Other
Scientific paper
Nov 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981mnras.197..461g&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 197, Nov. 1981, p. 461-475. Australian Research Grants Committee
Other
42
Gravitational Collapse, Isothermal Processes, Protostars, Rotating Fluids, Stellar Evolution, Angular Momentum, Astronomical Models, Density Distribution, Finite Difference Theory, Stellar Rotation
Scientific paper
The collapse of an isothermal cloud which, initially, is uniformly rotating and nonaxisymmetric is investigated using the SPH particle method, and results are compared with those obtained by Boss and Bodenheimer (1979). The initial model is as similar as possible to the model evolved by Boss and Bodenheimer using two finite-difference codes. The SPH calculations qualitatively agree with the finite-difference calculations up to 1.7 initial free-fall times; however, beyond 1.7 free-fall times, the present calculations diverge from those of Boss and Bodenheimer, who found the final state to consist of a binary system. In the present calculations, the two condensations eventually coalesce. The major part of the difference is attributed to the fact that the azimuthal resolution in the Boss-Bodenheimer calculations has degraded significantly during the calculations.
Gingold Robert A.
Monaghan Joseph J.
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