Continuous opacity from Ne^-

Details Continuous opacity from Ne^- Continuous opacity from Ne^-

Apr 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996mnras.279..859j&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 279, Issue 3, pp. 859-865.

Astronomy and Astrophysics

Astronomy

2

Atomic Data, Atomic Processes, Stars: Abundances, Stars: Atmospheres, Infrared: General

Scientific paper

Free-free absorption coefficients of the negative neon ion are calculated by the phase-shift approximation based on multiconfiguration Hartree-Fock continuum wave functions. These wave functions accurately account for electron-neon correlation and polarization, and yield scattering cross-sections in excellent agreement with the latest experimental values. The coefficients are expected to give the best current estimates of Ne^- continuous absorption. We find that Ne^- makes only a small contribution (less than 0.3 per cent) to stellar opacities, including hydrogen-deficient stars with enhanced Ne abundances.

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