Diffusion in stars - Ionization and abundance effects

Details Diffusion in stars - Ionization and abundance effects Diffusion in stars - Ionization and abundance effects

Jul 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apjs...31..489m&link_type=abstract

Astrophysical Journal Supplement Series, vol. 31, July 1976, p. 489-515. Research supported by the Conseil National de Recherch

Astronomy and Astrophysics

Astrophysics

99

Abundance, Ionization Potentials, Stellar Atmospheres, Thermal Diffusion, Astrophysics, Metallic Stars, Stellar Models

Scientific paper

A diffusion equation is derived which is compatible with equilibrium to a high degree of accuracy throughout all practical astrophysical situations. The equation takes into account abundance and ionization effects as well as the redistribution of the atomic radiative force on a given element among all its ionization states. Partial ionization is treated in detail, and a term is added to allow for the appearance and disappearance of particles from a given state of ionization. Thermal diffusion is shown not to be very important in the atmospheric models employed.

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