Construction of internally consistent scales of solar oscillator strengths and contents of chemical elements Determination of CO I oscillator strengths from the equivalent widths of Fraunhofer lines with allowance for their hyperfine structure

Astronomy and Astrophysics – Astronomy

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Cobalt, Fraunhofer Lines, Oscillator Strengths, Solar Spectra, Hyperfine Structure, Spectral Line Width

Scientific paper

The authors use the observed equivalent widths of 50 Co I lines and cobalt abundance lg A = 4.98 to derive the oscillator strengths (gf) of these lines. In addition, for 14 lines from the total list the oscillator strengths (gfHFS) were obtained with accounting for their hyperfine structure. Clear dependences of the difference lg gf - lg gfHFS on equivalent width and excitation potential are revealed. Using these dependences, the authors have corrected all the oscillator strengths obtained without accounting for the hyperfine structure.

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