Collapse models for dark interstellar clouds

descriptionPublicationkeyboard_double_arrow_right Article 01 Jan 1982 English Publisher:American Astronomical SocietyJournal:The Astrophysical Journal, volume 252, page 524 (issn: 0004-637X, eissn: 1538-4357,

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Authors: K. R. Villere; D. C. Black;

doi: 10.1086/159580

Collapse models for dark interstellar clouds

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Abstract

Properties of self-consistent numerical hydrodynamic models are compared with observed properties of several dark clouds. The results are consistent with the view that these clouds are undergoing gravitational collapse. The clouds appear to have evolved from similar initial states and to have ages comparable to their free-fall times. Derived cloud masses range between 10 and 1000 solar masses, correlating with cloud size. The models reproduce observed cloud-to-cloud variations in the (C-13)O abundance, and they offer additional evidence that the (C-13)O abundance varies within individual clouds.

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