Shock-induced star cluster formation in colliding galaxies
Abstract
We studied the formation process of star clusters using high-resolution N-body/smoothed particle hydrodynamcs simulations of colliding galaxies. The total number of particles is 1.2x10^8 for our high resolution run. The gravitational softening is 5 pc and we allow gas to cool down to \sim 10 K. During the first encounter of the collision, a giant filament consists of cold and dense gas found between the progenitors by shock compression. A vigorous starburst took place in the filament, resulting in the formation of star clusters. The mass of these star clusters ranges from 10^{5-8} Msun. These star clusters formed hierarchically: at first small star clusters formed, and then they merged via gravity, resulting in larger star clusters.
Keywords
Cite
@article{arxiv.1101.3708,
title = {Shock-induced star cluster formation in colliding galaxies},
author = {Takayuki R. Saitoh and Hiroshi Daisaka and Eiichiro Kokubo and Junichiro Makino and Takashi Okamoto and Kohji Tomisaka and Keiichi Wada and Naoki Yoshida},
journal= {arXiv preprint arXiv:1101.3708},
year = {2015}
}
Comments
4 pages, 3 figures, Proceedings of IAU Symposium 270, Computational Star Formation