Light element abundances in carbon-enhanced metal-poor stars
نویسندگان
چکیده
منابع مشابه
Light element abundances in carbon-enhanced metal-poor stars
We model the evolution of the abundances of light elements in carbon-enhanced metalpoor (CEMP) stars, under the assumption that such stars are formed by mass transfer in a binary system. We have modelled the accretion of material ejected by an asymptotic giant branch star on to the surface of a companion star. We then examine three different scenarios: one in which the material is mixed only by...
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We present carbon and strontium abundances for 100 metal-poor stars measured from R∼7000 spectra obtained with the Echellette Spectrograph and Imager at the Keck Observatory. Using spectral synthesis of the G-band region, we have derived carbon abundances for stars ranging from [Fe/H]= −1.3 to [Fe/H]= −3.8. The formal errors are ∼ 0.2 dex in [C/Fe]. The strontium abundance in these stars was me...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2009
ISSN: 0035-8711,1365-2966
DOI: 10.1111/j.1365-2966.2009.14394.x