Proceedings of the International Astronomical Union

Contributed Papers

Silver Stars

Camilla Juul Hansena1 and Francesca Primasa1

a1 European Southern Observatory, Karl-Schwarzschild-Strasse 2, D-85748 Garching, Germany email: cjhansen@eso.org, fprimas@eso.org

Abstract

The rapid neutron-capture process (r-process), which produces some of the heaviest elements, is not well understood. Obtaining accurate abundances of these heavy elements (Z > 38) is important, both in the context of the chemical evolution of the Galaxy and for understanding the site(s) and process(es) of formation of those elements. We have determined elemental abundances for several r-process elements, notably silver, from high resolution VLT/UVES spectra. Silver was chosen because it is predominantly a light r-process element (38 < Z < 50), and little is known about its formation and evolution in the Galaxy. Here, we present our preliminary results.

Keywords

  • Silver;
  • abundances;
  • r-process