Shell Galaxies, Dynamical Friction, and Dwarf Disruption
Ivana Ebrova, Bruno Jungwiert, Gabriela Canalizo, Nicola Bennert,, Lucie Jilkova
TL;DR
This paper uses N-body simulations to study how neglecting dynamical friction and dwarf disruption affects the accuracy of dating shell galaxy collisions.
Contribution
It introduces a detailed analysis of collision dating errors caused by common simplifications in shell galaxy simulations.
Findings
Neglecting dynamical friction leads to significant dating errors.
Gradual dwarf disruption impacts shell formation and timing.
Simulations show improved accuracy when including these effects.
Abstract
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 and of gradual disruption of the cannibalized dwarf.
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Taxonomy
TopicsAstronomy and Astrophysical Research · Astronomical Observations and Instrumentation · Pulsars and Gravitational Waves Research