The Peculiar Spectrum of the Extreme Helium Star BD -9°4395
Abstract
The spectrum of the extreme helium star BD -9°4395 has already been noted for emission lines of He I 3889 Å and C II 4267 Å. Further anomalies in the He I and C II spectra have been observed, including the identification of additional emission lines, asymmetry in the He I line profiles and variability in all features. It is suggested that these features may be associated with other evidence for non-radial pulsations in BD -9°4395.
- Publication:
-
IAU Colloq. 87: Hydrogen Deficient Stars and Related Objects
- Pub Date:
- 1986
- DOI:
- 10.1007/978-94-009-4744-3_8
- Bibcode:
- 1986ASSL..128...81J
- Keywords:
-
- B Stars;
- Helium;
- Stellar Composition;
- Stellar Spectra;
- Variable Stars;
- Emission Spectra;
- Line Shape;
- Stellar Oscillations;
- Astrophysics