Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: New Young Star Candidates in CG4 and Sa101   The CG4 and Sa101 regions together cover a region of ~0.5 square degree in
the vicinity of a "cometary globule" that is part of the Gum Nebula. There are
seven previously identified young stars in this region; we have searched for
new young stars using mid- and far-infrared data (3.6 to 70 microns) from the
Spitzer Space Telescope, combined with ground-based optical data and
near-infrared data from the Two-Micron All-Sky Survey (2MASS). We find infrared
excesses in all 6 of the previously identified young stars in our maps, and we
identify 16 more candidate young stars based on apparent infrared excesses.
Most (73%) of the new young stars are Class II objects. There is a tighter
grouping of young stars and young star candidates in the Sa101 region, in
contrast to the CG4 region, where there are fewer young stars and young star
candidates, and they are more dispersed. Few likely young objects are found in
the "fingers" of the dust being disturbed by the ionization front from the
heart of the Gum Nebula.

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The categories of this paper are: dg-ga
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The categories of this paper are: supr-con
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The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
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The categories of this paper are: alg-geom
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The categories of this paper are: chem-ph
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The categories of this paper are: hep-th
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The categories of this paper are: q-fin
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The categories of this paper are: cs
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The categories of this paper are: ao-sci
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The categories of this paper are: q-alg
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The categories of this paper are: stat
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The categories of this paper are: bayes-an
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The categories of this paper are: solv-int
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The categories of this paper are: nucl-th
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The categories of this paper are: atom-ph