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Why the Northern Hemisphere Needs a 30-40 m Telescope and the Science at Stake: Galactic Archaeology from the Northern Sky
Borja Anguiano, David Valls-Gabaud, Guillaume F. Thomas +7
By the 2040s--50s, facilities such as \emph{Gaia}, WEAVE, 4MOST, Rubin, \emph{Euclid}, \emph{Roman}, and the ESO ELT will have transformed our global view of the Milky Way. Yet key…
Delayed phase mixing in the self-gravitating Galactic disc
T. Asano, T. Antoja
The Gaia phase spiral is considered to work as a dynamical clock for dating past perturbations, but some of the previous studies neglected the disc's self-gravity, potentially bias…
Analogues of the Milky Way-Sagittarius interaction in the TNG50: effect on the Milky Way
Marcin Semczuk, Teresa Antoja, Alexandra Girón-Soto +1
The Sagittarius Dwarf Galaxy is undoubtedly being disrupted in the tidal field of the Milky Way. The Milky Way disc is also found to be in a state of disequilibrium. The role of th…
Spiral arms across stellar populations in simulations via the local dimension method
J. Ardèvol, M. Semczuk, T. Antoja +3
Context. The origin and nature of spiral arms remain unclear. Star forming regions and young stars are generally strongly associated to the spiral structure, but there are few quan…
Formation of the Two-Armed Phase Spiral from Multiple External Perturbations
Junxian Lin, Zhao-Yu Li, Rui Guo +3
Recent studies using the Gaia DR3 data have revealed a two-armed phase spiral in the phase space in the inner disk. In this study, we present new features of the two-armed…
Searching for new Hypervelocity Stars with Gaia DR3 and VLT/FORS2 Spectroscopy
Julio A. Carballo-Bello, Pau Ramos, Jesús M. Corral-Santana +5
Hypervelocity stars are unique objects moving through the Milky Way at speeds exceeding the local escape velocity, providing valuable insights into the Galactic gravitational poten…