Chemical Composition of the RS CNn-Type Star 33 Piscium

Barisevišius G.; Tautvaišienė G.; Berdyugina S.; Chorniy Y.; Ilyin I.

doi:10.1515/astro-2017-0268

Open Astronomy (Mar 2011)

Chemical Composition of the RS CNn-Type Star 33 Piscium

Barisevišius G.,
Tautvaišienė G.,
Berdyugina S.,
Chorniy Y.,
Ilyin I.

Affiliations

Barisevišius G.: Institute of Theoretical Physics and Astronomy, Vilnius University, Goštauto 12, Vilnius, LT-01108, Lithuania
Tautvaišienė G.: Institute of Theoretical Physics and Astronomy, Vilnius University, Goštauto 12, Vilnius, LT-01108, Lithuania
Berdyugina S.: Kiepenheuer Institut fur Sonnenphysik, Schoneckstr. 6, D-79104 Freiburg, Germany
Chorniy Y.: Institute of Theoretical Physics and Astronomy, Vilnius University, Goštauto 12, Vilnius, LT-01108, Lithuania
Ilyin I.: Astrophysical Institute Potsdam, An der Sternwarte 16, Potsdam D-14482, Germany

DOI: https://doi.org/10.1515/astro-2017-0268
Journal volume & issue: Vol. 20, no. 1
pp. 53 – 63

Abstract

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Abundances of 22 chemical elements, including the key elements and isotopes such as 12C, 13C, N and O, are investigated in the spectrum of 33 Psc, a single-lined RS CVn-type binary of low magnetic activity. The high resolution spectra were observed on the Nordic Optical Telescope and analyzed with the MARCS model atmospheres. The following main parameters have been determined: Teff = 4750 K, log g = 2.8, [Fe/H] = -0.09, [C/Fe] = -0.04, [N/Fe] = 0.23, [O/Fe] = 0.05, C/N = 2.14, 12C/13C = 30, which show the first-dredge-up mixing signatures and no extra-mixing.

Published in Open Astronomy

ISSN: 2543-6376 (Online)
Publisher: De Gruyter
Country of publisher: Poland
LCC subjects: Science: Astronomy
Website: https://www.degruyter.com/view/j/astro

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