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Barium and iron abundances in red giants

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Fernández Villacañas, J. L. and Rego Fernández, Manuel and Cornide Castro-Piñeiro, Manuel (1990) Barium and iron abundances in red giants. Astronomical journal, 99 (6). pp. 1961-1970. ISSN 0004-6256

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Official URL: http://dx.doi.org/10.1086/115478




Abstract

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.


Item Type:Article
Additional Information:

© 1990 American Astronomical Society.
© 1990 IOP Publishing.

Uncontrolled Keywords:Astronomy; Astrophysics
Subjects:Sciences > Physics > Astrophysics
Sciences > Physics > Astronomy
ID Code:31390
Deposited On:30 Jul 2015 11:34
Last Modified:10 Dec 2018 15:05

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