97 citations · 359 across the 11 of their papers we have counts for
11 papers
Unravelling stellar populations in the Andromeda Galaxy
Grzegorz Gajda, Ortwin Gerhard, Matías Blaña +4
To understand the history and formation mechanisms of galaxies it is crucial to determine their current multidimensional structure. Here we focus on stellar population properties,…
Tidally induced bars in gas-rich dwarf galaxies orbiting the Milky Way
Grzegorz Gajda, Ewa L. Łokas, E. Athanassoula
Bars in galaxies may form not only through instability, but also as a result of an interaction with another galaxy. In particular, they may appear in disky dwarf galaxies interacti…
Tidally induced bars in dwarf galaxies on different orbits around a Milky Way-like host
Grzegorz Gajda, Ewa L. Lokas, E. Athanassoula
Bars in galaxies may develop through a global instability or due to an interaction with another system. We study bar formation in disky dwarf galaxies orbiting a Milky Way-like gal…
The orbital structure of a tidally induced bar
Grzegorz Gajda, Ewa L. Lokas, E. Athanassoula
Orbits are the key building blocks of any density distribution and their study helps us understand the kinematical structure and the evolution of galaxies. Here we investigate orbi…
Tidally induced bars of galaxies in clusters
Ewa L. Lokas, Ivana Ebrova, Andres del Pino +5
Using N-body simulations we study the formation and evolution of tidally induced bars in disky galaxies in clusters. Our progenitor is a massive, late-type galaxy similar to the Mi…
Spectral analysis of stellar orbits in a tidally induced bar
Grzegorz Gajda, Ewa L. Lokas, E. Athanassoula
Using numerical analysis of fundamental frequencies we study the orbital structure of a tidally induced bar formed in a simulated dwarf galaxy orbiting a Milky Way-like host. We fi…
On the tidal radius of satellites on prograde and retrograde orbits
Grzegorz Gajda, Ewa L. Lokas
A tidal radius is a distance from a satellite orbiting in a host potential beyond which its material is stripped by the tidal force. We derive a revised expression for the tidal ra…
The resonant nature of tidal stirring of disky dwarf galaxies orbiting the Milky Way
Ewa L. Lokas, Marcin Semczuk, Grzegorz Gajda +1
Using N-body simulations we study the tidal evolution of initially disky dwarf galaxies orbiting a Milky Way-like host, a process known to lead to the formation of dwarf spheroidal…
Radial orbit instability in dwarf dark matter haloes
Grzegorz Gajda, Ewa L. Lokas, Radoslaw Wojtak
Using N-body simulations we study the phenomenon of radial orbit instability occurring in dark matter haloes of the size of a dwarf galaxy. We carried out simulations of seven sphe…
Adventures of a tidally induced bar
E. L. Lokas, E. Athanassoula, V. P. Debattista +5
Using N-body simulations, we study the properties of a bar induced in a dwarf galaxy as a result of tidal interaction with the Milky Way. The dwarf is initially composed of a disk…
Tidal tails of dwarf galaxies on different orbits around the Milky Way
Ewa L. Lokas, Grzegorz Gajda, Stelios Kazantzidis
We present a phenomenological description of the properties of tidal tails forming around dwarf galaxies orbiting the Milky Way. For this purpose we use collisionless N-body simula…