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Astron. Astrophys. Suppl. Ser. 137, 451-456

Radial velocities[*][*]

IX. Measurements of 2800 B2-F5 stars for Hipparcos

S. Grenier1 - M.-O. Baylac 1 - L. Rolland2 - R. Burnage2 - F. Arenou1 - D. Briot1 - F. Delmas3 - M. Duflot4 - V. Genty4 - A.E. Gómez1 - J.-L. Halbwachs5 - M. Marouard1 - E. Oblak6 - A. Sellier1

Send offprint request: M.-O. Baylac

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

Received January 19; accepted April 1, 1999


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 80Åmm-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 3.0kms-1 with three observations. A new MK spectral classification is estimated for all stars.

Key words: techniques: radial velocities -- stars: early-type -- stars: fundamental parameters

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