The Spectroscopic Orbit of TV Cassiopeiae
Abstract
The eclipsing variable TV Cassiopeiae was investigated for its spectroscopic orbit from 21 spectrograms obtained in three seasons. Although the photometric orbit indicates that the fainter body only gives 15 per cent of the light both spectra have been measured. The observations indicate a circular orbit with practical agreement between the spectroscopic and photometric phase. A semi-amplitude of the primary of 87.9 and of the secondary of 150 km, give the brighter star a mass of 1.8 and the fainter 1.0 times the sun. The separation of the two stars is about 8.9 solar radii while from the photometric orbit we obtain the mean radii of the two bodies, which are elliptical in shape, as 2.5 and 2.8 times the sun.
- Publication:
-
Publications of the Dominion Astrophysical Observatory Victoria
- Pub Date:
- April 1922
- Bibcode:
- 1922PDAO....2..141P