Oct 18 – 22, 2021
INAF Osservatorio Astrofisico di Arcetri (Italy) and online
Europe/Rome timezone

Neutron-Capture elements with HRMOS

Oct 19, 2021, 9:00 AM


Gabriele Cescutti (Istituto Nazionale di Astrofisica (INAF))


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))

Presentation materials