84 citations · 259 across the 14 of their papers we have counts for
14 papers
The FRAM robotic telescope for atmospheric monitoring at the Pierre Auger Observatory
The Pierre Auger Collaboration, A. Aab, P. Abreu +377
FRAM (F/Photometric Robotic Atmospheric Monitor) is a robotic telescope operated at the Pierre Auger Observatory in Argentina for the purposes of atmospheric monitoring using stell…
The major merger origin of the Andromeda II kinematics
Ivana Ebrová, Ewa L. Łokas, Sylvain Fouquet +1
Prolate rotation (i.e. rotation around the long axis) has been reported for two Local Group dwarf galaxies: Andromeda II, a dwarf spheroidal satellite of M31, and Phoenix, a transi…
Galaxies with prolate rotation in Illustris
Ivana Ebrova, Ewa L. Lokas
Tens of early type galaxies have been recently reported to possess prolate rotation, i.e. significant amount of rotation around the major axis, including two cases in the Local Gro…
Formation of Andromeda II via a gas-rich major merger and an interaction with M31
Sylvain Fouquet, Ewa L. Lokas, Andres del Pino +1
Andromeda II (And II) has been known for a few decades but only recently observations have unveiled new properties of this dwarf spheroidal galaxy. The presence of two stellar popu…
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…
The origin of prolate rotation in dwarf spheroidal galaxies formed by mergers of disky dwarfs
Ivana Ebrova, Ewa L. Lokas
Motivated by the discovery of prolate rotation of stars in Andromeda II, a dwarf spheroidal companion of M31, we study its origin via mergers of disky dwarf galaxies. We simulate m…
Andromeda II as a merger remnant
Ewa L. Lokas, Ivana Ebrova, Andres del Pino +1
Using N-body simulations we study the origin of prolate rotation recently detected in the kinematic data for And II, a dSph satellite of M31. We propose an evolutionary model for t…
Shell galaxies: kinematical signature of shells, satellite galaxy disruption and dynamical friction
Ivana Ebrova
Stellar shells observed in many giant elliptical and lenticular as well as a few spiral and dwarf galaxies presumably result from radial minor mergers of galaxies. We show that the…
Testing MOND gravity in the shell galaxy NGC 3923
Michal Bilek, Bruno Jungwiert, Lucie Jilkova +3
Context. The elliptical galaxy NGC 3923 is surrounded by numerous stellar shells that are concentric arcs centered on the galactic core. They are very likely a result of a minor me…
Quadruple-peaked spectral line profiles as a tool to constrain gravitational potential of shell galaxies
Ivana Ebrova, Lucie Jilkova, Bruno Jungwiert +5
Stellar shells observed in many giant elliptical and lenticular as well as a few spiral and dwarf galaxies, presumably result from galaxy mergers. Line-of-sight velocity distributi…
Comparing Various Approaches to Simulating the Formation of Shell Galaxies
Ivana Ebrova, Katerina Bartoskova, Bruno Jungwiert +2
The model of a radial minor merger proposed by Quinn (1984), which successfully reproduces the observed regular shell systems in shell galaxies, is ideal for a test-particle simula…
Quadruple-peaked Line-of-sight Velocity Distributions in Shell Galaxies
Ivana Ebrova, Lucie Jilkova, Bruno Jungwiert +4
We present an improved study of the expected shape of the line-of-sight velocity distribution in shell galaxies. We found a simple analytical expression connecting prominent and in…
Shell Galaxies, Dynamical Friction, and Dwarf Disruption
Ivana Ebrova, Bruno Jungwiert, Gabriela Canalizo +2
Using N-body simulations of shell galaxies created in nearly radial minor mergers, we investigate the error of collision dating, resulting from the neglect of dynamical friction an…
Shell Galaxies: Dynamical Friction, Gradual Satellite Decay and Merger Dating
Ivana Ebrova, Bruno Jungwiert, Gabriela Canalizo +2
With the goal to refine modelling of shell galaxies and the use of shells to probe the merger history, we develop a new method for implementing dynamical friction in test-particle…