33 citations · 64 across the 4 of their papers we have counts for
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Three nearby K-giants with planets: Accurate determination of basic parameters, including an analysis of metallicity based on Fe I lines
L. S. Lyubimkov, D. V. Petrov, D. B. Poklad
Fundamental parameters are determined for three bright, nearby K-giants, β Gem (K0 III), μ Leo (K2 III), and α Tau (K5 III). It is notable that around all three stars the giant pla…
Oxygen abundance and the N/C vs N/O relation for AFG supergiants and bright giants
L. S. Lyubimkov, S. A. Korotin, D. L. Lambert
Non-LTE analysis (LTE is local thermodynamic equilibrium) of the oxygen abundances for 51 Galactic A-, F- and G-type supergiants and bright giants is performed. In contrast with ca…
Light chemical elements in stars: mysteries and unsolved problems
L. S. Lyubimkov
The first eight elements of the periodic table are discussed: H, He, Li, Be, B, C, N, and O. They are referred to as key elements, given their important role in stellar evolution.…
Analysis of the non-LTE lithium abundance for a large sample of F-, G-, and K-giants and supergiants
L. S. Lyubimkov, D. V. Petrov
A five-dimensional interpolation method and corresponding computer program are developed for using published calculations to determine the non-LTE correction {Δ\}NLTE to the lithiu…
The N/O ratio in early B-type main sequence stars as an indicator of their evolution
L. S. Lyubimkov
It is shown that, in the case of early B-type main-sequence stars, of the three ratios N/C, C/O, and N/O which are regarded as indicators of stellar evolution, the ratio N/O is mor…
Lithium in stellar atmospheres: observations and theory
L. S. Lyubimkov
Of all the light elements, lithium is the most sensitive indicator of stellar evolution. This review discusses current data on the abundance of lithium in the atmospheres of A-, F-…