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

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 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