Kinematic Peculiarities of Gould Belt Starsv
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منابع مشابه
Kinematics of young stars ( I ) : Local irregularities ⋆
The local velocity field of young stars is dominated by the galactic rotation, the kinematics of the Gould Belt and the nearest OB associations and open clusters, and the kinematics of the spiral structure. We reexamined here this local velocity field by using a large sample of nearby O and B stars from the Hipparcos Catalogue. The high quality astrometric data are complemented with a careful c...
متن کاملKinematics of young stars ? I . Local irregularities
The local velocity field of young stars is dominated by the galactic rotation, the kinematics of the Gould Belt and the nearest OB associations and open clusters, and the kinematics of the spiral structure. We re-examined here this local velocity field by using a large sample of nearby O and B stars from the Hipparcos Catalogue. The high quality astrometric data are complemented with a careful ...
متن کاملYoung Stellar Kinematic Groups and Their Relation with Young Open Clusters, Star Forming Regions and the Gould Belt
Stellar kinematic groups (SKG) are kinematically coherent groups of stars that share a common origin. We have compiled (Montes et al. 1999; 2000) a sample of late-type stars of previously established members and possible new candidates to different young SKG Myr)). In order to better understand the origin of these young SKG, and to be able to identify late-type stars members of the classical an...
متن کاملThe Gould Belt, star formation, and the local interstellar medium
The history of the local medium, within a few hundred parsecs, is dominated by the evolution of the Gould Belt. The event that triggered this star-forming region and molded the gas distribution is still unknown. Its orientation and extent are reasonably well determined and its expansion matches the space and velocity distributions of many large HI and H2 clouds within half a kiloparsec. The pre...
متن کاملVertical motion and expansion of the Gould Belt
The kinematics of the Gould Belt is considered taking into account its orientation in space and the motions of its member stars parallel and perpendicular to the galactic plane. An analysis of Hipparcos data for these stars, complemented with published radial velocities, shows that there is a mild gradient along the galactic plane in the velocity component perpendicular to it. The maintenance o...
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