The Possibly Remnant Massive Outflow in G5.89‐0.39. I. Observations and Initial Magnetohydrodynamic Simulations

We have obtained maps of the large scale outflow associated with the UCHIIregionG5.89-0.39 in CO and 13CO (J=3-2), SiO (J=8-7,J=5-4), SO2(13(2,12)-13(1,13)) and H13CO+(J=4-3). From these maps we have been able todetermine the mass (3.3 M_sun), momentum (96 M_sun km/s), energy (3.5x10^{46}erg), mechanical luminosity (141 L_sun), and mass loss rate(~1x10^{-3}M_sun/yr) in the large scale outflow. The observationally derivedparameters were used toguide 3D magnetohydrodynamic models of the jet entrainedoutflow. Through the combination of observations and simulations, we suggestthat the large scale outflowmay be inclined by approximately 45 deg to the lineof sight, and that the jet entraining the observed molecular outflow may havebeen active for as little as 1000 years, half the kinematic age of the outflow.