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 …

The Gaia mission has provided an invaluable wealth of astrometric data for more than a
billion stars in our Galaxy. The synergy between Gaia astrometry, photometry, and …

We present a new scheme for the classification of the in-situ and accreted globular clusters
(GCs). The scheme uses total energy E and z-component of the orbital angular momentum …

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 …

ABSTRACT The Gaia-Sausage/Enceladus (GS/E) structure is an accretion remnant that
comprises a large fraction of the Milky Way's stellar halo. We study GS/E using high-purity …

We present a new suite of cosmological zoom-in hydrodynamical (spatial resolution)
simulations of Milky-Way mass galaxies to study how a varying mass ratio for a Gaia …

Abstract In the Λ-Cold Dark Matter model of the universe, galaxies form in part through
accreting satellite systems. Previous works have built an understanding of the signatures of …

We investigate the properties of mergers comparable to the Gaia–Sausage–Enceladus
(GSE) using cosmological hydrodynamical simulations of Milky Way-like galaxies. The …

The majority of the Milky Way's stellar halo consists of debris from our galaxy's last major
merger, the Gaia-Sausage-Enceladus (GSE). In the past few years, stars from the GSE have …

Context. Studies of the element abundances and kinematics of stars belonging to the
Galactic halo have revealed the existence of two distinct populations: accreted stars with a …