62 citations · 159 across the 7 of their papers we have counts for
7 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…
The Cool Giant HD 77361 - A Super Li-Rich Star
L. S. Lyubimkov, B. M. Kaminsky, V. G Metlov +3
Super Li-rich stars form a very small and enigmatic group whose existence cannot be explained in terms of the standard stellar evolution theory. The goal of our study is to check t…
Determining the effective temperatures of G- and K-type giants and supergiants based on observed photometric indices
L. S. Lyubimkov, D. B. Poklad
A method for determining the effective temperature Teff of G- and K-type giants and supergiants is proposed. The method is based on the use of two photometric indices free from the…
Carbon abundance and the N/C ratio in atmospheres of A-, F- and G-type supergiants and bright giants
Leonid S. Lyubimkov, David L. Lambert, Sergey A. Korotin +2
Based on our prior accurate determination of fundamental parameters for 36 Galactic A-, F- and G-type supergiants and bright giants (luminosity classes I and II), we undertook a no…
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…
Nitrogen Enrichment in Atmospheres of A- and F- Type Supergiants
Leonid S. Lyubimkov, David L. Lambert, Sergey A. Korotin +3
Using new accurate fundamental parameters of 30 Galactic A and F supergiants, namely their effective temperatures Teff and surface gravities log g, we implemented a non-LTE analysi…
Accurate Fundamental Parameters or A, F, and G-type Supergiants in the Solar Neighbourhood
Leonid S. Lyubimkov, David L. Lambert, Sergey I. Rostopchin +2
The following parameters are determined for 63 Galactic supergiants in the solar neighbourhood: effective temperature Teff, surface gravity log g, iron abundance log e(Fe), microtu…