On the fragmentation of cosmic gas clouds. II - Opacity-limited star formation

Details On the fragmentation of cosmic gas clouds. II - Opacity-limited star formation On the fragmentation of cosmic gas clouds. II - Opacity-limited star formation

May 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...214..152s&link_type=abstract

Astrophysical Journal, Part 1, vol. 214, May 15, 1977, p. 152-160.

Astronomy and Astrophysics

Astrophysics

125

Gravitational Collapse, Hydrogen Clouds, Star Formation, Cosmic Dust, Magnetic Fields, Optical Thickness, Protostars, Rotating Bodies

Scientific paper

Opacity-limited fragmentation of gravitationally collapsing gas clouds is reexamined with inclusion of realistic dust-grain opacities and cooling rates. A minimum fragment size of approximately 0.01 solar mass is found in spherical collapse, but may be the same or larger for spheroidal collapse. A simple analytic expression is given for the characteristic protostellar mass above which further fragmentation can occur during the early opaque phases of dynamical protostellar collapse. The effects of rotation, fragment collisions, and magnetic fields are also discussed.

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