Shell Galaxies: Dynamical Friction, Gradual Satellite Decay and Merger Dating

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Authors

EBROVA Ivana JUNGWIERT Bruno CANALIZO Gabriela BENNERT Nicola JÍLKOVÁ Lucie

Year of publication 2010
Type Article in Proceedings
Conference GALAXY WARS: STELLAR POPULATIONS AND STAR FORMATION IN INTERACTING GALAXIES
MU Faculty or unit

Faculty of Science

Citation
Web http://aspbooks.org/custom/publications/paper/423-0236.html
Keywords shell galaxies
Description 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 simulations of radial minor mergers. The friction is combined with a gradual decay of the dwarf galaxy. The coupling of both effects can considerably redistribute positions and luminosities of shells; neglecting them can lead to significant errors in attempts to date the merger.
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