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astro-ph.GA2026
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…
astro-ph.GA2026
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…