Stromgren photometry of the low amplitude delta Scuti star beta Cassiopeiae.
Abstract
Uvby (beta) photometric observations of the delta Scuti type star Beta Cassiopeiae are presented. Analysis of the data using both Fourier Transform and classical O-C methods establishes Beta Cas as a monoperiodic pulsator with a period of 0.10091d. The physical parameters of this star are determined. The analysis of the phase shifts between observed light and color variations suggests that Beta Cas can be a nonradial pulsator, but a discrepant amplitude ratio Delta (b-y)/Delta y is observed.
- Publication:
-
Astronomy and Astrophysics Supplement Series
- Pub Date:
- December 1992
- Bibcode:
- 1992A&AS...96..429R
- Keywords:
-
- Stellar Oscillations;
- Stellar Spectrophotometry;
- Variable Stars;
- Fourier Transformation;
- Light Curve;
- Power Spectra;
- Radial Velocity;
- Astrophysics