Astron. Astrophys. Suppl. Ser. 130, 311-315

New times of minima and ephemeris for several OB eclipsing binaries

P. Mayer ¹ - P.G. Niarchos ² - R. Lorenz ³ - M. Wolf ¹ - G. Christie ⁴

Send offprint request: P. Mayer

1 - Astronomical Institute, Charles University, V Holesovickách 2, 180 00 Praha 8, Czech Republic
2 - Section of Astrophysics, Astronomy and Mechanics, Department of Physics, University of Athens, 157 83 Zographos, Athens, Greece
3 - Dr. Remeis-Sternwarte Bamberg, Astronomical Institute, University Erlangen-Nürnberg, Sternwartstraße 7, 96049 Bamberg, Germany - Astronomical Observatory, Auckland, New Zeeland

Received August 18; accepted December 12, 1997

Abstract:

New times of minimum light were measured for several early-type eclipsing binaries: V337 Aql, V1182 Aql, V1331 Aql, IU Aur, QZ Car and V382 Cyg. The O-C diagram for these systems is discussed and new ephemeris is given for AH Cep; observation of AQ Cir is added. It is shown that the scatter of times of minima is several times larger than the measuring errors for most of the binaries studied.

Key words: stars: binaries: eclipsing -- stars: early type