Chemical abundances for cyanogen-weak giants

Details Chemical abundances for cyanogen-weak giants Chemical abundances for cyanogen-weak giants

Feb 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apjs...75..579l&link_type=abstract

Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 75, Feb. 1991, p. 579-610.

Astronomy and Astrophysics

Astrophysics

47

Cyanogen, Giant Stars, Late Stars, Stellar Atmospheres, Stellar Composition, Abundance, Charge Coupled Devices, Stellar Magnitude, Stellar Mass

Scientific paper

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.

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