Neutral oxygen spectral line formation revisited with new collisional data: large departures from LTE at low metallicity
Aims: A detailed study is presented, including estimates of the impact on elemental abundance analysis, of the non-local thermodynamic equilibrium (non-LTE) formation of the high-excitation neutral oxygen 777 nm triplet in model atmospheres representative of stars with spectral types F to K. Methods: We have applied the statistical equilibrium code
Fabbian, D. et al.
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6
2009