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J/MNRAS/391/869 A mapping survey of massive CO cores (Guan+, 2008)
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Beginning of ReadMe :J/MNRAS/391/869 A mapping survey of massive CO cores (Guan+, 2008)
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A mapping survey of massive CO cores.
Guan X., Wu Y., Ju B.
<Mon. Not. R. Astron. Soc., 391, 869-880 (2008)>
=2008MNRAS.391..869G
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ADC_Keywords: Molecular clouds ; Interstellar medium ; Carbon monoxide
Keywords: stars: formation - ISM: clouds - ISM: molecules
Abstract:
We mapped 21 star-forming regions with the ^12^CO, ^13^CO and C^18^O
(1-0) lines using the 13.7-m telescope of Purple Mount Observatory.
This mapping survey resolved 53 ^13^CO cores, of which 22 are
sourceless. We obtained the physical parameters of these cores. The
relation between ^13^CO linewidth and core size and that between
column density and core size were analysed. The cores 00211+6549-1 and
22566+5830 were found to have outflows. Systematic VLSR shifts were
detected in nine regions: 00211+6549, 00232+6437, 05168+3634,
19199+1358, 20160+3911, 22566+5830, 23042+6000, S146 and S270.
Signatures of infall and cloud collision were found in regions
18507+0121 and 19199+1358, respectively. We studied the mass function
of these ^13^CO cores. The core masses range from 3.40 to
4.64x10^4^M_sun_, and the core mass function is a power-law
distribution of index -0.82+/-0.04.
Description:
Observations of the ^12^CO, ^13^CO and C^18^O (1-0) lines were made in
mid-to-late January, late February and early March in 2006 with the
13.7-m telescope of the Purple Mount Observatory (PMO).