Photometry of long-period Algol binaries. I. Five-color light curves of the interacting eclipsing binary RS Cephei.
Abstract
We present differential uvby I photometry of RS Cephei obtained between September 1980 and August 1985 at the Prairie and Mount Laguna Observatories. We compare these new observations with those of Hall et al. (1984), obtained between November 1965 and February 1972. Circumstellar light weakened between 1972 and 1980, and ultraviolet primary eclipse totality became more nearly flat, though sloping. Some color anomalies remain during totality. Small brightness fluctuations, most prominent in the ultraviolet outside eclipses, were also present at all wavelengths within primary eclipse and were not produced by the extended circumstellar disk.
- Publication:
-
The Astronomical Journal
- Pub Date:
- June 1986
- DOI:
- 10.1086/114119
- Bibcode:
- 1986AJ.....91.1418O
- Keywords:
-
- Eclipsing Binary Stars;
- Light Curve;
- Stellar Color;
- Stellar Spectrophotometry;
- Ubv Spectra;
- Radiant Flux Density;
- Spectral Energy Distribution;
- Stellar Envelopes;
- Astronomy