Other
Scientific paper
Jan 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...403l..21c&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 403, no. 1, p. L21-L24.
Other
28
Molecular Flow, Reflection Nebulae, Silicon Oxides, Sulfur Oxides, Astronomical Maps, Bow Waves, Shock Waves, Stellar Models
Scientific paper
We have detected SO JK = 6(5)-5(4) and SiO J = 5-4 emission from the lobes of the NGC 2071 outflow. In the middle of the northern lobe there is a broad high-velocity feature with velocities of up to 30 km/s relative to that of the ambient cloud. The spatial and velocity distributions of SO and SiO are unlike those of any other molecule in the outflow and we suggest that this is due to a velocity-selective enhancement caused by shocks. Thus, the SO and SiO emission from the NGC 2071 outflow can be a useful diagnostic of the acceleration mechanism, and in particular can be used to discriminate between models in which ambient gas is accelerated gently by a slow shock or abruptly by a high-velocity bow shock.
Chernin Lawrence
Masson Colin
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