Structure of Molecular Clouds and Properties of Cloud Cores

Details Structure of Molecular Clouds and Properties of Cloud Cores Structure of Molecular Clouds and Properties of Cloud Cores

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999sf99.proc...72t&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

1

Scientific paper

I discuss the nature of molecular clouds, from molecular clouds themselves to ``cloud cores'', which are denser portions in molecular clouds and known to be the sites of star formation. First, I report large-scale mapping observations of two molecular clouds with the Mt. Fuji submm telescope in the 492-GHz CI line, and discuss the formation and evolution of molecular clouds. Second, I show the hierarchical structure in the Orion A giant molecular cloud (GMC) studied in 13CO, CS (1-0), and H13CO+. Third, I report a comparative study of cloud cores between the Orion A GMC, which is forming massive stars as well as low-mass stars, and those in dark clouds, which are low-mass star formation sites. Finally, by comparing our observations with Nakano's theoretical model, I discuss the meaning of turbulent dissipation and star formation.

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