Spectroscopic study of omicron Per.
Abstract
The spectroscopic binary oPer is analysed in order to ascertain whether it is a Cep star, and to determine, by means of an improvement of Petrie's method (1939), spectral types and absolute magnitudes of the two components; from that, masses, radii and absolute values of the orbital parameters are obtained. These data permit the discussion of the anomalous proper motion of oPer with respect to the association II Per, of which oPer has been considered as a member (Blaauw, 1952). oPer is found to be not a member of the association II Per. Key words: spectroscopic binary - stellar masses - absolute magnitudes La binaire spectroscopique oPer est analys6e afln de savoir Si oPer pent etre conside'r comme une toile du type fiCep, et afin de , au moyen d'un ds'veloppement de la m6thods de Petrie (1939), le type spectral et la magnitude absolue de chacune des deux composantes; on en les masses et les rayons des deux etoiles, et leo grandeurs absolues des orbitaux. Ceo donn6eo permettent de discuter le mouvement propre de oPer, anormal par rapport l'association II Per, dont oPer a 6 conside'r comme niembre (Blaauw, 1952). On trouve que o Per ne pent pas appartenir l'association fl Per.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- January 1972
- Bibcode:
- 1972A&A....16..108F