Magnetic field structure in the Flattened Envelope and Jet in the young
  protostellar system HH 211
  HH 211 is a young Class 0 protostellar system, with a flattened envelope, a
possible rotating disk, and a collimated jet. We have mapped it with the
Submillimeter Array in 341.6 GHz continuum and SiO J=8-7 at ~ 0.6 resolution.
The continuum traces the thermal dust emission in the flattened envelope and
the possible disk. Linear polarization is detected in the continuum in the
flattened envelope. The field lines implied from the polarization have
different orientations, but they are not incompatible with current
gravitational collapse models, which predict different orientation depending on
the region/distance. Also, we might have detected for the first time polarized
SiO line emission in the jet due to the Goldreich-Kylafis effect. Observations
at higher sensitivity are needed to determine the field morphology in the jet.
