Vintergatans utveckling Stefan Gesse - IT - Lunds universitet
Vintergatans utveckling Stefan Gesse - IT - Lunds universitet
Vintergatans utveckling Stefan Gesse - IT - Lunds universitet
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Examensarbete i astronomi, naturvetenskapliga fakulteten, <strong>Lunds</strong> <strong>universitet</strong><br />
Enrichment of s- and r-process products in the Milky Ways thin and<br />
thick disk<br />
<strong>Stefan</strong> <strong>Gesse</strong><br />
Astronomy<br />
Autumn 2002<br />
Abstract in English<br />
Stellar abundances and chemical trends have been studied for 67 F- and G-dwarf stars in the<br />
solar neighbourhood. Based on high-resolution spectra, abundances for Eu, Nd and Y have<br />
been measured by matching syntetic spectra to the observed spectra. Eu is almost a pure r-<br />
process element, Y is almost a pure s-process element and Nd is a god mixing of the two<br />
processes. The abundances have been compared with the abundances for Ba, Mg and Fe. The<br />
results gives a hint of how the thin and thick disk in the Milky Way have evolved.
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