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- W3100179943 abstract "We have used multiple mid-infrared observations at 4.5 μm obtained with the infrared array camera, of the compact young stellar bipolar outflow Cep E to measure the proper motion of its brightest condensations. The images span a period of yr and have been reprocessed to achieve a higher angular resolution than their normal beam . We found that for a distance of 730 pc, the tangential velocities of the north and south outflow lobes are and respectively, and moving away from the central source roughly along the major axis of the flow. A simple 3D hydrodynamical simulation of the H2 gas in a precessing outflow supports this idea. Observations and models confirm that the molecular hydrogen gas, traced by the pure rotational transitions, moves at highly supersonic velocities without being dissociated. This suggests either a very efficient mechanism to reform H2 molecules along these shocks or the presence of some other mechanism (e.g. strong magnetic field) that shields the H2 gas." @default.
- W3100179943 created "2020-11-23" @default.
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- W3100179943 date "2014-10-14" @default.
- W3100179943 modified "2023-10-16" @default.
- W3100179943 title "Proper motions of young stellar outflows in the mid-infrared with Spitzer II HH 377/Cep E" @default.
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- W3100179943 doi "https://doi.org/10.1088/1367-2630/16/10/105008" @default.
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