Identification of lines in the spectrum of the quasar 0237 233
Abstract
The emission and absorption lines (δδ3716 4290) in the spectrum of the quasar 0237 233 are identified within the framework of the PLS model. The available evidence indicates that it is a helium star. Similarities between the spectral properties of 0237 233 and the star Upsilon Sagittarii are pointed out. Predictions are made for the absorption-line spectrum which falls outside δδ3716 4290 and also for an expected discontinuity at δ2600.
- Publication:
-
Astrophysics and Space Science
- Pub Date:
- November 1988
- DOI:
- 10.1007/BF00639790
- Bibcode:
- 1988Ap&SS.149..197V
- Keywords:
-
- Line Spectra;
- Metallicity;
- Quasars;
- Spectrum Analysis;
- Absorption Spectra;
- Chromium;
- Emission Spectra;
- Iron;
- Stellar Models;
- Titanium;
- Astrophysics