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Periodic pattern in the residual velocity field of OB-Associationsстатья
Дата последнего поиска статьи во внешних источниках: 29 мая 2015 г.
- Авторы: Mel'nik A.M., Dambis A.K., Rastorguev A.S.
- Журнал: Astronomical and Astrophysical Transactions
- Том: 20
- Номер: 1
- Год издания: 2001
- Издательство: Cambridge Scientific Publishers
- Местоположение издательства: Cambridge
- Первая страница: 107
- Последняя страница: 110
- DOI: 10.1080/10556790108208194
- Аннотация: An analysis of the space velocity field of the OB-associations within 3 kpc of the Sun revealed a periodic pattern in the residual radial velocity field along the galactic radius-vector with a typical scale length of = 2.0 ± 0.2 and a mean amplitude of fR = 7 ± 1 km s-1. The fact that the radial residual velocities of almost all OB-associations in rich star-gas complexes are directed toward the Galactic center proves that the region considered is inside the corotation circle. The azimuthal velocity field of OB-associations exhibits a well-defined periodicity in the region l < 180° and no periodicity in the region l > 180°. The galactocentric distances of the Cygnus and Perseus arms as inferred from separate analyses of radial and azimuthal residual velocity fields agree with each other within the errors.
- Добавил в систему: Дамбис Андрей Карлович