The Ellipsoidal System BD +56°2190
Abstract
BD + is found to be a variable with a range of , a sinusodial light curve, and a period 0f0d5713698 It is also found to be a spectroscopic binary with the same period. The variable linewidths indicate that the system is an unresolved double4ined nearly-contact binary seen at an inclination of about 4O . The light variation is probably due to ellipsoidal distortions of the stars, rather than to eclipses. Key words: spectroscopic binary - variable star
- Publication:
-
Publications of the Astronomical Society of the Pacific
- Pub Date:
- October 1974
- DOI:
- 10.1086/129664
- Bibcode:
- 1974PASP...86..677B