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Forming disc galaxies in major mergers

Lia Athanassoula

Évènements associés

  • Le lundi 9 mars 2015 de 11:00 à 12:00 - lieu : Salle 108, Bâtiment des Communs - Meudon

I follow the formation of galactic discs during major mergers, using high resolution N-body + SPH simulations. I witness the inside-out formation of the disc, and of type II breaks in the radial projected density profiles. The bulge to total baryonic mass ratio varies from one run to another, with a minimum of 0.05 . The resulting rotation curves are flat. In all my simulations I find that the disc has substructures, such as bars, lenses, spirals and rings. I will briefly discuss the dynamics of these substructures, as well as radial migration of the stars