Statistics – Computation
Scientific paper
Sep 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...248..727s&link_type=abstract
Astrophysical Journal, Part 1, vol. 248, Sept. 1, 1981, p. 727-737. NSF-supported research.
Statistics
Computation
71
Protostars, Radiative Transfer, Stellar Envelopes, Stellar Evolution, Stellar Mass Accretion, Stellar Models, Energy Transfer, Gas Dynamics, Gas Temperature, Graphite, Photons, Thermochemistry
Scientific paper
The radiation gas dynamics of the rapidly inflowing material during the main accretion phase of protostellar evolution is considered. The momentum and energy transfer by radiation and matter, the dissociation of the molecular gas, and the thermochemical destruction of graphite grains are followed in detail. Considerable physical insight is gained by taking advantage of the vastly disparate time and length scales associated with the various processes. Different computational techniques are used in different portions of the accretion flow: the optically thick dust envelope, the thermalization layer of stellar photons, the opacity gap, and the radiative precursor (if one exists). The evolution of the envelope of a protostellar model whose hydrostatic core was described in an earlier communication is summarized.
Shu Frank H.
Stahler Steven W.
Taam Ronald E.
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