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Tidal Stirring of Disky Dwarfs with Shallow Dark Matter Density Profiles: Enhanced Transformation into Dwarf Spheroidals
Stelios Kazantzidis, Ewa L. Lokas, Lucio Mayer
(Abridged) The origin of dSphs in the Local Group (LG) remains an enigma. The tidal stirring model posits that late-type, rotationally-supported dwarfs resembling present-day dwarf…
Can we measure the slopes of density profiles in dwarf spheroidal galaxies?
Klaudia Kowalczyk, Ewa L. Lokas, Stelios Kazantzidis +1
Using collisionless N-body simulations of dwarf galaxies orbiting the Milky Way (MW) we construct realistic models of dwarf spheroidal (dSph) galaxies of the Local Group. The dwarf…
The shapes of Milky Way satellites: looking for signatures of tidal stirring
Ewa L. Lokas, Steven R. Majewski, Stelios Kazantzidis +4
We study the shapes of Milky Way satellites in the context of the tidal stirring scenario for the formation of dwarf spheroidal galaxies. The standard procedures used to measure sh…
Formation of Dwarf Spheroidal Galaxies Via Mergers of Disky Dwarfs
Stelios Kazantzidis, Ewa L. Lokas, Lucio Mayer +2
We perform collisionless N-body simulations to investigate whether binary mergers between rotationally-supported dwarfs can lead to the formation of dwarf spheroidal galaxies (dSph…
Evolutionary tracks of tidally stirred disky dwarf galaxies
Ewa L. Lokas, Stelios Kazantzidis, Lucio Mayer
Using collisionless N-body simulations, we investigate the tidal evolution of late-type, rotationally supported dwarfs inside Milky Way-sized host galaxies. Our study focuses on a…
On the Efficiency of the Tidal Stirring Mechanism for the Origin of Dwarf Spheroidals: Dependence on the Orbital and Structural Parameters of the Progenitor Disky Dwarfs
Stelios Kazantzidis, Ewa L. Lokas, Simone Callegari +2
(Abridged) The tidal stirring model posits the formation of dSph galaxies via the tidal interactions between rotationally-supported dwarfs and MW-sized host galaxies. Using a set o…