Non-LTE oxygen line formation in 3D hydrodynamic model stellar atmospheres
The O I 777 nm lines are among the most commonly used diagnostics for the oxygen abundances in the atmospheres of FGK-type stars. However, they form in conditions that are far from local thermodynamic equilibrium (LTE). We explore the departures from LTE of atomic oxygen, and their impact on O I lines, across the STAGGER-grid of three-dimensional hydrodynamic model atmospheres. For the O I 777 nm triplet, we find significant departures from LTE. These departures are larger in stars with larger...[Show more]
|Collections||ANU Research Publications|
|Source:||Monthly Notices of the Royal Astronomical Society|
|Access Rights:||Open Access|
|01_Amarsi_Non-LTE_oxygen_line_formation_2016.pdf||5.82 MB||Adobe PDF|
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