Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The 2MASS Wide-Field T Dwarf Search. II. Discovery of Three T Dwarfs in
  the Southern Hemisphere   We present the discovery of three new Southern Hemisphere T dwarfs identified
in the Two Micron All Sky Survey. These objects, 2MASS 0348-6022, 2MASS
0516-0445, and 2MASS 2228-4310, have classifications T7, T5.5, and T6.5,
respectively. Using linear absolute magnitude/spectral type relations derived
from T dwarfs with measured parallaxes, we estimate spectrophotometric
distances for these discoveries; the closest, 2MASS 0348-6022, is likely within
10 pc of the Sun. Proper motions and estimated tangential velocities are
consistent with membership in the Galactic disk population. We also list
Southern Hemisphere T dwarf candidates that were either not found in subsequent
near-infrared imaging observations and are most likely uncatalogued minor
planets, or have near-infrared spectra consistent with background stars.

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The categories of this paper are: mtrl-th
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The categories of this paper are: q-alg
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The categories of this paper are: math
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The categories of this paper are: patt-sol
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The categories of this paper are: q-bio
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The categories of this paper are: hep-ex
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The categories of this paper are: acc-phys
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The categories of this paper are: econ
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The categories of this paper are: cs
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The categories of this paper are: cond-mat
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The categories of this paper are: comp-gas
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The categories of this paper are: funct-an
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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: bayes-an
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The categories of this paper are: adap-org