Vitesses radiales dans la direction de l'amas NGC 2287.
Abstract
Mean radial velocities for 72 stars in the direction of NGC 2287 have been determined based on 10 plates obtained with the 40-cm Objective Prism of the La Silla ESO. The radial velocities are given in the IAU system with an accuracy of + or - 5 km/s. It is found that the peculiar star HD 49022 is variable and has an amplitude of 70 km/s. The general velocity diagram has a maximum at about 22 km/s which may represent a mixture of cluster and field stars and an asymmetry at 30 km/s which may be attributed to binary member stars.
- Publication:
-
Astronomy and Astrophysics Supplement Series
- Pub Date:
- December 1988
- Bibcode:
- 1988A&AS...76..305A
- Keywords:
-
- Astronomical Photography;
- Open Clusters;
- Radial Velocity;
- Binary Stars;
- Peculiar Stars;
- Photographic Plates;
- Variable Stars;
- Astrophysics