Fragmentation in stellar collapse
Abstract
A three dimensional Cartesian code was developed to model molecular cloud collapse and protostellar formation. The basic Eulerian scheme employs spatially second-order accurate, finite difference methods to advance the fluid variables in time. The hydrodynamic equations governing the collapse include the effects of self-gravity, rotation, and radiative transfer. Supplementary equations include Poisson's equation which relates the gravitational potential to the density distribution and a mean intensity equation derived with the Eddington approximation for radiative transfer. The gas pressures and internal energies are determined from equations of state derived for a molecular cloud composed of hydrogen, helium, and heavier elements.
- Publication:
-
A Bibliography of Planetary Geology and Geophysics Principal Investigators and their Associates, 1990 - 1991
- Pub Date:
- June 1991
- Bibcode:
- 1991pggp.rept..420M
- Keywords:
-
- Astronomical Models;
- Cartesian Coordinates;
- Finite Difference Theory;
- Fragmentation;
- Gravitational Collapse;
- Hydrodynamic Equations;
- Molecular Clouds;
- Protostars;
- Stellar Evolution;
- Three Dimensional Models;
- Density Distribution;
- Eddington Approximation;
- Equations Of State;
- Euler Equations Of Motion;
- Gas Pressure;
- Gravitational Fields;
- Helium;
- Hydrogen;
- Poisson Equation;
- Radiative Transfer;
- Astrophysics