On the errors of the Kurucz-Peytremann Fe I oscillator strengths

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Electron Oscillations, Error Analysis, Iron, Line Spectra, Opacity, Solar Spectra, Spectral Energy Distribution, Absorption Spectra, Standard Deviation

Scientific paper

For calculations of synthetic spectra, line-blanketed model atmospheres and Rosseland mean opacities, there remains a need for a reliable and complete list of oscillator strengths. The correlations between the errors of the Kurucz and Peytremann (1975) oscillator strengths and log gf, lower excitation potential and observed solar line depth, found by Gurtovenko and Kostik (1981), are presently shown to be consequences of the methods used to select the data. Nevertheless, for all lines belonging to a given multiplet, the log gf errors tend to have the same value, thereby allowing the normalization of the Kurucz and Peytremann gf values for the lines of a multiplet, if a subset of those lines have reliably determined gf values.

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