The first generation of stars, often called Population III (or Pop III), form from metal-free
primordial gas at redshifts z∼ 30 and below. They dominate the cosmic star-formation …

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 …

Context. The chemo-physical parametrisation of stellar spectra is essential for
understanding the nature and evolution of stars and of Galactic stellar populations. A …

ABSTRACT WEAVE, the new wide-field, massively multiplexed spectroscopic survey facility
for the William Herschel Telescope, saw first light in late 2022. WEAVE comprises a new 2 …

Abstract Our Milky Way should host an ancient, metal-poor, and centrally concentrated
stellar population, which reflects the star formation and enrichment in the few most massive …

Abstract We describe the Milky Way Survey (MWS) that will be undertaken with the Dark
Energy Spectroscopic Instrument (DESI) on the Mayall 4 m telescope at the Kitt Peak …

Gaia Data Release 3 provides novel flux-calibrated low-resolution spectrophotometry for≃
220 million sources in the wavelength range 330 nm≤ λ≤ 1050 nm (XP spectra). Synthetic …

Context. The third Gaia data release (Gaia DR3) contains, beyond the astrometry and
photometry, dispersed light for hundreds of millions of sources from the Gaia prism spectra …

We present an atlas and follow-up spectroscopic observations of 87 thin stream-like
structures detected with the STREAMFINDER algorithm in Gaia DR3, of which 28 are new …

The oldest stars in the Milky Way (born in the first few billion years) are expected to have a
high density in the inner few kpc, spatially overlap** with the Galactic bulge. We use …