CCD photometry of a delta Scuti variable in an open cluster. III. V 465 Persei in the alpha Persei cluster

Details CCD photometry of a delta Scuti variable in an open cluster. III. V 465 Persei in the alpha Persei cluster CCD photometry of a delta Scuti variable in an open cluster. III. V 465 Persei in the alpha Persei cluster

Feb 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26as..128..111k&link_type=abstract

Astronomy and Astrophysics Supplement, v.128, p.111-116

Astronomy and Astrophysics

Astrophysics

3

Stars: Individual: V 465 Per, Stars: Oscillations, Stars: Delta Sct

Scientific paper

We present the results of real-time CCD differential photometry for the delta 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; f_1=14.040 c/d, f_2=17.208 c/d, f_3=33.259 c/d and f_4=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 f_1 and f_3, respectively. For each frequency, pulsation constants of Q_1=0.0520+/-0.008, Q_2=0.0425+/-0.006, Q_3=0.0220+/-0.003 and Q_4=0.0533+/-0.008 were derived from several observational properties of V 465 Per. Only the value of Q_3 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.

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