Left: fits to the Fe I absorption line at 6703.58 Å in the observed spectrum of the SWP star HD 224538 using the different parameters a of our pseudo-Voigt function, “Fe = 0.08” marks changes of the Fe abundances due to use of the pseudo-Voigt broadening in comparison to a simple Gaussian. Right: fits to the observed Li resonance doublet with a different 7Li∕6 Li . 7 Li = 90% means here the computed spectra with 7 Li = 90% and 6Li = 10%, i.e. 7 Li ∕6Li = 9.
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