Influence of Collisions with Hydrogen Atoms on Non-LTE Effects for K I and Ca II in Stellar Atmospheres

We have constructed a new K I model atom using currently available atomic data. We have performed calculations for K I by abandoning the assumption of local thermodynamic equilibrium (non-LTE) for the Sun and three moderately metal-poor dwarf stars. To take into account the inelastic processes in co...

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Veröffentlicht in:	Astronomy letters Jg. 46; H. 9; S. 621 - 629
Hauptverfasser:	Neretina, M. D., Mashonkina, L. I., Sitnova, T. M., Yakovleva, S. A., Belyaev, A. K.
Format:	Journal Article
Sprache:	Englisch
Veröffentlicht:	Moscow Pleiades Publishing 01.09.2020 Springer Nature B.V
Schlagworte:	Abundance Astronomy Astrophysics and Astroparticles Atmosphere Collision rates Dwarf stars Fine structure Hydrogen Hydrogen atoms Line spectra Local thermodynamic equilibrium Metallicity Observations and Techniques Physics Physics and Astronomy Rate constants Stellar atmospheres calcium abundance in stars spectral line formation in non-LTE conditions stellar atmospheres potassium abundance in stars
ISSN:	1063-7737, 1562-6873
Online-Zugang:	Volltext
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