CCD photometry of a δ Scuti variable in an open cluster

III. V 465 Persei in the α Persei cluster

¹ Korea Astronomy Observatory, Taejon, 305-348, Korea
² Department of Astronomy, Seoul National University, Seoul, 151-742, Korea

Send offprint request to: S.-L. Kim

Received: 9 October 1996
Accepted: 16 June 1997

Abstract

We present the results of real-time CCD differential photometry for the δ Scuti variable V 465 Per. The observations were performed for thirteen nights between November, 1994 and January, 1995. Total 3345 points of differential V magnitudes were collected during the observation period of 76.4 hours. From the Fourier analysis, we have detected four frequencies as follows; f₁=14.040 c/d, f₂=17.208 c/d, f₃=33.259 c/d and f₄=13.721 c/d. Two frequencies of 12.50 c/d and 33.49 c/d detected previously by Slovak (1978, ApJ 223, 192) may correspond to our f₁ and f₃, respectively. For each frequency, pulsation constants of , , and were derived from several observational properties of V 465 Per. Only the value of Q₃ is found to be within the range of theoretical p-mode oscillations and the other ones show large differences relative to the theoretical values. The high Q-values might be interpreted as the occurrence of g-mode oscillations in V 465 Per, even though it can not rule out the possibility of systematic errors (Breger 1990; Delta Scuti Star Newsletter, 2, 13) related to rotational velocity.