Protostellar formation in rotating interstellar clouds. V - Nonisothermal collapse and fragmentation

Details Protostellar formation in rotating interstellar clouds. V - Nonisothermal collapse and fragmentation Protostellar formation in rotating interstellar clouds. V - Nonisothermal collapse and fragmentation

Nov 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apjs...62..519b&link_type=abstract

Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 62, Nov. 1986, p. 519-552.

Other

107

Binary Stars, Gravitational Collapse, Molecular Clouds, Nonisothermal Processes, Protostars, Star Formation, Boundary Value Problems, Hydrodynamic Equations, Interstellar Matter, Stellar Rotation

Scientific paper

Numerical calculations are presented for rigorous models spanning a four-dimensional parameter space of initial conditions of the three-dimensional collapse of rotating protostellar clouds, encompassing radiative transfer in the Eddington approximation and detailed thermodynamical relations. It is found that protostellar formation may involve a few stages of hierarchical fragmentation terminated by increased thermal pressure in the nonisothermal regime, that high thermal energy clouds remain nearly axisymmetric during the first dynamic collapse phase, and that very slowly rotating clouds can fragment. The presolar nebula was probably formed from a cloud with very little initial rotation.

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