Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977azh....54..367n&link_type=abstract
Astronomicheskii Zhurnal, vol. 54, Mar.-Apr. 1977, p. 367-371. In Russian.
Astronomy and Astrophysics
Astronomy
Atomic Energy Levels, Fine Structure, Oxygen Spectra, Solar Atmosphere, Solar Spectra, Spectrum Analysis, Attenuation Coefficients, Doppler Effect, Frequency Response, Ground State, Radial Distribution
Scientific paper
The O I emission resonance triplet at 1302, 1304, and 1306 A in the solar spectrum is investigated on the basis of the theory of resonance-multiplet formation. A Boltzmann ground-state sublevel atomic-population distribution is assumed along with conserved scattering, total frequency redistribution in each level, Doppler line absorption coefficients, and a semi-infinite atmosphere. Triplet line profiles are constructed using a previously computed H-function for primary sources that diminish exponentially with depth, and the total intensities and fluxes are determined. Comparison with calculations for rectilinear line profiles shows that there is a substantial frequency redistribution. The results obtained are found to be in satisfactory agreement with observations.
Nagirner Dmitrij I.
Shneivais A. B.
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