Search for and study of photometric variability in magnetic white dwarfs
- Авторы: Valeev A.F.1,2, Antonyuk K.A.3,1, Pit N.V.3, Moskvitin A.S.1,2, Grauzhanina A.O.1, Gadelshin D.R.1, Kolesnikov S.V.3,4, Zhuzhulina E.A.5, Burlakova T.E.1, Galazutdinov G.A.6,7,1, Gutaev A.G.2, Zhuchkov R.Y.2,7, Ikhsanova A.I.2, Zhukov D.G.2, Joshi A.8, Pandey J.C.8, Kholtygin A.F.9, Valyavin G.G.1
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Учреждения:
- Special Astrophysical Observatory
- Kazan (Volga Region) Federal University
- Crimean Astrophysical Observatory
- Astronomical Observatory
- V. I. Vernadsky Crimean Federal University
- Instituto de Astronomia
- Main (Pulkovo) Astronomical Observatory
- Aryabhatta Research Institute of Observational Sciences
- Sobolev Astronomical Institute
- Выпуск: Том 72, № 1 (2017)
- Страницы: 44-50
- Раздел: Article
- URL: https://journals.rcsi.science/1990-3413/article/view/212360
- DOI: https://doi.org/10.1134/S1990341317030051
- ID: 212360
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Аннотация
We report the results of photometric observations of a number of magnetic white dwarfs in order to search for photometric variability in these stars. These V-band observations revealed significant variability in the classical highly magnetized white dwarf GRW+70◦8247 with a likely period from several days to several dozen days and a half-amplitude of about 0.m 04. Our observations also revealed the variability of the well-known white dwarf GD229. The half amplitude of its photometric variability is equal to about 0.m 005, and the likely period of this degenerate star lies in the 10–20 day interval. This variability is most likely due to the rotation of the stars considered.We also discuss the peculiarities of the photometric variability in a number of other white dwarfs. We present the updated “magnetic field–rotation period” diagram for the white dwarfs.
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Об авторах
A. Valeev
Special Astrophysical Observatory; Kazan (Volga Region) Federal University
Автор, ответственный за переписку.
Email: azamat@sao.ru
Россия, Nizhnii Arkhyz, 369167; Kazan, 420008
K. Antonyuk
Crimean Astrophysical Observatory; Special Astrophysical Observatory
Email: azamat@sao.ru
Россия, Nauchnyi, Crimea, 298409; Nizhnii Arkhyz, 369167
N. Pit
Crimean Astrophysical Observatory
Email: azamat@sao.ru
Россия, Nauchnyi, Crimea, 298409
A. Moskvitin
Special Astrophysical Observatory; Kazan (Volga Region) Federal University
Email: azamat@sao.ru
Россия, Nizhnii Arkhyz, 369167; Kazan, 420008
A. Grauzhanina
Special Astrophysical Observatory
Email: azamat@sao.ru
Россия, Nizhnii Arkhyz, 369167
D. Gadelshin
Special Astrophysical Observatory
Email: azamat@sao.ru
Россия, Nizhnii Arkhyz, 369167
S. Kolesnikov
Crimean Astrophysical Observatory; Astronomical Observatory
Email: azamat@sao.ru
Россия, Nauchnyi, Crimea, 298409; Odessa, 65014
E. Zhuzhulina
V. I. Vernadsky Crimean Federal University
Email: azamat@sao.ru
Россия, Simferopol, Crimea, 295007
T. Burlakova
Special Astrophysical Observatory
Email: azamat@sao.ru
Россия, Nizhnii Arkhyz, 369167
G. Galazutdinov
Instituto de Astronomia; Main (Pulkovo) Astronomical Observatory; Special Astrophysical Observatory
Email: azamat@sao.ru
Чили, Antofagasta; St. Petersburg, 196140; Nizhnii Arkhyz, 369167
A. Gutaev
Kazan (Volga Region) Federal University
Email: azamat@sao.ru
Россия, Kazan, 420008
R. Zhuchkov
Kazan (Volga Region) Federal University; Main (Pulkovo) Astronomical Observatory
Email: azamat@sao.ru
Россия, Kazan, 420008; St. Petersburg, 196140
A. Ikhsanova
Kazan (Volga Region) Federal University
Email: azamat@sao.ru
Россия, Kazan, 420008
D. Zhukov
Kazan (Volga Region) Federal University
Email: azamat@sao.ru
Россия, Kazan, 420008
Arti Joshi
Aryabhatta Research Institute of Observational Sciences
Email: azamat@sao.ru
Индия, Nainital, 263001
J. Pandey
Aryabhatta Research Institute of Observational Sciences
Email: azamat@sao.ru
Индия, Nainital, 263001
A. Kholtygin
Sobolev Astronomical Institute
Email: azamat@sao.ru
Россия, St. Petersburg, 198504
G. Valyavin
Special Astrophysical Observatory
Email: azamat@sao.ru
Россия, Nizhnii Arkhyz, 369167
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