33 citations · 38 across the 3 of their papers we have counts for
6 papers
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 abundance in atmospheres of F- and G-type supergiants and bright giants
Leonid S. Lyubimkov, David L. Lambert, Bogdan M. Kaminsky +3
We present a non-local thermodynamic equilibrium abundance analysis of the resonance doublet Li I at 6707.8 A for 55 Galactic F and G supergiants and bright giants. The derived lit…