Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics
Scientific paper
2012-01-23
Astronomische Nachrichten, 2011, Vol.332, Issue 9/10, p.925
Astronomy and Astrophysics
Astrophysics
Solar and Stellar Astrophysics
11 figures
Scientific paper
The detailed chemical composition of the atmosphere AY Cet (HD 7672) is determined from a high-resolution spectrum in the optical region. The main atmospheric parameters and the abundances of 22 chemical elements, including key species such as 12C, 13C, N, and O, are determined. A differential line analysis gives T_eff=5080 K, log g=3.0, [Fe/H]=-0.33, [C/Fe]=-0.17, [N/Fe]=0.17, [O/Fe]=0.05, C/N=1.58, and 12C/13C=21. Despite the high chromospheric activity, the optical spectrum of AY Cet provides a chemical composition typical for first ascent giants after the first dredge-up.
Barisevičius G.
Berdyugina Svetlana
Chorniy Y.
Ilyin I. I.
Tautvaisiene Gražina
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