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ACTIVITY CYCLES OF SOLAR-TYPE STAR HD 111395статья
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: Dmitrienko E.S., Savanov I.S.
- Журнал: Astrophysics
- Том: 68
- Номер: 2
- Год издания: 2025
- Издательство: Kluwer Academic/Plenum Publishers
- Местоположение издательства: United States
- Первая страница: 153
- Последняя страница: 159
- DOI: 10.1007/S10511-025-09865-2
- Аннотация: In this study, we analyzed the behavior of the bright solar-type star HD 111395, with the aim of further comparing its photospheric, chromospheric, and coronal activity. HD 111395 is found to exhibit a higher level of activity than the Sun. The rotation periods Prot are in the range of 15.25 to 18.88 days, indicating a differential nature of surface rotation. Based on data from Sectors 23 and 49 of the TESS archive, estimates were made of the spot coverage and spot areas on its surface: 7,500 and 8,900 millionths of the solar hemisphere (MSH) for Sectors 23 and 49, respectively. These values exceed the solar mean values but are comparable to the maximum levels observed on the Sun. From Kamogata Widefield Survey (KWS), activity cycle periods Pcycl of 930 days (2.5 years), 1,830 days (5.0 years), and 3,800 days (10.4 years) were identified, while ASAS measurements yielded a period of 1,800 days (4.9 years). The obtained results are compared with activity cycles previously established based on chromospheric indicators and long-term variations in X-ray flux.
- Добавил в систему: Дмитриенко Елена Сергеевна