Computer Science – Numerical Analysis
Scientific paper
Jan 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975apj...195..483d&link_type=abstract
Astrophysical Journal, vol. 195, Jan. 15, 1975, pt. 1, p. 483-492.
Computer Science
Numerical Analysis
15
Astronomical Models, Numerical Analysis, Stellar Evolution, Stellar Rotation, Viscosity, White Dwarf Stars, Angular Momentum, Angular Velocity, Carbon, Degenerate Matter, Nuclear Fusion, Stellar Mass
Scientific paper
Improved viscous evolutionary sequences of differentially rotating, axisymmetric, nonmagnetic, zero-temperature white-dwarf models are constructed using the relativistically corrected degenerate electron viscosity. The results support the earlier conclusion that angular momentum transport due to viscosity does not lead to overall uniform rotation in many interesting cases. Qualitatively different behaviors are obtained, depending on how the total mass M and angular momentum J compare with the M and J values for which uniformly rotating models exist. Evolutions roughly determine the region in M and J for which models with a particular initial angular momentum distribution can reach carbon-ignition densities in 10 b.y. Such models may represent Type I supernova precursors.
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