Statistics – Computation
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aps..apr.g8009k&link_type=abstract
American Physical Society, 2009 APS April Meeting, May 2-5, 2009, abstract #G8.009
Statistics
Computation
Scientific paper
In hierarchical structure formation, galaxy mergers are frequent and known to affect galaxy properties dramatically. Because of the non-linear coupling between pc and Mpc scales, high-resolution simulations are indispensable to comprehend galactic interactions. To this end, we present the first adaptive mesh refinement (AMR) simulation of two merging, low mass, initially gas-rich galaxies (2.0 x10^10 M each), including star formation and feedback. With galaxies resolved by ˜2 x10^7 total computational elements, we achieved unprecedented resolution of the multiphase interstellar medium, finding that a widespread starburst occurs in the merging galaxies via shock-induced star formation. Using the high dynamic range of AMR we also follow the interplay between the galaxies and the embedding medium depicting how galactic outflows and a hot metal-rich halo form. These results demonstrate that AMR provides a powerful tool in understanding interacting galaxies.
Abel Tom
Kim Ji-hoon
Wise John
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