Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...221..155g&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 221, no. 1, Aug. 1989, p. 155-160.
Astronomy and Astrophysics
Astronomy
21
Astronomical Spectroscopy, Carbon, Oscillator Strengths, Ultraviolet Astronomy, Far Ultraviolet Radiation, High Resolution, Hubble Space Telescope, Line Spectra
Scientific paper
Oscillator strengths of 20 lines of neutral carbon, belonging to 10 weak multiplets in the 1200-2000 A spectral range are measured in emission with a wall-stabilized arc. Through comparisons with a strong C I reference line, the absolute scale of oscillator strengths of the investigated weak lines is connected to that for strong multiplets by Goldbach and Nollez (1987). The uncertainty in the absolute gf-values is at the 20 percent level. The good agreement found for the strong lines with the theoretical absolute scale of Nussbaumer and Storey (1984) is confirmed for lines with gf-values smaller by a factor of ten, but fails for the weakest lines.
Goldbach Claudine
Martin Michel
Nollez Gérard
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