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| Paper: |
GEAR: A Window on the World of Dwarf Galaxies |
| Volume: |
453, Advances in Computational Astrophysics: Methods, Tools, and Outcome |
| Page: |
141 |
| Authors: |
Revaz, Y.; Jablonka, P. |
| Abstract: |
GEAR is a new fully parallel chemodynamical Tree/SPH code designed to
study the formation and evolution of galaxies. GEAR treats the complex
physics of baryons, such as radiative cooling and feedback, star
formation, and chemical evolution. It has been fully characterized by
performing hundreds of simulations, including convergence tests with
the spatial resolution varying from 100 pc down to 12 pc. We
demonstrate here the performance of GEAR in the context of the
evolution of the dwarf spheroidal galaxies. Our models, combined with
the stellar chemical abundances derived from high resolution
spectroscopy in a sample of dSphs (The ESO Large Programme DART),
bring crucial clues on otherwise poorly constrained physical
parameters, such as the supernova feedback, star formation efficiency
or galaxy mass profiles. Moreover, these new simulations allow to
predict the number of stars formed in a given dark matter halo mass,
providing a crucial test for cosmology. |
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