activity
19982026
most citedFirst Stars VIII -- Enrichment of the neutron-capture elements in the early Galaxy

339 citations · 487 across the 14 of their papers we have counts for

collaborators

15 papers

astro-ph.SR2026

Abundance analysis of three new extremely metal-poor stars, including one CEMP-s star

P. François, T. Suda, S. Wanajo +5

We report a detailed abundance analysis of three extremely metal-poor (EMP) stars thanks to spectra obtained with the high-dispersion spectrograph (HDS) at the Subaru telescope. Th…

astro-ph.GA2026

TOPoS VII. Age-metallicity relation in the Galactic halo and assembly of the Milky Way

P. Bonifacio, Y. Lebreton, I. Koutsouridou +8

One technique for determining stellar ages is to compare the position of a star in the Hertzsprung-Russell diagram to theoretical stellar evolutionary tracks. The sub-giant evoluti…

astro-ph.GA2026

TYC 170-1218-1: A new r-process-enhanced extremely metal-poor star, rich in Th

E. Caffau, P. Bonifacio, L. Sbordone +5

Context . Extremely metal-poor (EMP) stars are formed from gas clouds enriched by one or a few supernova explosions belonging to the first stellar generation and this very limited…

astro-ph.GA2026

The primordial nature of the C-19 stellar stream

Kim A. Venn, Zhen Yuan, Nicolas F. Martin +32

Stellar streams, remnants of compact star systems stretched out by the tidal forces of the Milky Way, offer a unique way to study stellar populations that formed billions of years…

astro-ph.SR2025

KOALA, a new ATLAS9 database -- I. Model atmospheres, opacities, fluxes, bolometric corrections, magnitudes and colours

A. Mucciarelli, P. Bonifacio, C. Lardo

We present the KOALA database, a new set of LTE, line-blanketed model atmospheres calculated with the code ATLAS9, together with the corresponding Opacity Distribution Functions an…

astro-ph.SR2025★ 4 cited

Unveiling the nature of HE 0107-5240

E. Caffau, M. Steffen, P. Molaro +27

The vast majority of the most iron-poor stars in the Galaxy exhibit a strong carbon enhancement, with C/H ratios only about two orders of magnitude below solar. This unusual chemic…