62 citations · 296 across the 12 of their papers we have counts for
6 papers · 1 filter
Science with the World Space Observatory - Ultraviolet
Ana I. Gomez de Castro, Isabella Pagano, Mikhail Sachkov +4
The World Space Observatory-Ultraviolet (WSO-UV) will provide access to the UV range during the next decade. The instrumentation on board will allow to carry out high resolution im…
Spectroscopic study of pulsations in the atmosphere of roAp star 10 Aql
M. Sachkov, O. Kochukhov, T. Ryabchikova +3
We present the analysis of spectroscopic time-series observations of the roAp star 10 Aql. Observations were carried out in July 2006 with the UVES and SARG spectrographs simultane…
Pulsation tomography of rapidly oscillating Ap stars. Resolving the third dimension in peculiar pulsating stellar atmospheres
T. Ryabchikova, M. Sachkov, O. Kochukhov +1
We present detailed analysis of the vertical pulsation mode cross-section in ten rapidly oscillating Ap (roAp) stars based on spectroscopic time-series observations. The aim of thi…
Pulsation in the atmosphere of the roAp star HD 24712. I. Spectroscopic observations and radial velocity measurements
T. Ryabchikova, M. Sachkov, W. W. Weiss +10
We have investigated the structure of the pulsating atmosphere of one of the best studied rapidly oscillating Ap stars, HD 24712. For this purpose we analyzed spectra collected dur…
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…
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…