Browsing Faculty of Arts and Sciences by Author "D'Onghia, Elena"

Now showing items 1-3 of 3

    • Quasi-resonant Theory of Tidal Interactions 

      D'Onghia, Elena; Vogelsberger, Mark; Faucher-Giguere, Claude-Andre; Hernquist, Lars (American Astronomical Society, 2010)
      When a spinning system experiences a transient gravitational encounter with an external perturber, a quasi-resonance occurs if the spin frequency of the victim roughly matches the peak angular speed of the perturber. Such ...

    • Resonant stripping as the origin of dwarf spheroidal galaxies 

      D'Onghia, Elena; Besla, Gurtina; Cox, Thomas J.; Hernquist, Lars (Nature Research (part of Springer Nature), 2009)
      Dwarf spheroidal galaxies are the most dark-matter-dominated systems in the nearby Universe(1-3) and their origin is one of the outstanding puzzles of how galaxies form. Dwarf spheroidals are poor in gas and stars, making ...

    • Substructure Depletion in the Milky Way Halo by the Disk 

      D'Onghia, Elena; Springel, Volker; Hernquist, Lars; Keres, Dusan (American Astronomical Society, 2010)
      We employ numerical simulations and simple analytical estimates to argue that dark matter substructures orbiting in the inner regions of the Galaxy can be efficiently destroyed by disk shocking, a dynamical process known ...