30 citations · 58 across the 9 of their papers we have counts for
9 papers
Pulsation in the atmosphere of roAp stars
O. Kochukhov
High time resolution spectroscopy of roAp stars at large telescopes has led to a major breakthrough in our understanding of magnetoacoustic pulsations in these interesting objects.…
Magnetic Doppler Imaging of Ap stars
J. Silvester, G. A. Wade, O. Kochukhov +2
Historically, the magnetic field geometries of the chemically peculiar Ap stars were modelled in the context of a simple dipole field. However, with the acquisition of increasingly…
A search of very low amplitude magnetoacoustic pulsations with HARPS
O. Kochukhov, T. Ryabchikova, S. Bagnulo +1
We have obtained time-resolved spectroscopic observations for a sample of 10 cool Ap stars using the ultra-stable spectrograph HARPS at the ESO 3.6-m telescope. The aim of our stud…
Zeeman split lines in CP stars: a discovery of low-contrast fields in slow rotators?
O. Kochukhov
We show that high-resolution observations of resolved Zeeman split lines can be used to obtain new constraints on the stellar magnetic field geometry. In particular, the contrast o…
New generation model atmospheres for chemically peculiar stars
O. Kochukhov, D. Shulyak
The atmospheric structure of chemically peculiar stars deviates from that of normal stars with similar fundamental parameters due to unusual chemistry, abundance inhomogeneities an…
Magnetic fields, spots and weather in chemically peculiar stars
O. Kochukhov
New observational techniques and sophisticated modelling methods has led to dramatic breakthroughs in our understanding of the interplay between the surface magnetism, atomic diffu…