Finding the Root of Rapid Star Formation

Details Finding the Root of Rapid Star Formation Finding the Root of Rapid Star Formation

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21920801l&link_type=abstract

American Astronomical Society, AAS Meeting #219, #208.01

Astronomy and Astrophysics

Astronomy

Scientific paper

Classically, star formation was thought to be a slow and inefficient process with only 2% of giant molecular cloud (GMC) mass turning into stars in a free-fall time. Turbulent support, magnetic support, and dispersal of gas via stellar feedback are proposed as the cause of this low star formation efficiency (SFE). Recent numerical simulations and observations, however, suggest a much more rapid star formation process with SFE at 10-20% or more. The driver of the high SFE remains a question, however. We perform a 16pc-scale numerical simulation of driven, supersonic, self-gravitating, hydrodynamic turbulence with the formation of star particles. We confirm high SFE and propose that the self-gravity of gas is the dominant driver of the rapid star formation.

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