Bracketing the astrophysical opacities for the King IVa mixture

Details Bracketing the astrophysical opacities for the King IVa mixture Bracketing the astrophysical opacities for the King IVa mixture

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...341..414r&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 341, June 1, 1989, p. 414-420.

Statistics

30

Cepheid Variables, Line Spectra, Optical Thickness, Stellar Interiors, Stellar Spectra, Boltzmann Transport Equation, Stellar Composition, Stellar Structure

Scientific paper

Opacities for the King IVa mixture are presented using two physical models. In both models the spectral lines were calculated for an ensemble of ionic specimens whose abundances with regard to charge state and electronic configuration were determined according to the Boltzmann statistics. In the first model only the charge states and electronic configurations were treated explicitly; no allowance was made for the dispersion of spectral lines due to the different angular momentum states of the many-electron system. In the second model the dispersion of spectral lines due to the angular momentum states was approximated by broadening the lines.

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