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Evolution of rotating interstellar clouds. III - On the formation of multiple star systems
Bodenheimer, P.
AA(NASA, Ames Research Center, Space Science Div., Moffett Field; Lick Observatory, Santa Cruz, Calif.)
Astrophysical Journal, Part 1, vol. 224, Sept. 1, 1978, p. 488-496. (ApJ Homepage)
Publication Date:
NASA/STI Keywords:
Cosmic Dust, Galactic Rotation, Interstellar Matter, Stellar Evolution, Angular Momentum, Binary Stars, Fragmentation, Gravitational Collapse, Hydrodynamics, Main Sequence Stars, Momentum Transfer
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The evolution of a rotating massive cloud, starting at interstellar densities, continuing through a series of intermediate fragmentation stages, and ending with stellar multiple systems with components near the main sequence, is outlined. The scenario is based on results of two- and three-dimensional numerical hydrodynamical calculations of collapsing clouds. Transfer of spin angular momentum primarily into orbital motion is assumed to occur at each fragmentation stage. Expected initial conditions in the cloud lead to final fragments which have in many cases the masses and angular momenta appropriate to observed main-sequence systems. Other points of comparison with observations are briefly noted.

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Database: Astronomy
arXiv e-prints