Project information
Multispektrální proměnnost horkých hvězd a její příčiny
- Project Identification
- GAP209/12/0217
- Project Period
- 1/2012 - 12/2014
- 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.
Ackoliv je multispektraln rotacne podmnena promennost horkych hvezd znama jiz po mnoho desetilet,
jej prciny zustavaly az donedavna nejasne. Tento problem se zacal vyjasnovat pote, co jsme aplikovali po-
krocile modely atmosfer hvezd pro predpovezen svetelne promennosti pochazejc z povrchu hvezd posetych
skvrnami. Tento vyzkum vyustil v soucasnou predstavu o promennosti techto hvezd, podle ktere je promen-
nost zpusobena prerozdelenm toku zaren z blzke ultraalove do vzdalene ultraalove oblasti a do oblasti
viditelne a infracervene. Ackoliv byl tento model overen porovnanm s pozorovanymi svetelnymi krivkami,
zasadn overen stale chyb: porovnan ultraalove a infracervene promennosti. Navc byla promennost stu-
dovana pro prlis malo hvezd s pouze omezenym rozmezm parametru. Analyza fotometrickych dat rotujcch
hvezd s povrchovymi skvrnami dovoluje urcen jejich rotacnch period, ktere jsou jednemi z nejdulezitejsch
vyvojovych parametru. Nase analyza promennosti techto hvezd dovol odhalit zmeny rotacnch period s bezprkladnou presnost.
Publications
Total number of publications: 39
2015
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Is sigma Sculptoris Really a Chemically Peculiar Star?
Physics and Evolution of Magnetic and Related Stars, year: 2015
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Modelling of variability of the chemically peculiar star phi Draconis
ASTRONOMY & ASTROPHYSICS, year: 2015, volume: 584, edition: December, DOI
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New Tools for Finding and Testing Weak Periodic Variability
Physics and Evolution of Magnetic and Related Stars, year: 2015
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Preliminary Study of the Moderately Cool Chemically Peculiar Star BS Circini
Physics and Evolution of Magnetic and Related Stars, year: 2015
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Revisiting the rigidly rotating magnetosphere model for sigma Ori E – II. Magnetic Doppler imaging, arbitrary field RRM, and light variability
Monthly Notices of the Royal Astronomical Society, year: 2015, volume: 451, edition: 2, DOI
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Visual and ultraviolet flux variability of the bright CP star theta Aurigae
ASTRONOMY & ASTROPHYSICS, year: 2015, volume: 576, edition: april, DOI
2014
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Abundance mapping of HD 114365
Year: 2014, type: Appeared in Conference without Proceedings
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Ap stars with variable periods
Putting A Stars into Context: Evolution, Environment, and Related Stars, year: 2014
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CP Stars at La Silla
Year: 2014, type: Appeared in Conference without Proceedings
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Modelling the variability of the CP star phi Dra
Putting A Stars into Context: Evolution, Environment, and Related Stars, year: 2014