Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The TOP-SCOPE survey of PGCCs: PMO and SCUBA-2 observations of 64 PGCCs
  in the 2nd Galactic Quadrant   In order to understand the initial conditions and early evolution of star
formation in a wide range of Galactic environments, we carried out an
investigation of 64 \textit{Planck} Galactic Cold Clumps (PGCCs) in the second
quadrant of the Milky Way. Using the $^{13}$CO and C$^{18}$O $J = 1 - 0$ lines,
and 850\,$\mu$m continuum observations, we investigated cloud fragmentation and
evolution associated with star formation. We extracted 468 clumps and 117 cores
from the $^{13}$CO line and 850\,$\mu$m continuum maps, respectively. We make
use of the Bayesian Distance Calculator and derived the distances of all 64
PGCCs. We found that in general, the mass-size plane follows a relation of
$m\sim r^{1.67}$. At a given scale, the masses of our objects are around 1/10
of that of typical Galactic massive star-forming regions. Analysis of the clump
and core masses, virial parameters, densities, and mass-size relation suggests
that the PGCCs in our sample have a low core formation efficiency
($\sim$3.0\%), and most PGCCs are likely low-mass star-forming candidates.
Statistical study indicates that the 850\,$\mu$m cores are more turbulent, more
optically thick, and denser than the $^{13}$CO clumps for star formation
candidates, suggesting that the 850\,$\mu$m cores are likely more appropriate
future star-formation candidates than the $^{13}$CO clumps.

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The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
16
The categories of this paper are: stat
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The categories of this paper are: chao-dyn
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The categories of this paper are: cmp-lg
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The categories of this paper are: alg-geom
2
The categories of this paper are: math
8
The categories of this paper are: hep-ex
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The categories of this paper are: nucl-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: supr-con
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The categories of this paper are: cs
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The categories of this paper are: solv-int
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The categories of this paper are: patt-sol