Photometry of the classical cepheid SU Cygni.
Abstract
UBVRI photometry of SU Cyg is presented, originally with a view to searching for possible eclipses in this binary system. Revised elements of period and maximum-light epoch were found necessary to represent photoelectric observations spanning the last 25 years. The observations are used to derive the spectral type of the binary companion; the result of B6 V confirms an earlier conclusion by Madore (1977). Intensity means of magnitude and colors for the Cepheid, freed of the effects of the companion, are derived.
- Publication:
-
Publications of the Astronomical Society of the Pacific
- Pub Date:
- February 1979
- DOI:
- Bibcode:
- 1979PASP...91...67F
- Keywords:
-
- Astronomical Photometry;
- Binary Stars;
- Cepheid Variables;
- Companion Stars;
- Light Curve;
- Radial Velocity;
- Stellar Magnitude;
- Stellar Mass;
- Stellar Spectra;
- Astronomy;
- Binaries:Cepheids;
- Cepheids:Periods;
- Cepheids:Photometry