| Issue |
A&A
Volume 453, Number 2, July II 2006
|
|
|---|---|---|
| Page(s) | 723 - 727 | |
| Section | Stellar atmospheres | |
| DOI | https://doi.org/10.1051/0004-6361:20065074 | |
| Published online | 16 June 2006 | |
NLTE analysis of the solar potassium abundance
1
Department of Astronomy, School of Physics, Peking University, Beijing 100871, China
2
Institut für Astronomie und Astrophysik der Universität München, Scheinerstrasse 1, 81679 München, Germany e-mail: gehren@usm.lmu.de
3
National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
Received:
23
February
2006
Accepted:
31
March
2006
We investigate the formation of neutral potassium lines in the
solar photosphere based on extensive statistical equilibrium calculations to
determine the solar potassium abundance. The computations are based on a
68-level potassium atomic model. Hydrogen collisions were supplied with an
enhancement factor 
to the classical Drawin formula.
Synthetic line profiles calculated from the level populations according to the
NLTE departure coefficients were compared with the observed solar spectral
atlas. The solar potassium abundance based on theoretical model atmospheres is
log ε
, which agrees with the
meteoritic value of 
compiled by Lodders.
Key words: line: formation / line: profiles / Sun: abundances
© ESO, 2006
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