Radial velocities^*,**

IX. Measurements of 2800 B2-F5 stars for Hipparcos

¹ Observatoire de Paris-Meudon, D.A.S.G.A.L., UMR 8633 du CNRS, F-92195 Meudon Cedex, France
² Observatoire de Haute Provence, UPR 9049 du CNRS, F-04870 Saint Michel l'Observatoire, France
³ Institut d'Astrophysique de Paris, CNRS, 98bis Bd. Arago, F-75014 Paris, France
⁴ Observatoire de Marseille, F-13248 Marseille Cedex 04, France
⁵ Observatoire de Strasbourg, 11 rue de l'Université, F-67000 Strasbourg, France
⁶ Observatoire de Besançon, BP. 1615, F-25010 Besançon Cedex, France

Send offprint request to: M.-O. Baylac

Received: 19 January 1999
Accepted: 1 April 1999

Abstract

Radial velocities have been determined for a sample of 2930 B2-F5 stars, 95% observed by the Hipparcos satellite in the north hemisphere and 80% without reliable radial velocity up to now. Observations were obtained at the Observatoire de Haute Provence with a dispersion of 80 Å mm^-1 with the aim of studying stellar and galactic dynamics. Radial velocities have been measured by correlation with templates of the same spectral class. The mean obtained precision is 3.0 km s^-1 with three observations. A new MK spectral classification is estimated for all stars.