2016/09/01 by L. I. Mashonkina, Lyudmila Mashonkina, Tatyana Sitnova +3 · 40 citations
Physics and Astronomy · #Abundance (ecology) #Line (geometry) #Metallicity #Non-equilibrium thermodynamics #Solar and Space Plasma Dynamics #Spectral line #Stars #Statistical Mechanics and Entropy #Stellar atmosphere #Stellar, planetary, and galactic studies #Thermodynamic equilibrium #astro-ph.SR
paper · pdf · doi:10.1134/s1063773716080028
published in Astronomy Letters 42(9), 606-615 (Pleiades Publishing) · 14 pages, 7 figures, published in Astronomy Letters, 42, 606-615 (2016)
openalex publication_date 2016/09/01 · arxiv created 2016/09/09 · openalex created_date 2016/09/23 · arxiv updated 2016/10/05 · openalex updated_date 2026/08/05
We have performed statistical equilibrium calculations for Ca I–Ca II, Ti I–Ti II, and Fe I–Fe II by taking into account the nonequilibrium line formation conditions (the non-LTE approach) in model atmospheres of giant stars with effective temperatures 4000 K ≤ T eff ≤ 5000 K and metal abundances −4 ≤ [Fe/H] ≤ 0. The dependence of departures from LTE on atmospheric parameters has been analyzed. We present the non-LTE abundance corrections for 28 Ca I lines, 42 Ti I lines, 54 Ti II lines, and 262 Fe I lines and a three-dimensional interpolation code to obtain the non-LTE correction online for an individual line and specified atmospheric parameters.