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2014MNRAS.443..230H - Mon. Not. R. Astron. Soc., 443, 230-240 (2014/September-1)

Accretion and diffusion time-scales in sheets and filaments.

HEITSCH F. and HARTMANN L.

Abstract (from CDS):

A comparison of accretion and (turbulent) magnetic diffusion time-scales for sheets and filaments demonstrates that dense star-forming clouds generally will - under realistic conditions - become supercritical due to mass accretion on time-scales at least an order of magnitude shorter than ambipolar and/or turbulent diffusion time-scales. Thus, ambipolar or turbulent diffusion - while present - is unlikely to control the formation of cores and stars.

Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

Journal keyword(s): gravitation - MHD - methods: analytical - stars: formation - ISM: clouds

Simbad objects: 8

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