Jul 26 – 30, 2010
Montpellier 2 University
Europe/Paris timezone

The Inter-Galactic Populations and Unbound Dark Matter

Jul 29, 2010, 3:20 PM
20m
Amphithéatre Dumontet (Montpellier 2 University)

Amphithéatre Dumontet

Montpellier 2 University

Place Eugene Bataillon, 34095 Montpellier Cedex 5 FRANCE

Speaker

Prof. Ing-Guey Jiang (National Tsing-Hua University)

Description

The diffused light between galaxies, as first discovered by Zwicky (1951), has been an interesting issue related with the evolution of galaxies. N-body simulations of mergers of galaxies with dark matter have been employed to address this topic. By N-body simulations, we investigate the production of intergalactic populations through head-on mergers. Our results show that single head-on mergers cannot explain the observations, and the main conclusions are: (1)head-on merging events make a considerable fraction of dark metter become unbound; (2)some luminous intergalactic populations are in fact trapped in dark halo and gravitationally bounded; (3)multiple and minor mergers shall have contributions on intergalactic populations.

Primary author

Prof. Ing-Guey Jiang (National Tsing-Hua University)

Co-author

Ms Yu-Ting Wu (National Tsing-Hua University)

Presentation materials