Thermal conductivity in stellar atmospheres. II - Without magnetic field

Details Thermal conductivity in stellar atmospheres. II - Without magnetic field Thermal conductivity in stellar atmospheres. II - Without magnetic field

Sep 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977a%26a....60..413n&link_type=abstract

Astronomy and Astrophysics, vol. 60, no. 3, Sept. 1977, p. 413-416.

Astronomy and Astrophysics

Astrophysics

15

Atmospheric Conductivity, Chapman-Enskog Theory, Gas Mixtures, Stellar Atmospheres, Temperature Effects, Thermal Conductivity, Abundance, Approximation, Atmospheric Ionization, Thermodynamic Equilibrium

Scientific paper

The Chapman-Enskog-Burnett theory is used to calculate the coefficient of thermal conductivity for a gas mixture of stellar abundances, assuming departures from local thermodynamic equilibrium (non-LTE). In addition, using elementary kinetic theory, simple approximation formulas for the coefficient of thermal conductivity are given that allow evaluation under arbitrary ionization conditions and for an arbitrary element abundance. The deviation of the approximation from the rigorous calculation in both the LTE and the non-LTE cases is at most ten percent.

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