Chemical Abundances for Cyanogen-weak Giants
Abstract
Atmospheric parameters and detailed chemical abundances are derived for 30 cyanogen-weak giants. The (Fe/H) ratios range from -1.2 to 0.2, show a mean value of -0.20, and have an estimated internal uncertainty of + or - 0.2. Most of the stars have a modern spectral designation of Fe(-); this designation correlates only weakly with the derived (Fe/H) ratio. Light-element abundances and C-12/C-13 ratios are determined for the complete sample. The CNO abundances normalized to Fe collectively do not deviate substantially from that of normal K giants.
- Publication:
-
The Astrophysical Journal Supplement Series
- Pub Date:
- February 1991
- DOI:
- 10.1086/191542
- Bibcode:
- 1991ApJS...75..579L
- Keywords:
-
- Cyanogen;
- Giant Stars;
- Late Stars;
- Stellar Atmospheres;
- Stellar Composition;
- Abundance;
- Charge Coupled Devices;
- Stellar Magnitude;
- Stellar Mass;
- Astrophysics;
- STARS: ABUNDANCES;
- STARS: ATMOSPHERES;
- STARS: LATE-TYPE