Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1974
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974apj...194..699s&link_type=abstract
Astrophysical Journal, vol. 194, Dec. 15, 1974, pt. 1, p. 699-708.
Astronomy and Astrophysics
Astrophysics
2
Convergence, Equilibrium Equations, Stellar Mass, Stellar Structure, Abundance, Astronomical Models, Chemical Composition, Opacity, Stellar Rotation, Uniqueness Theorem
Scientific paper
A systematic study is made of the number and types of solutions of the equilibrium equations of stellar structure, in the case of homogeneous stars of Population I over the mass range 2-1000 solar masses, with four different opacity representations. A variant of the usual fitting method permits the simultaneous investigation of convergence and tendency toward multiplicity of the solutions. Quadratic interpolation and extrapolation of Carson's new opacity tables produces a very large opacity at low temperatures that greatly affects the loose outer layers of massive stars, while leaving the cores practically unaffected. As a result, over a small mass range, well above 100 solar masses, triple solutions exist, always near an effective temperature of log Te = 4.73. A simple classification of the known exceptions to the Vogt-Russell theorem on the uniqueness of stellar structure is given.
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