Conveners
Galaxies 4
- Daniela Galárraga-Espinosa (Kavli-IPMU)
Unveiling the 3D shape of the Milky Way’s dark matter halo is critical to understanding its formation history and provides a fundamental test of the ΛCDM cosmological model. Functioning as an intermediary between the Galaxy and its satellites, the shape of dark matter halo also plays a key role in deciphering the long-standing problem of a ‘plane of satellites’ vertically aligned to the...
Barred galaxies are an important branch of the Hubble sequence. In the past decades, significant efforts have been made to understanding the formation and evolution of barred galaxies. We develop a population-orbit superposition method, which can fully utilize stellar kinematics and stellar populations obtained from MUSE-like IFS data, to construct 3D models of edge-on barred galaxies. This...
Using K giants selected from DESI Year-3 Milky Way (MW) Survey, we measure the shape, orientation, radial density profile, and spatial anisotropies in the density profile of the MW stellar halo at 8~kpc$
Stellar bars are non-axisymmetric structures located in the inner regions of galaxies; they
play a crucial role in the dynamical evolution of their host galaxies. They are observed in approximately 30\% of disc galaxies in the local Universe. In this study, we analyze the impact of different environments on bar formation and evolution using the TNG100 and TNG50 simulations from the...
Accurate constraint on the total mass of the Milky Way (MW) is crucial yet remains significantly uncertain after decades of efforts.
In this study, we employ a novel data-driven dynamical modeling method, the empirical distribution function (\empdf), to refine estimates of the Milky Way mass profile using a large sample of halo stars from the Dark Energy Spectroscopic Instrument Milky Way...
