Oleg Kochukhov
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Oleg Kochukhov has a total of 10 co-authors. Here are the top co-authors by number of shared publications:
Austin F. Gulliver
Department of Physics and Astronomy, Brandon University, Manitoba, Canada
2 shared publicationsNikolai Piskunov
Department of Astronomy and Space Physics, Uppsala University, SE 75120 Uppsala, Sweden
2 shared publicationsSaul J. Adelman
Department of Physics, 29409 Charleston, South Carolina, USA
2 shared publicationsG. A. Wade
Department of Physics, Royal Military College of Canada, Box 17000, Kingston, Ontario, K7K 4B4 Canada
1 shared publication- John Darlington Landstreet
Armagh Observatory and Planetarium College Hill BT61 9DG Armagh Northern Ireland UK
1 shared publication L. Sangalli
Department of Physics, Royal Military College of Canada, Box 17000, Kingston, Ontario, K7K 4B4 Canada
1 shared publication
Latest Publications
- 24 June 2007
- Published by Springer Nature in Nature Physics
- Vol. 3 (8) , 526-529
Weather in stellar atmosphere revealed by the dynamics of mercury clouds in α Andromedae
- 24 June 2007
- Published by Springer Nature in Nature Physics
- Vol. 3 (8) , 526-529
Weather in stellar atmosphere revealed by the dynamics of mercury clouds in α Andromedae
- Open Access
Weather in stellar atmosphere: the dynamics of mercury clouds in alpha Andromedae
The formation of long-lasting structures at the surfaces of stars is commonly ascribed to the action of strong magnetic fields. This paradigm is supported by observations of evolving cool spots in the Sun and active late-type stars, and stationary chemical spots in the early-type magnetic stars. However, results of our seven-year monitoring of mercury spots in non-magnetic early-type star alpha Andromedae show that the picture of magnetically-driven structure formation is fundamentally incomplete. Using an indirect stellar surface mapping technique, we construct a series of 2-D images of starspots and discover a secular evolution of the mercury cloud cover in this star. This remarkable structure formation process, observed for the first time in any star, is plausibly attributed to a non-equilibrium, dynamical evolution of the heavy-element clouds created by atomic diffusion and may have the same underlying physics as the weather patterns on terrestrial and giant planets.
Open AccessWeather in stellar atmosphere: the dynamics of mercury clouds in alpha Andromedae
The formation of long-lasting structures at the surfaces of stars is commonly ascribed to the action of strong magnetic fields. This paradigm is supported by observations of evolving cool spots in the Sun and active late-type stars, and stationary chemical spots in the early-type magnetic stars. However, results of our seven-year monitoring of mercury spots in non-magnetic early-type star alpha Andromedae show that the picture of magnetically-driven structure formation is fundamentally incomplete. Using an indirect stellar surface mapping technique, we construct a series of 2-D images of starspots and discover a secular evolution of the mercury cloud cover in this star. This remarkable structure formation process, observed for the first time in any star, is plausibly attributed to a non-equilibrium, dynamical evolution of the heavy-element clouds created by atomic diffusion and may have the same underlying physics as the weather patterns on terrestrial and giant planets.
- Open Access
- 19 January 2004
- Published by EDP Sciences in Astronomy & Astrophysics
- Vol. 414 (2) , 613-632
Magnetic Doppler imaging of 53 Camelopardalis in all four Stokes parameters
Astronomy & Astrophysics (A&A) is an international journal which publishes papers on all aspects of astronomy and astrophysics
- 19 January 2004
- Published by EDP Sciences in Astronomy & Astrophysics
- Vol. 414 (2) , 613-632
Open AccessMagnetic Doppler imaging of 53 Camelopardalis in all four Stokes parameters
Astronomy & Astrophysics (A&A) is an international journal which publishes papers on all aspects of astronomy and astrophysics