SIMBAD references

2008ApJ...674..316H - Astrophys. J., 674, 316-328 (2008/February-2)

Cooling, gravity, and geometry: flow-driven massive core formation.

HEITSCH F., HARTMANN L.W., SLYZ A.D., DEVRIENDT J.E.G. and BURKERT A.

Abstract (from CDS):

We study numerically the formation of molecular clouds in large-scale colliding flows including self-gravity. The models emphasize the competition between the effects of gravity on global and local scales in an isolated cloud. Global gravity builds up large-scale filaments, while local gravity, triggered by a combination of strong thermal and dynamical instabilities, causes cores to form. The dynamical instabilities give rise to a local focusing of the colliding flows, facilitating the rapid formation of massive protostellar cores of a few hundred M. The forming clouds do not reach an equilibrium state, although the motions within the clouds appear to be comparable to virial. The self-similar core mass distributions derived from models with and without self-gravity indicate that the core mass distribution is set very early on during the cloud formation process, predominantly by a combination of thermal and dynamical instabilities rather than by self-gravity.

Abstract Copyright:

Journal keyword(s): Gravitation - Instabilities - ISM: Clouds - Methods: Numerical - Stars: Formation - Turbulence

Simbad objects: 3

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2021.02.24-19:17:01

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