Radial velocities in the direction of the cluster NGC 2287

Details Radial velocities in the direction of the cluster NGC 2287 Radial velocities in the direction of the cluster NGC 2287

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26as...76..305a&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 76, no. 2, Dec. 1988, p. 305-316. In French.

Astronomy and Astrophysics

Astrophysics

5

Astronomical Photography, Open Clusters, Radial Velocity, Binary Stars, Peculiar Stars, Photographic Plates, Variable Stars

Scientific paper

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.

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