Astron. Astrophys. Suppl. Ser. 136, 285-292

Pulsation of the $\delta$ Scuti star VZ Cancri

J.-N. Fu ¹ - S.-Y. Jiang²

Send offprint request: J.-N. Fu

1 - Laboratoire d'Astrophysique de Toulouse, Observatoire Midi-Pyrénées, 14 avenue Édouard Belin, F-31400 Toulouse, France
e-mail: fu@astro.ast.obs-mip.fr
2 - Beijing Astronomical Observatory, Chinese Academy of Sciences, Beijing 100080, China
e-mail: jianglh@public.east.cn.net

Received August 25, 1997; accepted January 5, 1999

Abstract:

After the "$\rm O-C$'' technique is used to study the pulsation of the $\delta$ Scuti star VZ Cnc with the times of maximum light listed in the literature and a newly-determined time based on new photometry for this star, some high-quality photometry light curves in the literature are analysed by the Fourier decomposition, showing that there are more than 2 frequencies in the pulsation of this star, which might be one possible explanation of the existence of the large scatter in the "$\rm O-C$'' diagram.

Key words: $\delta$ Sct variable -- VZ Cnc -- oscillations