2004A&A...413.1105Y


Query : 2004A&A...413.1105Y

2004A&A...413.1105Y - Astronomy and Astrophysics, volume 413, 1105-1114 (2004/1-3)

The chemical composition of the mild barium star HD 202109.

YUSHCHENKO A.V., GOPKA V.F., KIM C., LIANG Y.C., MUSAEV F.A. and GALAZUTDINOV G.A.

Abstract (from CDS):

We present chemical abundances of the mild barium star HD 202109 (ζ 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=80000, 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.

Abstract Copyright:

Journal keyword(s): line: identification - stars: abundances - stars: atmospheres - stars: evolution - stars: binaries - stars: individual: HD 202109

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 BPS CS 31082-0001 RG* 01 29 31.1311443552 -16 00 45.495314460 12.527 12.427 11.642 11.189 10.713 CEMP 277 0
2 * chi Lup SB* 15 50 57.5382881 -33 37 37.795321 3.77 3.909 3.946     B9III 300 0
3 * zet Cyg SB* 21 12 56.1859347 +30 13 36.895667 4.96 4.20 3.21 2.52 2.04 G8+III-IIIaBa0.5 333 0
4 BPS CS 22892-0005 * 22 04 53.9962796328 -15 50 11.623645716   14.53 14.10     ~ 5 0

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2023.02.08-02:50:04

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