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Stellar population and evolution of galaxies in groups: the NGC2300 groupстатья
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: 1 апреля 2017 г.
- Авторы: Afanasiev V.L., Silchenko O.K., Proshina I.S.
- Журнал: Astrophysical Bulletin
- Том: 71
- Номер: 4
- Год издания: 2016
- Первая страница: 395
- Последняя страница: 407
- DOI: 10.1134/S1990341316040039
- Аннотация: Using panoramic and long-slit spectroscopy at the 6-m telescope of SAO RAS, we studied the stellar population and kinematics of five early-type disc galaxies—members of the NGC2300 group. The evolution of galaxies appears to be absolutely out of synch: while the average age of the stars in the central regions of the galaxies located close to the center of the group ranges from 2 to 7 Gyr, the peripheral spiral galaxies have old nuclei and bulges, with the ages of 10-15 Gyr. The brightest galaxy of the NGC 2300 group, which up to now has been considered to be lenticular, of the SA0 type, turned out to be extremely hot dynamically: its bulge rotates slowly, v/ σ = 0.06, and the outer parts do not rotate at all. We conclude that the kinematics of the stellar component of NGC 2300 indicates that it is not a disc galaxy, but a triaxial spheroid.
- Добавил в систему: Сильченко Ольга Касьяновна