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Chapter and Conference Paper
Accuracy of the determination of the abundances in solar type stars
The accuracy of the abundances are of course especially interesting when compared to some variations observed : the problem is to find if these variations are significantly larger than the uncertainties. The a...
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Chapter and Conference Paper
Nucleosynthesis in the First Galactic Stars
Our aim is to study the detailed chemical composition of the first galactic stars, which contain an important record of the products of nucleosynthesis in the Big Bang and the earliest stellar generations. Sta...
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Chapter and Conference Paper
Lithium in Old Binary Stars
A detailed analysis of high resolution, high signal to noise spectra of twenty metal deficient binaries (−2.9 < [Fe/H] < −0.4) with periods ranging from 220d to 1.8d is presented. For most of the stars, in add...
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Chapter and Conference Paper
Observational Status of Lithium in Stars
Some of the new data about lithium abundance in stars are reviewed here. The data, that seem more directly linked with the problem of the primordial nucleosynthesis, are briefly discussed. In order to reach a ...
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Chapter and Conference Paper
Lithium Abundance in Pop. II Stars
The relation between the lithium abundance observed in Population II stars and the primordial abundance, is still an open question (see Cayrel and Duncan, this meeting). A few recent results are discussed. HIP...
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Chapter and Conference Paper
The ESO Large Programme “First Stars”
In ESO period 65 (April–September 2000) the large programme 165.N-0276, led by Roger Cayrel, began making use of UVES at the Kueyen VLT telescope. Known within the Team and outside as “First Stars”, it was aim...