Abstract
The profiles of the V=1-0 S(1) line of H2 in the Orion molecular cloud show a variation from the center of the emission region where the profiles are broad and have extended blue wings, to the periphery where the profiles are narrow and have a peak at the velocity of the molecular cloud. These observations can be understood by a model of a radially expanding supersonic flow of gas colliding with the surrounding molecular cloud. It is concluded that the high velocity emission originates in the flow and the low velocity emission originates in the molecular cloud. Density variations in the flow and the surrounding cloud are necessary to explain the detailed line profiles and morphology.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Bastien, P., Bieging, J., Henkel, C., Martin, R. N., Pauls, T., Walmsley, D. M., Wilson, T. L. and Ziurys, L. M.: 1982, this volume, pp. 335–336.
Beck, S. C.: 1981, in preparation.
Beckwith, S., Persson, S. E., Neugebauer, G. and Becklin, E. E.: 1978, Astrophys. J. 223, pp. 464–470.
Chevalier, R. A.: 1980, Astrophys Lett. 21, pp. 57–62.
Downes, D., Genzel, R., Becklin, E. E. and Wynn-Williams, C. G.: 1981, Astrophys. J. 244, pp. 869–883.
Draine, B. T.: 1980, Astrophys. J. 241, pp. 1021–1038.
Evans II, N. J., Zuckerman, B., Sato, T. and Morris, G.: 1975, Astrophys J. 199, pp. 383–397.
Hollenbach, D. J. and McKee, C. F.: 1980, Astrophys. J. (Letters) 241, pp. L47–L50.
Knapp, G. R., Phillips, T. G., Huggins, P. J. and Redman, R. 0.: 1981, Astrophys. J., in press.
Nadeau, D., Geballe, T. R. and Neugebauer, G.: 1981, Astrophys. J. submitted.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1982 D. Reidel Publishing Company
About this paper
Cite this paper
Geballe, T.R., Nadeau, D. (1982). Observations and Interpretation of the Line Profiles of Excited H2 in Orion. In: Roger, R.S., Dewdney, P.E. (eds) Regions of Recent Star Formation. Astrophysics and Space Science Library, vol 93. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-7778-5_20
Download citation
DOI: https://doi.org/10.1007/978-94-009-7778-5_20
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-009-7780-8
Online ISBN: 978-94-009-7778-5
eBook Packages: Springer Book Archive