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- Title
NLTE IRON ABUNDANCE DETERMINATION IN RED GIANTS.
- Authors
Ezzeddine, R.; Merle, T.; Plez, B.
- Abstract
Our aim is to perform Non-LTE iron abundance calculations on a sample of Kepler red giants with reliable fundamental atmospheric parameters from asteroseismology, specifically log g, in order to calibrate for unknown atomic collisional effects with neutral hydrogen for which quantum mechanical data does not yet exist. Preliminary results show better mutual agreement between Fel and Fell lines as compared to LTE, as well as less Fel abundance dispersion than that of previous work.
- Subjects
STELLAR atmospheres; RED giant spectra; QUANTUM mechanics; INELASTIC collisions; ATOMIC collisions
- Publication
EAS Publications Series, 2013, Vol 63, p407
- ISSN
1633-4760
- Publication type
Article
- DOI
10.1051/eas/1363046