322 citations · 3.7k across the 69 of their papers we have counts for
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Program package for the analysis of high resolution high signal-to-noise stellar spectra
N. Piskunov, T. Ryabchikova, Yu. Pakhomov +4
The program package SME (Spectroscopy Made Easy), designed to perform an analysis of stellar spectra using spectral fitting techniques, was updated due to adding new functions (iso…
NLTE abundances of C, O, Ca, Ti, and Fe in the reference BAF-type stars
Tatyana Sitnova, Tatyana Ryabchikova, Sofya Alexeeva +1
We present accurate methods of abundance determination based on the non-local thermodynamic equilibrium (NLTE) line formation for carbon, oxygen, calcium, titanium, and iron in the…
Impact of NLTE on determinations of atmospheric parameters and chemical abundances of very metal-poor stars
Lyudmila Mashonkina, Tatyana Sitnova, Yuri Pakhomov +1
Based on high-resolution spectral observations for a sample of very metal-poor stars, we investigate how well stellar chemical abundances can be derived with available theoretical…
Influence of inelastic collisions with hydrogen atoms on the non-LTE modelling of Ca I and Ca II lines in late-type stars
L. Mashonkina, T. Sitnova, A. K. Belyaev
We perform the non-local thermodynamic equilibrium (NLTE) calculations for Ca I-II with the updated model atom that includes new quantum-mechanical rate coefficients for Ca I + H I…
The formation of the Milky Way halo and its dwarf satellites, a NLTE-1D abundance analysis. I. Homogeneous set of atmospheric parameters
L. Mashonkina, P. Jablonka, Yu. Pakhomov +2
We present a homogeneous set of accurate atmospheric parameters for a complete sample of very and extremely metal-poor stars in the dwarf spheroidal galaxies (dSphs) Sculptor, Ursa…