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Centro de Astrofísica da Universidade do Porto

Observations of Shocked [FEII] and H2 Line Profiles in Orion Bullet Wakes

J. Tedds, P. W. J. L. Brand, M. G. Burton, A. Chrysostomou, A. J. L. Fernandes

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.

Astrophysics and Space Science
Volume 224, Page 139
February 1995

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