91 citations · 230 across the 7 of their papers we have counts for
7 papers
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…
Are Local Group Dwarf Spheroidal Galaxies the First Safe Planet-hosting Environments?
Stefano Ciabattini, Stefania Salvadori, Leonardo Testi
We explore whether Local Group dwarf spheroidal (dSph) galaxies might have hosted Earth-like planets dwelling unexposed for several billions of years to major galactic threats to l…
Evidence of Pop~III stars' chemical signature in neutral gas at z~6. A study based on the E-XQR-30 spectroscopic sample
Alessio Sodini, Valentina D'Odorico, Stefania Salvadori +16
This study explores the metal enrichment signatures attributed to the first generation of stars (PopIII) in the Universe, focusing on the E-XQR-30 sample. We aim to identify traces…
Faint LAEs near z>4.7 CIV absorbers revealed by MUSE
C. Gonzalo Diaz, Emma Ryan-Weber, Wouter Karman +5
We present the results from the search for Lyman Alpha emitters (LAEs) in the proximity of 11 CIV absorption systems at in the spectrum of the QSO J1030+0524, using data…
Probing the existence of very massive first stars
S. Salvadori, P. Bonifacio, E. Caffau +4
We present a novel approach aimed at identifying the key chemical elements to search for the (missing) descendants of very massive first stars exploding as Pair Instability Superno…
TOPoS: III. An ultra iron-poor multiple CEMP system
E. Caffau, P. Bonifacio, M. Spite +15
One of the primary objectives of the TOPoS survey is to search for the most metal-poor stars. Our search has led to the discovery of one of the most iron-poor objects known, SDSS\,…
VLT/FLAMES spectroscopy of Red Giant Branch stars in the Carina dwarf spheroidal galaxy
B. Lemasle, V. Hill, E. Tolstoy +6
The ages of individual Red Giant Branch stars (RGB) can range from 1 Gyr old to the age of the Universe, and it is believed that the abundances of most chemical elements in their p…