Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...257..373c&link_type=abstract
Astrophysical Journal, Part 1, vol. 257, June 1, 1982, p. 373-375. Research supported by the U.S. Department of Energy;
Astronomy and Astrophysics
Astrophysics
54
Abundance, Forbidden Bands, Heavy Elements, Interstellar Gas, Ultraviolet Spectra, Aluminum, Carbon, Electron Oscillations, Electron Transitions, Ionization, Nitrogen, Oxygen Spectra, Silicon, Transition Probabilities
Scientific paper
Detailed calculations are reported of the oscillator strengths of 21 spin-forbidden lines of C II, C III, N I, N II, N III, O I, O II, Al II, and Si III, including 10 lines arising from seven ground levels. All 21 lines lie in the region from 1160 to 2670 A, and the oscillator strengths probably are accurate typically to + or - 50%. These weak lines are particularly important in determining accurate elemental abundances in the interstellar gas.
Cowan Robert D.
Hobbs Lew M.
York Don G.
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