Search for Molecular Clouds toward Intermediate-Latitude IRAS Sources in the Southern Sky

Details Search for Molecular Clouds toward Intermediate-Latitude IRAS Sources in the Southern Sky Search for Molecular Clouds toward Intermediate-Latitude IRAS Sources in the Southern Sky

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999sf99.proc...82y&link_type=abstract

Star Formation 1999, Proceedings of Star Formation 1999, held in Nagoya, Japan, June 21 - 25, 1999, Editor: T. Nakamoto, Nobeyam

Computer Science

Scientific paper

We have conducted a search for molecular clouds toward southern IRAS point sources at intermediate Galactic latitude (|b|>=10o) in the 12CO (J = 1--0) emission with the NANTEN telescope. The main purpose of the survey is to find a new sample of star-forming clouds unknown to date. Of the 29 targets, we detected CO emission toward 5 sources. Among 5 detections, the molecular cloud associated with 06345-3023 was detected for the first time. If we assume the distance as 1.5 kpc, this source is ~ 430 pc away from the Galactic plane. Three sources, 04591-0856, 05044-0325, and 05050-0614, are located west to the Orion molecular clouds, and 13543-3941 is located in the cometary globule CG 12. Four of the 5 clouds show a cometary shape and three of them have the IRAS source located at the edge opposite to the tail. We find all the CO clouds are associated with optical nebulosities, which are likely reflection nebulae. A comparison of the present CO clouds with those in Ophiuchus, Taurus, Chamaeleon, and L1333 indicates that star-forming clouds tend to have high column density, as well as smaller ratio in Mvir/MLTE for a given cloud mass, MLTE.

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