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 …

Galactic haloes in a Λ-CDM universe are predicted to host today a swarm of debris resulting
from cannibalized dwarf galaxies. The chemodynamical information recorded in their stellar …

Several lines of evidence suggest that the Milky Way underwent a major merger at z∼ 2 with
the Gaia-Sausage-Enceladus (GSE) galaxy. Here we use H3 Survey data to argue that GSE …

Since the advent of Gaia astrometry, it is possible to identify massive accreted systems
within the Galaxy through their unique dynamical signatures. One such system, Gaia …

We combine spectroscopic, photometric, and astrometric information from APOGEE data
release 17 and Gaia early data release 3 to perform a self-consistent characterization of …

Relying on the dramatic increase in the number of stars with full 6D phase-space information
provided by the Gaia Data Release 3, we resolve the distribution of the stellar halo around …

Context. Debris from past merger events is expected and also known, to some extent, to
populate the stellar halo near the Sun. Aims. We aim to identify and characterise such …

Abstract The Milky Way (MW) stellar halo contains relics of ancient mergers that tell the story
of our galaxy's formation. Some of them are identified due to their similarity in energy …

The astrophysical origins of r-process elements remain elusive. Neutron star mergers
(NSMs) and special classes of core-collapse supernovae (rCCSNe) are leading candidates …

We present the results of a multicomponent kinematic model of a large sample of RR Lyrae
detected by Gaia. By imposing a fourfold symmetry and employing Gaia proper motions, we …