Logo image
On the Origin of the Intergalactic Stellar Population
Thesis

On the Origin of the Intergalactic Stellar Population

Yu-Ting Wu
Masters, 國立清華大學, 物理系
2006

Abstract

星系吞併 多體模擬 galaxy merger N-body simulation
Intracluster stars have been observed and studied in the past fifty years but the origin of these stars is still not clear. Stanghellini et al. (2006) suggested that the scenario of elliptical galaxy merging is a possible origin of intergalactic stellar population. They conclude that there are 5.5% ∼ 21% intergalactic stars are produced depending on the initial mass ratio and the initial relative velocities of the elliptical galaxies. We use N-body simulations of the mergers of disc galaxies to investigate its importance on the production of intracluster stellar population. In our simulations, the galaxies have head-on collisions with different relative orientations and different relative velocities. Although the final density profile of stellar components are very different for different models, the fractions of escaping stars are all around 2% ∼ 5%.

Metrics

1 Record Views

Details

Logo image