The advent of the second data release of the Gaia mission, in combination with data from
large spectroscopic surveys, is revolutionizing our understanding of the Galaxy. Thanks to …

The Gaia mission has revolutionized our view of the Milky Way and its satellite citizens. The
field of Galactic Archaeology has been piecing together the formation and evolution of the …

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 …

We present the Pristine survey, a new narrow-band photometric survey focused on the
metallicity-sensitive Ca H&K lines and conducted in the Northern hemisphere with the wide …

Abstract The Sloan Extension for Galactic Understanding and Exploration 2 (SEGUE-2)
obtained 128,288 low-resolution spectra (R∼ 1800) of 118,958 unique stars in the first year …

This paper presents the detailed abundances and r-process classifications of 126 newly
identified metal-poor stars as part of an ongoing collaboration, the R-Process Alliance. The …

We present the JWST Resolved Stellar Populations Early Release Science (ERS) program.
We obtained 27.5 hr of NIRCam and NIRISS imaging of three targets in the Local Group …

ABSTRACT Pristine_183. 6849+ 04.8619 (P1836849) is an extremely metal-poor ([Fe/H]=−
3.3±0.1) star on a prograde orbit confined to the Galactic disc. Such stars are rare and may …

We use Gaia DR2 astrometric and photometric data, published radial velocities and mesa
models to infer distances, orbits, surface gravities, and effective temperatures for all ultra …

Gaia EDR3 data were used to identify potential members in the outskirts of three ultra-faint
dwarf (UFD) galaxies: Coma Berenices (> 2 Rh), Ursa Major I (∼ 4 Rh), and Boötes I (∼ 4 …