Neutron captures produce the vast majority of abundances of elements heavier than iron in
the Universe. Beyond the classical slow (s) and rapid (r) processes, there is observational …

Understanding the origin of the elements has been a decades-long pursuit, with many open
questions remaining. Old stars found in the Milky Way and its dwarf satellite galaxies can …

Probing the origin of r-process elements in the universe represents a multidisciplinary
challenge. We review the observational evidence that probes the properties of r-process …

The decomposition of the Solar system abundances of heavy isotopes into their s-and r-
components plays a key role in our understanding of the corresponding nuclear processes …

The slow neutron capture process in massive stars (weak s process) produces most of the s-
process isotopes between iron and strontium. Neutrons are provided by the 22 Ne (α, n) 25 …

Rotation was shown to have a strong impact on the structure and light element
nucleosynthesis in massive stars. In particular, models including rotation can reproduce the …

We provide a set of stellar evolution and nucleosynthesis calculations that applies
established physics assumptions simultaneously to low-and intermediate-mass and massive …

We present models for the slow neutron-capture process (s-process) in asymptotic giant
branch stars of metallicity [Fe/H]=− 2.3 and masses 0.9–6 M☉. We encountered different …

We present Magellan/MIKE and Keck/HIRES high-resolution spectra of six red giant stars in
the dwarf galaxy Segue 1. Including one additional Segue 1 star observed by Norris et al …

The ultra-faint dwarf (UFD) galaxy Reticulum 2 (Ret 2) was recently discovered in images
obtained by the Dark Energy Survey. We have observed the four brightest red giants in Ret 2 …