BI CRU : a new symbiotic star.
Abstract
A Mount Stromlo spectrogram of BI Cru taken in 1962 shows emission lines of H I, He I, He II, Fe II, N III, and the forbidden O III, forbidden Ne III, and forbidden S II transitions superposed on a weak bluish continuum. A spectrogram by Allen in 1974 shows emission lines of H I and Fe II and possibly weak He I, forbidden Fe II, and forbidden O I lines superposed on an M-star absorption spectrum. The object is evidently a symbiotic star showing large variations in its spectral character. Significant differences exist in the mean ion velocities and appear to be correlated with ionization potential.
- Publication:
-
Publications of the Astronomical Society of the Pacific
- Pub Date:
- August 1980
- DOI:
- 10.1086/130697
- Bibcode:
- 1980PASP...92..479H
- Keywords:
-
- Binary Stars;
- Line Spectra;
- Stellar Spectra;
- Variable Stars;
- Absorption Spectra;
- Emission Spectra;
- Helium;
- Iron;
- M Stars;
- Nitrogen;
- Astrophysics