Program: GN-2019B-Q-204

T Tauri is the eponymous member of it’s class of young sun-like stars, and observations over the course of the past 30 years have revealed that it is a remarkable young triple star system. T Tau has become a veritable laboratory for modeling dynamical evolution in young multiple systems. Our team (PI = Schaefer) has been monitoring the orbit of the inner T Tau S binary, and we predict periastron closest approach will occur in ~2023. H-alpha imaging of the southern outflows from T Tau reveals periodic mass ejections. Correlation of this imaging and the outflow kinematics with the historical orbit timing suggests a fascinating prospect: launch of the southern outflow ejections may be nearly contemporaneous with the T Tau Sa+Sb binary periastron passage. We propose for a new epoch of optical imaging and integral field spectroscopic measurements using Gemini+GMOS to reveal the 3-dimensional outflow kinematics from T Tau S. Our primary goals are to firm up the temporal coincidence of past outflow ejections in relation to the timing of the periastron passages of T Tau Sb, and provide an important snapshot of the inner system before the next closest approach. The T Tau S system may provide a unique and important opportunity to spatially resolve system disk+outflow characteristics and binary orbital motion as the next periastron passage triggers a new outflow ejection event.