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Chemical Composition of the RS CVn-type Star 33 Piscium
G. Barisevičius, G. Tautvaišienė, S. Berdyugina +2
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…
Chemical composition of evolved stars in the open cluster NGC 2506
Šarūnas Mikolaitis, Gražina Tautvaišienė, Raffaele Gratton +2
In this study we present abundances of 12^C, 13^C, N, O and up to 26 other chemical elements in two first ascent giants and two core-helium-burning 'clump' stars of the open cluste…
Chemical Composition of the RS CVn-type Star 29 Draconis
G. Barisevičius, G. Tautvaišienė, S. Berdyugina +2
Photospheric parameters and chemical composition are determined for the single-lined chromospherically active RS CVn-type star 29 Draconis (HD 160538). From the high resolution spe…
Chemical composition of evolved stars in the open cluster IC 4651
Šarūnas Mikolaitis, Gražina Tautvaišienė, Raffaele Gratton +2
We present an analysis of high-resolution spectra of three core-helium-burning "clump" stars and two first ascent giants in the open cluster IC 4651. Atmospheric parameters (T_eff,…