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The chemical composition of the mild barium star HD 202109
Yushchenko, AV; Gopka, VF; Kim, C; Liang, YC; Musaev, FA; Galazutdinov, GA
AbstractWe present chemical abundances of the mild barium star HD 202109 (zeta Cyg) determined from the analysis of a spectrum obtained by using the 2-m telescope at the Peak Terskol Observatory and a high-resolution spectrometer with R = 80 000, signal to noise ratio > 100. We also present the atmospheric parameters of the star determined using various methods including iron-line abundance analysis. For line identifications, we use whole-range synthetic spectra computed from Kurucz's database and the latest lists of spectral lines. Among the determined abundances of 51 elements, those of P, S, K, Cu, Zn, Ge, Rb, Sr, Nb, Mo, Ru, Rh, Pd, In, Sm, Gd, Tb, Dy, Er, Tm, Hf, Os, Ir, Pt, Tl, and Pb were not investigated previously. Assuming that the overabundance pattern of Ba stars is due to binary accretion, the observed abundance pattern of the neutron-capture process elements in HD 202109 can be explained by combining the AGB star nucleosynthesis and the wind accretion scenario.
KeywordLine : Identification Stars : Abundances Stars : Atmospheres Stars : Evolution Stars : Binaries Stars : Individual : Hd 202109
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WOS IDWOS:000187887900034
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Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Odessa Natl Univ, Odessa Astron Observ, UA-65014 Odessa, Ukraine
2.Chonbuk Natl Univ, Dept Earth Sci Educ, Chonju 561756, South Korea
3.Russian Acad Sci, Int Ctr Astron Med & Ecol Res, UA-03680 Kiev, Ukraine
4.Natl Acad Sci Ukraine, UA-03680 Kiev, Ukraine
5.Russian Acad Sci, Special Astrophys Observ, Zelenchuk 369167, Karachaevo Cher, Russia
6.Isaac Newton Inst, Odessa Branch, Odessa, Ukraine
7.Isaac Newton Inst, SAO Branch, St Petersburg, Russia
8.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
9.Observ Paris, GEPI, F-92195 Meudon, France
10.Univ Munich, Univ Sternwarte Munchen, Inst Astron & Astrophys, D-81679 Munich, Germany
Recommended Citation
GB/T 7714
Yushchenko, AV,Gopka, VF,Kim, C,et al. The chemical composition of the mild barium star HD 202109[J]. ASTRONOMY & ASTROPHYSICS,2004,413(3):1105-1114.
APA Yushchenko, AV,Gopka, VF,Kim, C,Liang, YC,Musaev, FA,&Galazutdinov, GA.(2004).The chemical composition of the mild barium star HD 202109.ASTRONOMY & ASTROPHYSICS,413(3),1105-1114.
MLA Yushchenko, AV,et al."The chemical composition of the mild barium star HD 202109".ASTRONOMY & ASTROPHYSICS 413.3(2004):1105-1114.
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