ST Camelopardalis: A doubly periodic semiregular variable star
Abstract
The BAAVSS data for the semiregular variable ST Camelopardalis is analysed showing periods of 201.0 and 368.6 days (ratio of approximately 1.8). This star was not previously known to be doubly periodic. The amplitudes of the periods tend to vary inversely, the variate itself having a period of about 2200 days. Pulsational mode switching is discussed as a possible mechanism for these effects.
- Publication:
-
Journal of the British Astronomical Association
- Pub Date:
- February 2001
- Bibcode:
- 2001JBAA..111...40H