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- W4384281815 abstract "Detailed chemical abundances of very metal-poor (VMP, [Fe/H] < -2) stars are important for better understanding the First Stars, early star formation and chemical enrichment of galaxies. Big on-going and coming high-resolution spectroscopic surveys provide a wealth of material that needs to be carefully analysed. For VMP stars, their elemental abundances should be derived based on the non-local thermodynamic equilibrium (non-LTE = NLTE) line formation because low metal abundances and low electron number density in the atmosphere produce the physical conditions favorable for the departures from LTE. The galactic archaeology research requires homogeneous determinations of chemical abundances. For this purpose, we present grids of the 1D-NLTE abundance corrections for the Na I, Mg I, Ca I, Ca II, Ti II, Fe I, Zn I, Zn II, Sr II, and Ba II lines, which are used in the galactic archaeology research. The range of atmospheric parameters represents VMP stars on various evolutionary stages and covers effective temperatures from 4000 to 6500~K, surface gravities from log g = 0.5 to log g = 5.0, and metallicities $-5.0 le$ [Fe/H] $le -2.0$. The data is publicly available, and we provide the tools for interpolating in the grids online." @default.
- W4384281815 created "2023-07-15" @default.
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- W4384281815 date "2023-07-14" @default.
- W4384281815 modified "2023-09-30" @default.
- W4384281815 title "1D non-LTE corrections for chemical abundance analyses of very metal-poor stars" @default.
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- W4384281815 doi "https://doi.org/10.1093/mnras/stad2114" @default.
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