Analytic Line Profile Diagnostics in Partial Redistribution with Continuum Absorption

Details Analytic Line Profile Diagnostics in Partial Redistribution with Continuum Absorption Analytic Line Profile Diagnostics in Partial Redistribution with Continuum Absorption

Oct 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003csss...12.1115g&link_type=abstract

The Future of Cool-Star Astrophysics: 12th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun (2001 July 30 - August

Astronomy and Astrophysics

Astrophysics

Scientific paper

The comoving-frame partially coherent scattering (CPCS) approximation is applied to the problem of continuum absorption during resonance-line transfer, to assess its effect on the Wilson-Bappu effect in supergiants. The basic approach is to allow the partial frequency redistribution, which normally carries photons far enough into the wings such that they escape, to be truncated by continuous absorption during the diffusion. The result is a semi-analytic conceptual approximation that reveals the mechanisms by which background opacity alters resonance-line formation and profile diagnostics.

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