Project information
Physics of hot stars and stellar systems with hot components
- Project Identification
- GA205/02/0445
- Project Period
- 1/2002 - 12/2004
- Investor / Pogramme / Project type
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Czech Science Foundation
- Standard Projects
- MU Faculty or unit
- Faculty of Science
- Cooperating Organization
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Astronomical Institute of the ASCR, v. v. i.
- Responsible person doc. RNDr. Jiří Kubát, CSc.
The present common project of Bmo and Ondoejov stellar astronomers is aimed at the layout of current thorny problems of the physics of hot stars and stellar systems containing hot components. First, we want to contribute to elucidation of mutual relation among magnetic field geometry, spectroscopic and photometric spots or belts occurring on the surface of chemically peculiar (CP) stars. For the localization of spots of chemical elements by the analysis of their line profile variations a special techniqu of Doppler imaging will be used. Particularly, by means of a detailed study of a prototype of cool CP2 stars CQ UMa we want to solve the puzzle of the variable depression in energy distribution around 410 nm, typical for such a type of CP stars. Various hypotheses explaining the origin of Be-phenomenon will be tested by the observation of several B star with emission lines in their spectra. From the both theoretical and observational point of view will be studied extended atmospheres of hot stars and th
Publications
Total number of publications: 34
2005
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The dependence of the energy distribution on the abundances of A-star atmosphere models
Proceedings of the IAUS224: The A-Star Puzzle, year: 2005
2004
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Decoupling of helium in the winds of chemically peculiar stars
Variable Stars in the Local Group, IAU Colloquium 193, year: 2004
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Frictional heating of a corona
Stars as Suns: Activity, Evolution, and Planets, IAU Symposium, Vol. 219, 2004, A. K. Dupree and A. O. Benz, Eds., year: 2004
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Challenges to the theories of B stars circumstellar environment
Astronomische Nachrichten, year: 2004, volume: 325, edition: 1
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Kinematic model inversions of hot star recurrent DAC data - tests against dynamical CIR models
Astronomy and Astrophysics, year: 2004, volume: 2004, edition: 417
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Multicomponent stellar winds of He chemically peculiar stars
Magnetic stars, year: 2004
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NLTE models of line-driven stellar winds I. Method of calculation and first results for O stars
Astronomy and Astrophysics, year: 2004, volume: 2004, edition: 417
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Properties and nature of Be stars XXIII. Long-term variations and physical properties of kappa Dra
Astronomy and Astrophysics, year: 2004, volume: 35, edition: 419
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Radiation induced coronal wind in late B stars
New Astronomy, year: 2004, volume: 2004, edition: 9
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Spectroscopic study of Am SB2 eclipsing binary HR 6611
Magnetic stars, Proceedings of the International Conference, year: 2004