Barium and iron abundances in red giants

Details Barium and iron abundances in red giants Barium and iron abundances in red giants

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990aj.....99.1961f&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 99, June 1990, p. 1961-1970.

Astronomy and Astrophysics

Astronomy

21

Abundance, Barium, Iron, Red Giant Stars, Metallicity, Peculiar Stars, Spectral Line Width, Stellar Color

Scientific paper

An intermediate-dispersion abundance analysis has been carried out on a sample of 21 barium and 14 comparison stars. The excess of barium over iron has been used as the most representative indicator of peculiarity. These excesses are higher in the peculiar stars than in the nonpeculiar stars. Particularly interesting is the case of HD 67447, included in the comparison stars, with an excess Ba/Fe abundance = 1.61, probably a new barium star. A trend indicating a possible anticorrelation between barium overabundance and metallicity favors the suggestion that the barium strong group is older than the barium weak one.

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