Fe I lines in the spectra of cool stars: NLTE effects in solar-like atmospheres.
A detailed NLTE investigation of Fe I lines is carried out within the framework of the MACKKL model of the quiet solar atmosphere. The authors used a realistic iron atom model which allows for the fine term structure and has about 250 levels; it involves nearly 500 UV, optical, and IR bound-bound and bound-free transitions and includes the
Shchukina, N. G. et al.
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1998