.22
M$_{\sun}$.

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The categories of this paper are: hep-lat
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The categories of this paper are: nlin
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The categories of this paper are: math
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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: nucl-ex
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The categories of this paper are: stat
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The categories of this paper are: eess
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The categories of this paper are: nucl-th
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The categories of this paper are: math-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: gr-qc
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The categories of this paper are: supr-con
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The categories of this paper are: patt-sol
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The categories of this paper are: mtrl-th
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The categories of this paper are: bayes-an