A dynamically young and perturbed Milky Way disk

  title={A dynamically young and perturbed Milky Way disk},
  author={T. Antoja and Amina Helmi and M. Romero-G{\'o}mez and David Katz and C. Babusiaux and Ronald Drimmel and D. W. Evans and Francesca Figueras and Eloisa Poggio and C{\'e}line Reyl{\'e} and Annie C. Robin and George Seabroke and C. Soubiran},
The evolution of the Milky Way disk, which contains most of the stars in the Galaxy, is affected by several phenomena. For example, the bar and the spiral arms of the Milky Way induce radial migration of stars1 and can trap or scatter stars close to orbital resonances2. External perturbations from satellite galaxies can also have a role, causing dynamical heating of the Galaxy3, ring-like structures in the disk4 and correlations between different components of the stellar velocity5. These… 

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