A Differential Abundance Analysis of the Wide Binary Pair HD 219542 A and B

Details A Differential Abundance Analysis of the Wide Binary Pair HD 219542 A and B A Differential Abundance Analysis of the Wide Binary Pair HD 219542 A and B

Oct 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003pasj...55.1005s&link_type=abstract

Publications of the Astronomical Society of Japan, Vol.55, No.5, pp. 1005-1014

Astronomy and Astrophysics

Astronomy

9

Stars: Abundances, Stars: Atmosphere, Stars: Individual (Hd 219542 A, B), Stars: Planetary Systems

Scientific paper

The abundances of 22 elements (Li through Zr) in the A and B components of the visual pair HD 219542 were determined and compared using a differential analysis technique. Both components were found to be metal rich, [Fe/H] = +0.13, in the brighter component (A) and [Fe/H] = +0.08 in the fainter component (B). The abundances of three elements (Sc, Ti, and Fe) are definitely higher (by 0.05dex) in component A than in component B. On the other hand, both components have nearly identical abundances of the light element Si. No evidence has been found for differences in the abundances for C, O, Na, Mg, Al, S, Ca, V, Cr, Mn, Co, Ni, Cu, Zn, Sr, Y, and Zr. No clear correlation has been found between the differences in the abundance between the two components and the condensation temperature (Tc).

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