Spectrum analysis of the extremely metal-poor carbon dwarf star G 77-61.
Abstract
The spectrum of the carbon star G 77-61 is analyzed by means of model atmospheres. The authors confirm the conjecture - based on astrometric data - that this object is a star near to the main sequence and show that the metal abundances are extremely low, e.g. [Fe/H] = -5.6. The pattern can be understood as the consequence of binary evolution and hypernova processing. The effective temperature is 4200K.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- January 1988
- Bibcode:
- 1988A&A...189..194G
- Keywords:
-
- Carbon Stars;
- Metallicity;
- Spectrum Analysis;
- Stellar Composition;
- Stellar Evolution;
- Stellar Spectra;
- Subdwarf Stars;
- Abundance;
- Binary Stars;
- Cyanides;
- Line Spectra;
- Mass Transfer;
- Stellar Atmospheres;
- Stellar Models;
- Stellar Spectrophotometry;
- Supernovae;
- Astrophysics