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

Journal Article · Sat Nov 01 04:00:00 EST 1986 · Astrophys. J., Suppl. Ser.; (United States)

DOI:https://doi.org/10.1086/191150· OSTI ID:6635437

Boss, A R

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. 37 references.

• Research Organization: Carnegie Institution of Washington, Washington, DC
• OSTI ID: 6635437
• Journal Information: Astrophys. J., Suppl. Ser.; (United States), Journal Name: Astrophys. J., Suppl. Ser.; (United States) Vol. 62; ISSN APJSA
• Country of Publication: United States
• Language: English

Related Subjects

640102 -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BINARY STARS
BOUNDARY-VALUE PROBLEMS
COSMIC GASES
FLUIDS
GASES
GRAVITATIONAL COLLAPSE
MATHEMATICAL MODELS
MOTION
PROTOSTARS
ROTATION
STAR EVOLUTION
STARS
THREE-DIMENSIONAL CALCULATIONS