Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...283..466c&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 283, Aug. 1, 1984, p. 466-468. Research supported by the Science and Engine
Astronomy and Astrophysics
Astrophysics
23
Opacity, Stellar Composition, Stellar Spectra, Absorption Spectra, Atomic Energy Levels, Cyano Compounds, Radiative Transfer, Stellar Atmospheres, Stellar Models, Stellar Temperature
Scientific paper
Discrepancies in results obtained from analytical codes for physical processes producing an observed CNO peak near one million K in stars are discussed. A Los Alamos code attributes the bumps to K-edge absorption in the production of C from the He-stage. Calculated Carson opacities (1984) for the CNO bump were an order of magnitude larger than the Los Alamos predictions. Analysis indicates that consideration of discrete negative energy states to augment continuous electron distribution calculations yields results commensurate with the Los Alamos calculations. Further improvements in the codes are indicated in areas of line broadening, line and edge splitting and interionic field effects.
Carson Richard T.
Huebner Walter F.
Magee Norman H. Jr.
Merts A. L.
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