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Star-forming Substructure within Molecular Clouds

Published online by Cambridge University Press:  21 March 2013

James Di Francesco
James Di Francesco*
Affiliation:
National Research Council of Canada, 5071 West Saanich Road, Victoria, BC, CanadaV9E 2E7 email: james.difrancesco@nrc-cnrc.gc.ca
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Abstract

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Wide-field far-infrared/submillimeter continuum maps of molecular clouds by the Herschel Space Observatory GBS and HOBYS surveys are revealing the star-forming substructures that lead to star formation in dense gas. In particular, these maps have revealed the central role in clouds of filaments, likely formed through turbulent motions. These filaments appear to be non-isothermal and fragment into cores only when their column densities exceed a stability threshold. Organizations of filament networks suggest the relative role of turbulence and gravity can be traced in different parts of a cloud, and filament intersections may lead to larger amounts of mass flow that form the precursors of high-mass stars or clusters.

Keywords

ISM: dustextinction — ISM: structure — ISM: evolution — submillimeter
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S292: Molecular Gas, Dust, and Star Formation in Galaxies , August 2012 , pp. 29 - 34
Copyright
Copyright © International Astronomical Union 2013

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