Chemical Composition of the RS CVn-type Star 33 Piscium

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

doi:10.1515/astro-2017-0268

Chemical Composition of the RS CVn-type Star 33 Piscium

Solar and Stellar Astrophysics 2018-03-14 v2

Authors: G. Barisevičius , G. Tautvaišienė , S. Berdyugina , Y. Chorniy , I. Ilyin

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Abstract

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: T_eff = 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.

Keywords

stellar abundances RS CVn stars 33 Piscium chemical composition first dredge-up MARCS model atmospheres carbon isotopes

Cite

@article{arxiv.1105.5650,
  title  = {Chemical Composition of the RS CVn-type Star 33 Piscium},
  author = {G. Barisevičius and G. Tautvaišienė and S. Berdyugina and Y. Chorniy and I. Ilyin},
  journal= {arXiv preprint arXiv:1105.5650},
  year   = {2018}
}

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