Speaker
Gabriele Cescutti
(Istituto Nazionale di Astrofisica (INAF))
Description
Recently, we have studied barium lines in high-quality spectra of two metal-poor giants in the
Galactic halo. The hyperfine splitting effects on the barium lines seem to confirm the theoretical expectation that both r-process events and also s-process contribution by rotating massive stars have polluted the ancient halo of our Galaxy.
Nowadays, this kind of result can be achieved only for a tiny fraction of Galactic stars and future surveys cannot tackle this problem due to the low resolution (<30’000) of their spectra.
Only HRMOS with its unparalleled capabilities will allow to change this situation and provide the final answers to the origins of the Heavy elements.
| Type | invited talk |
|---|
Primary authors
Gabriele Cescutti
(Istituto Nazionale di Astrofisica (INAF))
Mariagrazia Franchini
(Istituto Nazionale di Astrofisica (INAF))
