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Fundamental parameters and origin of the very eccentric binary 41 Draстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Tokovinin A., Balega Y.Y., Pluzhnik E.A., Shatsky N.I., Gorynya N.A., Weigelt G.
- Журнал: Astronomy and Astrophysics
- Том: 409
- Год издания: 2003
- Издательство: Springer Verlag
- Местоположение издательства: Germany
- Первая страница: 245
- Последняя страница: 250
- DOI: 10.1051/0004-6361:20031064
- Аннотация: The evolutionary status and origin of the most eccentric known binary in a quadruple system, 41 Dra (e=0.9754, period 3.413 yr), are discussed. New observations include the much improved combined speckle-interferometric orbit, resolved photometry of the components and their spectroscopic analysis. The age of the system is 2.5 +/- 0.2 Gyr; all four components are likely coeval. The high eccentricity of the orbit together with known age and masses provide a constraint on the tidal circularization theory: it seems that the eccentric orbit survived because the convective zones of the F-type dwarfs were very thin. Now as the components of 41 Dra are leaving the Main Sequence, their increased interaction at each periastron passage may result in detectable changes in period and eccentricity.
- Добавил в систему: Шатский Николай Иванович