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NUMERICAL SIMULATIONS OF HH 211: A REFLECTION-SYMMETRIC BIPOLAR OUTFLOW
MORAGHAN, ANTHONY,LEE, CHIN-FEI,HUANG, PO-SHENG,VAIDYA, BHARGAV The Korean Astronomical Society 2015 天文學論叢 Vol.30 No.2
Recent high-resolution, high-sensitivity observations of protostellar jets have shown many to possess an underlying 'wiggle' structure. HH 211 is one such example where recent sub-mm observations revealed a clear reflection-symmetric wiggle. An explanation for this is that the HH211 jet source is moving as part of a protobinary system. Here we test this assumption by simulating HH211 through 3D hydrodynamic simulations using the pluto code with a molecular chemistry and cooling module, and initial conditions based on an analytical model derived from SMA observations. Molecular chemistry allows us to accurately plot synthetic molecular emission maps and position-velocity diagrams for direct comparison to observations, enabling us to test the observational assumptions and put constraints on the physical parameters of HH211. Our preliminary results show that the reflection-symmetric wiggle can be recreated through the assumption of a jet source being part of a binary system.