Intrinsic Shapes of Molecular Cloud Cores

Details Intrinsic Shapes of Molecular Cloud Cores Intrinsic Shapes of Molecular Cloud Cores

2001-01-08

arxiv.org/abs/astro-ph/0101106v1

Astronomy and Astrophysics

Astrophysics

20 pages, 10 figures. To appear in ApJ (2001 April 1). Color figures available at http://www.astro.uwo.ca/~cjones/ or http:/

Scientific paper

10.1086/320093

We conduct an analysis of the shapes of molecular cloud cores using recently compiled catalogs of observed axis ratios of individual cores mapped in ammonia or through optical selection. We apply both analytical and statistical techniques to deproject the observed axis ratios in order to determine the true distribution of cloud core shapes. We find that neither pure oblate nor pure prolate cores can account for the observed distribution of core shapes. Intrinsically triaxial cores produce distributions which agree with observations. The best-fit triaxial distribution contains cores which are more nearly oblate than prolate.

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