A&A Supplement series, Vol. 127, January II 1998, 201-206

Received March 4; accepted May 12, 1997

Variations of Ap stars in the Geneva system,

J. Manfroid^, - M. Burnet - P. Renson

  Institut d'Astrophysique, Université de Liège, avenue de Cointe 5, B-4000 Liège, Belgium
  Observatoire de Genève, CH-1290 Sauverny, Switzerland

Abstract:

The photometric behaviour of 21 Ap stars has been analyzed from observations obtained in the Geneva system. Variability has been detected for 9 Ap stars, as well as for a star which initially was a comparison star. Preliminary values for the periods are presented as well as an analytical description of the light curves.

keywords: stars: chemically peculiar; variable

• 1. Introduction
• 2. The observational material
• 3. Analysis of the variations
• 4. Discussion
• References