Carbon, nitrogen and oxygen abundances in Sirius and Vega.
Abstract
Carbon, nitrogen, and oxygen abundances are obtained from C I, N I, and O I high excitation permitted lines in the spectra of the standard A star Vega and the 'hot' Am star Sirius. Vega has normal abundances. Relative to Vega, Sirius is C deficient by 0.60 dex, N enhanced by 0.22 dex, and O deficient by 0.27 dex.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- March 1982
- DOI:
- 10.1086/159777
- Bibcode:
- 1982ApJ...254..663L
- Keywords:
-
- A Stars;
- Abundance;
- Carbon Stars;
- Peculiar Stars;
- Stellar Atmospheres;
- Stellar Spectra;
- Atmospheric Composition;
- Line Spectra;
- Nitrogen;
- Oxygen;
- Stellar Spectrophotometry;
- Astrophysics