The Pawsey Supercomputing Centre


Galactic star formation regulated by interstellar dust

Interstellar dust is a fundamentally important component of interstellar medium (ISM) in galaxies. The main reason for this is that it can control interstellar chemistry of variously different elements on dust grains and thereby drive the formation of molecular hydrogen from which new stars can form in galaxies.

In this project, we try to elucidate the fundamental roles of dust in galaxy-scale star formation by using our original simulation codes that can be run on the GPU cluster Fornax. We run ~ 50 models with different model parameters of dust and thereby investigate the dependence of star formation histories on the dust parameters, such as the dust accretion time scale and the dust composition of ISM. The new model includes the dust formation from gas and metals ejected from supernovae (SNe) and Asymptotic giant branch (AGB) stars and the dust growth  through accretion of metals onto pre-existing grains.

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