3 papers
astro-ph.SR2013
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…
astro-ph2005
HD 178892 - a cool Ap star with extremely strong magnetic field
T. Ryabchikova, O. Kochukhov, D. Kudryavtsev +6
We report a discovery of the Zeeman resolved spectral lines, corresponding to the extremely large magnetic field modulus <Bs>=17.5 kG, in the cool Ap star HD 178892. The mean longi…
astro-ph2005
Inhomogeneous distribution of mercury on the surfaces of rapidly rotating HgMn stars
O. Kochukhov, N. Piskunov, M. Sachkov +1
Starspots are usually associated with the action of magnetic fields at the stellar surfaces. However, recently an inhomogeneous chemical distribution of mercury was found for the m…