Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Molecular clumps and star formation associated with the infrared dust
  bubble N131   Aims. The aim is to explore the interstellar medium around the dust bubble
N131 and search for signatures of star formation.
  Methods. We perform a multiwavelength study around the N131 with data taken
from large-scale surveys of infrared observation with online archive. We
present new observations of three CO J = 1 - 0 isotope variants from Purple
Mountain Observatory 13.7 m telescope. We analyze the distribution of the
molecular gas and dust in the environment of the N131. We use color-color
diagrams to search for young stellar objects and identify exciting star
candidates.
  Results. The kinematic distance of about 8.6 kpc has been adopted as the
distance of the bubble N131 from the Sun in this work. We have found a ring of
clouds in CO emission coincident with the shell of N131 seen in the Spitzer
telescope images, and two giant elongated molecular clouds of CO emission
appearing on opposite sides of the ringlike shell of N131. There is a cavity
within bubble at 1.4 GHz and 24 {\mu}m. Seven IRAS point sources are
distributed along the ringlike shell of the bubble N131. 15 exciting stars and
63 YSOs candidates have been found. The clustered class I and II YSOs are
distributed along the elongated clouds in the line of sight.

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The categories of this paper are: hep-ex
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The categories of this paper are: stat
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: chao-dyn
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The categories of this paper are: bayes-an
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The categories of this paper are: cs
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The categories of this paper are: alg-geom
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The categories of this paper are: patt-sol
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The categories of this paper are: math
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The categories of this paper are: nlin
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The categories of this paper are: eess
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The categories of this paper are: math-ph
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The categories of this paper are: funct-an
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The categories of this paper are: hep-th