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Shock excited emission knots in cometary reflection nebula

Published online by Cambridge University Press:  04 August 2017

Th. Neckel  and
H. J. Staude
Th. Neckel
Affiliation:
Max-Planck-Institut für Astronomie, Königstuhl 17, D-6900 Heidelberg FRG
H. J. Staude
Affiliation:
Max-Planck-Institut für Astronomie, Königstuhl 17, D-6900 Heidelberg FRG

Abstract

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Near infrared and Ha CCD images of the newly found cometary reflection nebula GN 20.18.3. led to the discovery of its illuminating star and of a bright Ha knot located on its axis of symmetry. The knot has a Herbig-Haro spectrum indicating the presence of a collimated outflow from the central star. Also in the Bok globule L 810 a red CCD image reveals a cometary reflection nebula surrounding the central star, from which a shock excited filament is emanating. These observations emphasize the common origin of cometary nebulae and collimated high velocity flows.

Type
Herbig-Haro Objects
Information
Symposium - International Astronomical Union , Volume 122: Circumstellar Matter , 1987 , pp. 183 - 184
Copyright
Copyright © Reidel 1987 

References

Neckel, Th. Chini, R., Glisten, R. and Wink, J.E.: 1985, Astron. Astrophys. 153, 253 Google Scholar
Staude, H.J., Neckel, Th., Sarcander, M., Birkle, K.: This volumeGoogle Scholar