The Of-Type Spectroscopic Binary BD+40°4220.
Abstract
The components of the spectroscopic binary BD+ are of spectral types Of and 09 and the period is 6.600 + 0.002 days. The mass of the 09 star (probably a giant or supergiant) is about four times that of the Of. Rather pronounced periodic variations in visibility of some of the spectral features are briefly discussed.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- November 1951
- DOI:
- 10.1086/145489
- Bibcode:
- 1951ApJ...114..477W