Schedule Aug 15, 2007
Massive Star Formation and Outflows
Robi Banerjee (Univ. Heidelberg)

Based on three dimensional AMR simulations we show that the assembly of prestellar cores which will result in massive stars is a very rapid process. We find mass typical accretion rates which are high enough to squeeze the radiation field produced by the young massive star. Initial turbulence and funnelled accretion through filaments furthermore enhances accretion onto the central object. We also show that bipolar outflows will be launched already in a very early stage of the prestellar evolution if the inital molecular core is threaded with magnetic fields. These magnetically driven outflows produce cavities out of which radiation pressure can be released, thereby reducing the limitations on the final mass of massive stars formed by gravitational collapse.

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