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Fluorine in carbon-enhanced metal-poor stars: a binary scenario

Lugaro, Maria Anna; de Mink, S. E.; Izzard, R G; Campbell, S; Karakas, Amanda; Cristallo, S; Pols, O.R.; Lattanzio, John; Straniero, O; Gallino, Roberto; Beers, Timothy C


Aims. A super-solar fluorine abundance was observed in the carbon-enhanced metal-poor (CEMP) star HE 1305+0132 ([F/Fe] = +2.90, [Fe/H] = -2.5). We propose that this observation can be explained using a binary model that involve mass transfer from an asymptotic giant branch (AGB) star companion and, based on this model, we predict F abundances in CEMP stars in general. We discuss wether F can be used to discriminate between the formation histories of most CEMP stars: via binary mass transfer or...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
Source: Astronomy and Astrophysics
DOI: 10.1051/0004-6361:20079169


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