Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Distributed Population of Low Mass Pre-Main Sequence Stars near the
  Taurus Molecular Clouds   We present a drift scan survey covering a ~5 deg by 50 deg region toward the
southern portion of the Taurus-Auriga molecular cloud. Data taken in the B,R,I
filters with the Quest-2 camera on the Palomar 48-inch telescope were combined
with 2MASS near-infrared photometry to select candidate young stars. Follow-up
optical spectroscopy of 190 candidates led to identification of 42 new low mass
pre-main sequence stars with spectral types M4-M8, of which approximately half
exhibit surface gravity signatures similar to known Taurus stars while the
other half exhibit surface gravity signatures similar to members of the
somewhat older Upper Sco, TW Hya and Beta Pic associations. The pre-main
sequence stars are spread over ~35 deg, and many are located well outside of
previously explored regions. From assessment of the spatial and proper motion
distributions, we argue that the new pre-main sequence stars identified far
from the clouds cannot have originated from the vicinity of the 1-2 Myr-old
subclusters which contain the bulk of the identified Taurus members, but
instead represent a newly-identified area of recent star-formation near the
clouds.

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The categories of this paper are: hep-ex
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The categories of this paper are: stat
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The categories of this paper are: comp-gas
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The categories of this paper are: quant-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: math
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The categories of this paper are: math-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: hep-th
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The categories of this paper are: mtrl-th
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The categories of this paper are: gr-qc
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The categories of this paper are: dg-ga
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The categories of this paper are: adap-org
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The categories of this paper are: ao-sci
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The categories of this paper are: q-fin
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The categories of this paper are: q-bio