Claire J. Chandler and John S. Richer 2001 ApJ 555 139 doi:10.1086/321463
Subarcsecond Imaging of SiO in the HH 211 Protostellar Jet
FREEClaire J. Chandler1 and John S. Richer2
Show affiliationsWe present images of the HH 211 molecular jet in the SiO v = 0, J = 1-0 line at 43 GHz made with the Very Large Array at approximately 0
5 resolution. The SiO emission appears to trace primarily internal bow shocks in the outflow, suggesting that the dust and molecular gas are accelerated via prompt entrainment at internal working surfaces in the jet. There is also some evidence for limb brightening of the SiO emission, indicating that SiO emission may also arise from entrainment in the jet's boundary layer. Excitation temperatures of 
150-200 K are inferred from the SiO emission. Enhancements in the SiO abundance of ~106 over interstellar values are observed, and the possible origin of the SiO is discussed.
- Subject headings
ISM: jets and outflows; ISM: molecules; radio lines: ISM; stars: formation
- Dates
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Issue 1 (2001 July 1)
Received 2000 August 16, accepted for publication 2001 March 7
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Subarcsecond Imaging of SiO in the HH 211 Protostellar Jet
Claire J. Chandler and John S. Richer 2001 ApJ 555 139
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