Atomic hydrogen associated with the high-velocity flow in NGC 2071
Journal Article
·
· Astrophys. J., Lett. Ed.; (United States)
We report the first detection of 21 cm atomic hydrogen emission from a star-forming region exhibiting energetic molecular outflow. Observing with the VLA, we find a ..delta..v = 120 km s/sup -1/ wide H I line formed within a 0.1 pc radius of a cluster of moderate luminosity infrared stars associated with the bipolar outflow in NGC 2071. The column density of high-velocity atomic hydrogen is 8 x 10/sup 20/ cm/sup -2/, a total of 0.1 M/sub sun/ of H I. The high-velocity atomic gas may either be formed by the dissociation of H/sub 2/ behind the shock that is responsible for the broad 2.12 ..mu..m H/sub 2/ emission line in this source or the result of H/sub 2/ having been photodissociated by the UV radiation field of the embedded, recently formed stars.
- Research Organization:
- Bell Laboratories, Holmdel, New Jersey
- OSTI ID:
- 6051735
- Journal Information:
- Astrophys. J., Lett. Ed.; (United States), Journal Name: Astrophys. J., Lett. Ed.; (United States) Vol. 266:1; ISSN AJLEA
- Country of Publication:
- United States
- Language:
- English
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