Observations of shocked [FeII] and H2 line profiles in orion bullet wakes |
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| Authors: | Jonathan A. Tedds Peter W. J. L. Brand Michael G. Burton Antonio Chrysostomou Amadeu J. L. Fernandes |
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| Affiliation: | (1) Institute for Astronomy, University of Edinburgh, EH9 3HJ, U.K.;(2) School of Physics, University of New South Wales, Australia;(3) Division of Physical Sciences, University of Hertfordshire, U.K.;(4) Centro de Astrofisica, Universidade do Porto, Portugal |
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| Abstract: | Recent near-IR imaging of the Orion molecular cloud has revealed a complex of dense bullets, visible as [FeII] emitting HH-objects at the tips of H2 wakes, ejected explosively from the cloud core. Having resolved individual bow-shock structures for the first time in this bright source, we have observed [FeII] 1.644µm velocity profiles of selected bullets and H2 1-0 S(1), 2.122µm velocity profiles for a series of positions along and across the corresponding bow-shock wakes. We present observed profiles for the bullet M42 HH1 and its associated wake and compare with theoretical bow-shock models. |
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