Astrophys. J., Suppl. Ser., 217, 7 (2015/March-0)
Catalog of dense cores in the Orion A giant molecular cloud.
SHIMAJIRI Y., KITAMURA Y., NAKAMURA F., MOMOSE M., SAITO M., TSUKAGOSHI T., HIRAMATSU M., SHIMOIKURA T., DOBASHI K., HARA C. and KAWABE R.
Abstract (from CDS):
We present Orion A giant molecular cloud core catalogs, which are based on a 1.1 mm map with an angular resolution of 36" (∼0.07 pc) and C18O (J = 1-0) data with an angular resolution of 26.4" (∼0.05 pc). We have cataloged 619 dust cores in the 1.1 mm map using the Clumpfind method. The ranges of the radius, mass, and density of these cores are estimated to be 0.01-0.20 pc, 0.6-1.2x102 M☉, and 0.3x104-9.2x106/cm3, respectively. We have identified 235 cores from the C18O data. The ranges of the radius, velocity width, LTE mass, and density are 0.13-0.34 pc, 0.31-1.31 km/s, 1.0-61.8 M☉, and (0.8-17.5)x103/cm3, respectively. From the comparison of the spatial distributions between the dust and C18O cores, four types of spatial relations were revealed: (1) the peak positions of the dust and C18O cores agree with each other (32.4% of the C18O cores), (2) two or more C18O cores are distributed around the peak position of one dust core (10.8% of the C18O cores), (3) 56.8% of the C18O cores are not associated with any dust cores, and (4) 69.3% of the dust cores are not associated with any C18O cores. The data sets and analysis are public.
catalogs - ISM: individual: Orion-A GMC
VizieR on-line data:
<Available at CDS (J/ApJS/217/7): table2.dat table4.dat>
Table 2: [SKN2015] AzTEC-Ori NNN N=619, Table 4: [SKN2015] C18O-Ori NNN N=235.
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