SPIN EQUILIBRIUM AND OUTFLOWS IN YOUNG STELLAR OBJECTS

We present N-body simulations of accretion discs about young stellar o bjects (YSOs). The simulation includes the presence of a magnetic loop structure on the central star which interacts with the particles by m eans of a magnetic drag force. We find that an equilibrium spin rate i s achieved when the corotation radius coincides with the edge of the l oop. This spin rate is consistent with observed values for T Tauri sta rs, being an order of magnitude less than the breakup value. The mater ial ejected from the system by the rotating loop has properties consis tent with the observed molecular outflows, given the presence of a sui table containing cavity.