Binary outflows from young stars: interaction of co-orbital jet and wind
  Jets from young stellar objects provide insight into the workings of the
beating heart at the centre of star forming cores. In some cases, multiple
pulsed outflows are detected such as the atomic and molecular jets from a
proposed binary system in the T\,Tauri star HH30. We investigate here the
development and propagation of duelling atomic and molecular outflows stemming
from the two stars in co-orbit. We perform a series of numerical experiments
with the {\small ZEUS-MP} code with enhanced cooling and chemistry modules. The
aim of this work is to identify signatures on scales of order 100 AU. The jet
sources are off the grid domain and so it is the propagation and interaction
from ~ 20AU out to 100\,AU simulated here. We find that the molecular flow from
the orbiting source significantly disturbs the atomic jet, deflecting and
twisting the jet and disrupting the jet knots. Regions of high ionisation are
generated as the atomic jet rams through the dense molecular outflow. Synthetic
images in atomic and molecular lines are presented which demonstrate
identifying signatures. In particular, the structure within the atomic jet is
lost and H-alpha may trace the walls of the present CO cavity or where the
walls have been recently. These results provide a framework for the
interpretation of upcoming high resolution observations.
