26 citations · 81 across the 10 of their papers we have counts for
10 papers
Abnormal lithium abundance in several Ap-Bp stars
A. Shavrina, N. S. Polosukhina, N. A. Drake +4
Using observations of rapidly rotating roAp star HD 12098, obtained with 6m telescope of SAO RAS in 2005-2008 in nine rotational phases (0.001-0.817), and code V. Tsymbal ROTATE we…
Some evolutionary aspects of the binary stellar systems containing neutron star
O. M. Ulyanov, S. M. Andrievsky, V. F. Gopka +1
The obvious lack of the binary stellar systems that contain neutron stars (NS) is observed at present. Partly it is caused by the fact that it is very difficult to detect neutron s…
Some Statistical Picture of Magnetic CP Stars Evolution
V. F. Gopka, O. M. Ulyanov, S. M. Andrievsky +2
We discuss some statistical results on the evolution of magnetic CP stars in the framework of the supposition about their binary nature.
Interplay between diffusion, accretion and nuclear reactions in the atmospheres of Sirius and Przybylski's star
Alexander Yushchenko, Vera Gopka, Stephane Goriely +8
The abundance anomalies in chemically peculiar B-F stars are usually explained by diffusion of chemical elements in the stable atmospheres of these stars. But it is well known that…
Lithium and its isotopic ratio 6Li/7Li in the atmospheres of some sharp-lined roAp star
A. Shavrina, N. Polosukhina, S. Khan +10
The lines of lithium at 6708 A, and 6103 A, are analyzed in high resolution spectra of some sharp-lined and slowly rotating roAp stars. Three spectral synthesis codes - STARSP, ZEE…
Thorium-rich halo star HD221170: further evidence against the universality of the r-process
Alexander Yushchenko, Vera Gopka, Stephane Goriely +6
We report the abundance determination in the atmosphere of the bright halo star HD221170. The spectra were taken with the Terskol Observatory's 2.0-m telescope with a resolution R=…