The effect of diffusion on prenova evolution - CNO-enriched envelopes

Details The effect of diffusion on prenova evolution - CNO-enriched envelopes The effect of diffusion on prenova evolution - CNO-enriched envelopes

Jun 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...281..367p&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 281, June 1, 1984, p. 367-374. Research supported by the U.S. National Rese

Astronomy and Astrophysics

Astrophysics

66

Novae, Nuclear Fusion, Stellar Cores, Stellar Envelopes, Stellar Evolution, White Dwarf Stars, Diffusion Theory, Stellar Luminosity, Stellar Models

Scientific paper

The authors have investigated the effect of diffusion at the core-envelope boundary of a 1.25 M_sun; C-O white dwarf with a 10-5M_sun; H-rich envelope (with Z = 0.03), a typical nova progenitor. The diffusion equations, which include concentration, pressure, and thermal terms, were solved along with the evolution equations for a mixture of three gases: H, He, and a third component, representative of all CNO elements present. Several models with different initial luminosities were evolved until a thermonuclear runaway developed. The relevance of the results to models of fast novae is discussed.

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