Other
Scientific paper
Jul 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...231..277r&link_type=abstract
Astrophysical Journal, Part 1, vol. 231, July 1, 1979, p. 277-283.
Other
18
Barium, Line Spectra, Solar Atmosphere, Solar Spectra, Metal Ions, Resonance, Solar Limb, Spectral Energy Distribution
Scientific paper
Recent studies of the effects of partial frequency redistribution (PRD) on the formation of strong chromospheric resonance lines are extended to weaker lines formed in the photosphere. Methods that have been derived to compute the PRD formation of the Ca II spectrum are applied to the solar Ba II spectrum. It is found that PRD is important in the formation of the 4554-A resonance line, and the results confirm that its effects on the line source function explain the emission wings of this line observed near the limb. Source function structure and line profiles for Ba II 4554 A and Ba II 5854 A are discussed; they may serve as an example for estimating effects of PRD in other photospheric lines in stellar atmospheres.
Milkey Robert W.
Rutten Robert J.
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