Program: GN-2012B-Q-32

Magnetohydrodamic jet winds are expected to extract angular momentum from forming stars, and so control the rate at which matter accretes through the circumstellar disk. We will study the structure of the DG Tau micro-jets during its current mass accretion/ejection event to determine how the jet properties evolve as material passes down the jet channel. This is our second opportunity to monitor a mass ejection from this object. Comparison with our NIFS data for the 2003 ejection will reveal the extent to which the outflow velocities, densities, entrainment properties, and general jet development during the current event mimic those following 2003, or whether different circumstellar conditions lead to discernibly different jet structures.