360 citations · 2k across the 56 of their papers we have counts for
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The Milky Way has no in-situ halo other than the heated thick disc. Composition of the stellar halo and age-dating the last significant merger with Gaia DR2 and APOGEE
P. Di Matteo, M. Haywood, M. D. Lehnert +5
Previous studies based on the analysis of Gaia DR2 data have revealed that accreted stars, possibly originating from a single progenitor satellite, are a significant component of t…
Mergers, tidal interactions, and mass exchange in a population of disc globular clusters: II. Long-term evolution
Alessandra Mastrobuono-Battisti, Sergey Khoperskov, Paola Di Matteo +1
Globular clusters (GCs), the oldest stellar systems observed in the Milky Way, have for long been considered single stellar populations. As such, they provided an ideal laboratory…
The echo of the bar buckling: phase-space spirals in Gaia DR2
Sergey Khoperskov, Paola Di Matteo, Ortwin Gerhard +5
Using a single N-body simulation () we explore the formation, evolution and spatial variation of the phase-space spirals similar to those recently discovered by…
Mergers, tidal interactions, and mass exchange in a population of disc globular clusters
Sergey Khoperskov, Alessandra Mastrobuono-Battisti, Paola Di Matteo +1
We present the results of a self-consistent -body simulation following the evolution of a primordial population of thick disc globular clusters (GCs). We study how the internal…
In disguise or out of reach: first clues about in-situ and accreted stars in the stellar halo of the Milky Way from Gaia DR2
Misha Haywood, Paola Di Matteo, Matthew Lehnert +3
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 sequen…
Phylogeny of the Milky Way's inner disk and bulge populations: Implications for gas accretion, (the lack of) inside-out thick disk formation, and quenching
Misha Haywood, Paola Di Matteo, Matthew Lehnert +3
We show that the bulge and the disk of the Milky Way (MW) at R7~kpc are well described by a unique chemical evolution and a two-phase star-formation history (SFH). We arg…
The disc origin of the Milky Way bulge: Dissecting the chemo-morphological relations using N-body simulations and APOGEE
F. Fragkoudi, P. Di Matteo, M. Haywood +4
There is a long-standing debate on the origin of the metal-poor stellar populations of the Milky Way (MW) bulge, with the two leading scenarios being that these populations are eit…
Stellar metallicity variations across spiral arms in disk galaxies with multiple populations
S. Khoperskov, P. Di Matteo, M. Haywood +1
This letter studies the formation of azimuthal metallicity variations in the disks of spiral galaxies in the absence of initial radial metallicity gradients. Using high-resolution…