Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006sf2a.conf..269d&link_type=abstract
SF2A-2006: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics Eds.: D. Barret, F. Casoli, G.
Astronomy and Astrophysics
Astrophysics
Scientific paper
The hierarchical model of galaxy formation, despite its many successes, still suffers from the so--called ``angular momentum'' and ``overcooling'' problems. Supernovae--driven winds and their associated feedback on galaxy formation was proposed as a possible solution. It turned out that a proper modelling of supernovae explosions within a turbulent InterStellar Medium (ISM) is a difficult task. Recent advances have been obtained using a multiphase approach to solve for the thermal state of the ISM, plus some additional recipes to account for the kinetic effect of supernovae on the galactic gas. We describe here our implementation of supernovae feedback within the RAMSES code, and apply it to the formation and evolution of isolated galaxies of various masses and angular momenta. We have explored under what conditions a galactic wind can develop, if one considers only a quiescent mode of star formation. It turns out that, because of the ram pressure of infalling material from the gaseous halo, only moderately efficient winds appear, and in rather low mass (<1011 M_&sun;) dark matter haloes.
Dubois Yohan
Teyssier Romain
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