Analytical expressions for the Rosseland-mean opacity and electron scattering in stellar atmospheres

Details Analytical expressions for the Rosseland-mean opacity and electron scattering in stellar atmospheres Analytical expressions for the Rosseland-mean opacity and electron scattering in stellar atmospheres

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...218..161b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 218, no. 1-2, July 1989, p. 161-166.

Astronomy and Astrophysics

Astrophysics

3

Electron Scattering, Stellar Atmospheres, Absorptivity, Metallicity, Scattering Coefficients

Scientific paper

Simple analytical approximations for the calculations of the electron scattering coefficient, the Rosseland-mean opacity and the equation of state in the temperature range of 4000 to 50,000 K and the density range of 10 to the -13th to 10 to the -7th g/cu cm. These approximations are valid for a gas with 1, 0.1, and 0.01 times the solar metal abundances in LTE. The accuracy of the approximations is better than 5 percent over most of this temperature and density range.

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