|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ПсковГУ |
||
On the Causes of Brightness Variability of a Young Star BP Tauстатья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 1 октября 2025 г.
- Авторы: Burlak M.A., Grankin K.N., Dodin A.V., Zharova A.V., Ikonnikova N.P., Kiryukhina V.A., Lamzin S.A., Safonov B.S., Strakhov I.A.
- Журнал: Astrophysical Bulletin
- Том: 80
- Номер: 2
- Год издания: 2025
- Первая страница: 279
- Последняя страница: 293
- DOI: 10.1134/s1990341325600255
- Аннотация: We have constructed and analyzed the secular light curve of BP Tau, a classical T Tau star. Wave-like variations in the average brightness level of the star with an amplitude of ΔB ≈ 0.2 mag and a characteristic time of several decades were found. We present arguments in favor of the concept that three deep (ΔB ~ 1.5 mag) dimming episodes lasting from one hour to several days are associated with the eclipse of a hot (accretion) spot by the dust infalling on the star along with gas. It is possible that such eclipses, albeit with a smaller amplitude, are the reason for the lack in BP Tau of a strictly expressed brightness variation periodicity related to axial rotation. We found that in the distance range of 0.1 to 200 AU, BP Tau has no companions with masses greater than 0.2 Mo. Possible reasons of brightness and color index variability of the star on different time scales are discussed.
- Добавил в систему: Ламзин Сергей Анатольевич