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Title:
High Velocity Outflows in the Orion Nebula Determined from Proper Motions
Authors:
O'dell, C. R.
Affiliation:
AA(Department of Physics and Astronomy, Vanderbilt University, Nashville, TN, USA.)
Publication:
The Eight Texas-Mexico Conference on Astrophysics (Eds. M. Reyes-Ruiz & E. Vázquez-Semadeni) Revista Mexicana de Astronomía y Astrofísica (Serie de Conferencias) Vol. 18, pp. 80-83 (2003) (http://www.astroscu.unam.mx/~rmaa/) (RMxAC Homepage)
Publication Date:
09/2003
Origin:
RMXAC
Keywords:
H II regions, ISM: Jets and outflows, Stars: Pre-main sequence, Stars: Mass loss
Bibliographic Code:
2003RMxAC..18...80O

Abstract

Hubble Space Telescope images are of sufficiently high resolution that when recent images are combined with those going back to December, 1993, one can measure proper motions down to about 10 km s-1. Such observations show a wealth of detail and reveal multiple high velocity outflow systems. Proper motions are especially good for determining the origin of outflows. They reveal an outflow (HH 625) originating from the high velocity bipolar molecular source in Orion-S. Perhaps most remarkable is the evidence that most of the optical outflow in Orion appears to originate from a source located at 5:35:14.56 -5:23:54 (2000) which possesses no bright counterpart at any observed wavelength.
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