Turbulence and the stability of molecular clouds

Details Turbulence and the stability of molecular clouds Turbulence and the stability of molecular clouds

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...242.1019f&link_type=abstract

Astrophysical Journal, Part 1, vol. 242, Dec. 15, 1980, p. 1019-1022. NASA-supported research.

Astronomy and Astrophysics

Astrophysics

50

Flow Stability, Gravitational Collapse, Interstellar Gas, Molecular Clouds, Stellar Evolution, Turbulent Flow, Carbon Monoxide, Kinetic Energy, Potential Energy, Shear Flow, Stochastic Processes, Turbulent Diffusion, Velocity Distribution

Scientific paper

Molecular clouds may be stabilized against gravitational collapse by the turbulent velocity field within them. It is suggested that the energy derived from differential galactic rotation can maintain the turbulent flow in the interstellar medium. The characteristic decay time for interstellar turbulence is found to be about 10-billion years. The rate and efficiency of star formation in giant molecular clouds reflect the stochastic nature of turbulence.

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