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Title:
The evolution of protostars. I - Global formulation and results
Authors:
Stahler, S. W.; Shu, F. H.; Taam, R. E.
Affiliation:
AA(California, University, Berkeley, Calif.), AB(California, University, Berkeley, Calif.), AC(Northwestern University, Evanston, Ill.)
Publication:
Astrophysical Journal, Part 1, vol. 241, Oct. 15, 1980, p. 637-654. NSF-supported research. (ApJ Homepage)
Publication Date:
10/1980
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Protostars, Stellar Evolution, Astronomical Models, Cosmic Dust, Gravitational Collapse, Optical Thickness
DOI:
10.1086/158377
Bibliographic Code:
1980ApJ...241..637S

Abstract

A new formulation for the problem of protostar evolution is developed on the basis of a method that involves the division of the global problem into a set of more manageable subproblems. Jump conditions of the radiative accretion shock which joins the hydrostatic mass-gaining core to the dynamic inner cloud envelope are derived. Standard integration schemes yield the high accuracy needed to resolve complex spatial structures which span many orders of magnitude in density and temperature. It is shown that a 1-solar-mass protostar ends its main accretion phase moderately high up in the H-R diagram; this star begins its pre-main-sequence phase of quasi-static contraction on a convective Hayashi track.

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