() 12CO and () 13CO Observations toward Two Small Molecular Clouds with Luminous Protostellar Candidates

Details () 12CO and () 13CO Observations toward Two Small Molecular Clouds with Luminous Protostellar Candidates () 12CO and () 13CO Observations toward Two Small Molecular Clouds with Luminous Protostellar Candidates

Dec 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995pasj...47..837d&link_type=abstract

Publications of the Astronomical Society of Japan, v.47, p.837-843.

Astronomy and Astrophysics

Astronomy

4

Ism: Clouds, Ism: Individual (Iras 21413+5442), Ism: Individual (Iras 20444+4629), Stars: Formation

Scientific paper

Using the 45-meter telescope at Nobeyama Radio Observatory we performed high-angular resolution observations with the (12) CO (J=1--0) and (13) CO (J=1--0) emission lines toward two small molecular clouds with a mass of ~ 300MO . These small clouds have been suggested to be accompanied by luminous protostellar candidates, i.e., IRAS 21413+5442 (2300LO ) and IRAS 20444+4629 (1580 LO ), by earlier (13) CO observations with a lower angular resolution (Dobashi et al. 1994, ApJS 95, 419). The present observations reveal that the former IRAS point source is likely to be associated with a more distant cloud which escaped detection in the previous survey. However, we find that the (13) CO distribution in the other cloud is highly concentrated around the latter IRAS source, which indicates their physical association. Furthermore, we detected a CO outflow toward this IRAS source. All of these facts strongly imply that the association between the luminous IRAS source and the compact cloud is real.

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