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 nature of dark matter is one of the most pressing questions in physics. Yet all our
present knowledge of the dark sector to date comes from its gravitational interactions with …

The formation of our Milky Way can be split up qualitatively into different phases that resulted
in its structurally different stellar populations: the halo and the disk components,–. Revealing …

We use accurate estimates of aluminium abundance from the APOGEE Data Release 17
and Gaia Early Data Release 3 astrometry to select a highly pure sample of stars with …

The assembly of our Galaxy can be reconstructed using the motions and chemistry of
individual stars1, 2. Chemo-dynamical studies of the stellar halo near the Sun have …

In the ΛCDM paradigm, the Galactic stellar halo is predicted to harbor the accreted debris of
smaller systems. To identify these systems, the H3 Spectroscopic Survey, combined with …

The field of dark matter detection is a highly visible and highly competitive one. In this paper,
we propose recommendations for presenting dark matter direct detection results particularly …

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 …

We investigate the nature of the double color–magnitude sequence observed in the Gaia
DR2 HR diagram of stars with high transverse velocities. The stars in the reddest-color …

Recent work indicates that the nearby Galactic halo is dominated by the debris from a major
accretion event. We confirm that result from an analysis of APOGEE-DR14 element …