Fe I lines in the spectra of cool stars: NLTE effects in solar-like atmospheres.

Bibcode
1998KPCB...14..242S
Shchukina, N. G.; Trujilo-Bueno, J.
Bibliographical reference

Kinematics Phys. Celest. Bodies, Vol. 14, No. 4, p. 242 - 252

Advertised on:
0
1998
Number of authors
2
IAC number of authors
1
Citations
2
Refereed citations
2
Description
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 conditions near the Fe I continuum. Errors that arise in the heights of formation, source functions, equivalent widths, and central depths of the Fe I lines within the LTE approximation are statistically studied. The authors demonstrate that the behavior of the errors can be described by a parametric set of curves depending on height of line formation, the parameter being the excitation potential of the lower level.
Type
Refereed
Solar atmosphere
Stellar atmospheres

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