Revision of solar equivalent widths, Fe I oscillator strengths and the solar iron abundance

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Abundance, Iron, Line Spectra, Oscillator Strengths, Solar Spectra, Spectral Line Width, Calibrating, Tables (Data), Thermodynamic Equilibrium

Scientific paper

The authors employ detailed modelling of solar Fe I and Fe II lines to calibrate the correction of equivalent widths for contamination by unresolved blends. They then determine the equivalent widths of 750 clean lines in the Jungfraujoch Atlas of the optical solar spectrum, and they compare these to the values given for the Utrecht Atlas by Moore et al. (1966). The authors also select clean Fe I lines, discuss their NLTE formation, construct a NLTE Fe I curve of growth, provide new oscillator strengths for weak Fe I lines, and revise the solar iron abundance to NFe/NH = (4.3±0.5)10-5. The authors use the results to appraise the basis and methods of classical stellar abundance determination.

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