The Pristine survey: XXVI. Chemical abundances of subgiant stars of the extremely metal-poor stream C-19
Context. The C-19 stellar stream is the most metal-poor stream known to date. While its wth and velocity dispersion indicate a dwarf galaxy origin, its metallicity spread and abundance patterns are more similar to those of globular clusters (GCs). If it is indeed of GC origin, its extremely low metallicity ([Fe/H]=‑3.4, estimated from giant stars)
Bonifacio, P. et al.
Fecha de publicación:
3
2025