Boundary and initial conditions in protostar calculations

Details Boundary and initial conditions in protostar calculations Boundary and initial conditions in protostar calculations

May 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976mnras.175..323d&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 175, May 1976, p. 323-333.

Astronomy and Astrophysics

Astronomy

8

Boundary Conditions, Gravitational Collapse, Interstellar Gas, Protostars, Stellar Evolution, Boundary Value Problems, Elastic Waves, Gas Density, Hertzsprung-Russell Diagram, Jeans Theory, Supersonic Speed

Scientific paper

On first fragmentation protostars probably form part of a larger protocluster cloud already in a state of dynamic collapse. In that case it is argued that the protostar boundary is initially collapsing at supersonic speed relative to the core. This prevents information from the boundary reaching the core and calls into question models such as Larson's, which start homogeneously but become centrally condensed due to the propagation of a rarefaction wave from the boundary.

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