4 papers
Tidal shells as clocks of galaxy mergers and tests of cosmological models
Ivana Ebrová, Michal Bílek, Elisabeth Sola +2
Stellar shells-concentric arc-like tidal features formed in galaxy mergers-provide a valuable record of recent galaxy assembly histories encoding both the merger event and the grav…
Projection Effects in Merger Dating for Illustris TNG Shell Galaxies
Tuğba Erol, Mustafa Kürşad Yıldız, Ivana Ebrová +1
Stellar shells are low-surface-brightness structures that typically appear as concentric arcs. They are observed in many giant elliptical and lenticular galaxies, as well as in som…
Deep imaging with Milanković telescope: Linking merger history to kinematics of elliptical galaxies
Ivana Ebrová, Michal Bílek, Ana Lalović +4
Kinematical and morphological features observed in early-type galaxies provide valuable insights into the evolution of their hosts. We studied the origin of prolate rotation (i.e.,…
Origin of the spectacular tidal shells of galaxy NGC474
Michal Bílek, Jérémy Fensch, Ivana Ebrová +4
The lenticular galaxy NGC474 hosts a rich system of tidal shells and streams, some of which are exceptionally bright. Two teams recently presented spectroscopic observations of the…