RT Journal Article
T1 Barium and iron abundances in red giants
A1 Fernández Villacañas, J. L.
A1 Rego Fernández, Manuel
A1 Cornide Castro-Piñeiro, Manuel
AB 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.
PB IOP Publishing ltd
SN 0004-6256
YR 1990
FD 1990-06
LK https://hdl.handle.net/20.500.14352/59668
UL https://hdl.handle.net/20.500.14352/59668
LA eng
NO © 1990 American Astronomical Society.© 1990 IOP Publishing.
DS Docta Complutense
RD 17 abr 2025