Astron. Astrophys. Suppl. Ser. 134, 545-552

Speckle observations of double and multiple stars at Pic du Midi: Measurements during 1995 and 1997 and new orbits

É. Aristidi¹ - J.-L. Prieur² - M. Scardia³ - L. Koechlin² - R. Avila¹ - M. Carbillet⁴ - B. Lopez⁵ - Y. Rabbia ⁵ - P. Nisenson⁶ - D. Gezari⁶

Send offprint request: É. Aristidi

1 - UMR 6525 Astrophysique, Université de Nice Sophia, Antipolis, Centre National de la Recherche Scientifique, Parc Valrose, 06108 Nice Cedex 2, France
2 - Observatoire Midi Pyrénées, 14 Av. Edouard Belin, 31400 Toulouse, France
3 - Osservatorio Astronomico di Brera, Via E. Bianchi 46, 22055 Merate, Italy
4 - Osservatorio Astrofisico di Arcetri, Largo Enrico Fermi 5, 50125 Firenze, Italy
5 - UMR 6528, Département Fresnel de l'Observatoire de la Côte d'Azur, BP. 4229, 06304 Nice Cedex 4, France
6 - Center for Astrophysics, 60 Garden Street, Cambridge MA 02138, U.S.A.

Received May 27; accepted September 4, 1998

Abstract:

We present speckle observations of 48 double and multiple stars observed with the 2-meter "Télescope Bernard Lyot'' (TBL) in December 1995, January 1997 and June 1997. Angular separations, absolute position angles and relative photometry result from these observations. New orbital elements have been recalculated for 8 double stars.

Key words: techniques: interferometric -- binaries: close