Photometric observations of V470 Cygni (HD 228911).
Abstract
Previous photometric observations of this type B2 spectroscopic binary with a 1 d87 period have shown small but not well-defined light variations suggesting that it is an eclipsing binary with a rather small orbital inclination. In the summer of 1974 the authors obtained photoelectrically 2060 individual V observations and 2100 B observations of V470 Cygni at the Pine Mountain Observatory of the University of Oregon. The total light range in both colors is nearly and the form of the light curve suggests that this object is an ellipsoidal binary. A new epoch of primary minimum and peried are derived. Ml of the data combined are insufficient to confirm Pearce's suggestion of apsidal motion. Key words: variable - eclipsing - ellipsoidal
- Publication:
-
Publications of the Astronomical Society of the Pacific
- Pub Date:
- December 1975
- DOI:
- 10.1086/129872
- Bibcode:
- 1975PASP...87..923E