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Detection of Optical Flares on the Selected G-M Dwarfs from Long-term Photometric Seriesстатья
- Авторы: Bondar’ N.I., Katsova M.M., Shlyapnikov A.A.
- Сборник: ArXiV.org.e-Print
- Серия: astro-ph. SR
- Год издания: 2022
- Издательство: Cornell University Press
- Местоположение издательства: United States
- Первая страница: 1
- Последняя страница: 6
- Номер статьи: 2207.0924v1
- DOI: 10.1134/S0016793221070057
- Аннотация: We have carried out a search for flares from the analysis of light curves for 12 active G, K, and M dwarfs. As sources of data we used ground-based observations in 2000–2020 from the photometric databases ASAS, SuperWASP, KWS. Events of low-amplitude brightening (∆V < 0.25 mag), which possibly could be flares, were revealed for 11 stars. A large number of such increases in brightness were found on K dwarfs. Events ofincreasing in V -magnitudes to 0.5 mag or more were detected on light curves of one G star, BE Cet, and two M dwarfs. For three flares we could follow their development with time. We have estimated the duration of these flares; they lasted more than an hour, but less than 3 hours. In most cases we could not determine a lifetime of the suggested flares, but we believe that most of the probable flares on the investigated cool dwarfs are short-lived, on the order of several minutes.
- Добавил в систему: Кацова Мария Михайловна