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Интеллектуальная Система Тематического Исследования НАукометрических данных |
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Cyclic Variability in Brightness of the Young Solar Analog BE Cetiстатья
- Авторы: Bondar’ N.I., Katsova M.M.
- Сборник: ArXiV.org.e-Print
- Серия: astro-ph. SR
- Год издания: 2023
- Издательство: Cornell University Press
- Местоположение издательства: United States
- Первая страница: 1
- Последняя страница: 6
- Номер статьи: 2304.14794
- DOI: 10.1134/S0016793222070076
- Аннотация: BE Cet is a young solar analog with an age of 0.6 Gyr and a rotation period of 7.655 days. Accordingto chromospheric and photospheric indices, its activity is higher than the solar one. An analysis of photometric data on the time interval between 1977 and 2019 shows the presence of only 6.76 yrcyclic variations in the mean brightness with an amplitude of 0.02 mag. The obtained cycle is 1–2 yrshorter in comparison with the chromospheric cycle determined earlier, whose length was estimated tobe 9 or 7.6 yr. Parameters of the cycle, its amplitude and duration change slightly in different epochs.The short-term light variations due to rotational modulation occur with an increase in amplitude up to0.05 mag near the activity cycle minimum and a decrease in its maximum. Some events of a rapidincrease in brightness of 0.2–0.6 mag may be considered as flares.
- Добавил в систему: Кацова Мария Михайловна