Huggins, P. J. and Phillips, T. G. and Neugebauer, G. and Werner, M. W. and Wannier, P. G. and Ennis, D. (1979) The detection of the J = 3-2 lines of HCN, HNC, and HCO^+ in the Orion molecular cloud. Astrophysical Journal, 227 . pp. 441-445. ISSN 0004-637X. doi:10.1086/156750. https://resolver.caltech.edu/CaltechAUTHORS:20170303-153447009
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Abstract
We report the first measurements of the 1.1 mm (J = 3-2) lines of HCN, HNC, and HCO^+ in the Orion molecular cloud. The low-intensity broad velocity wings seen in the (1-0) lines of HCN and HCO^+ are greatly enhanced in the HCN (3-2) line but not in HCO^+ (3-2). No broad wings are seen in the HNC (3-2) line. The HCN observations suggest molecular hydrogen densities ~ 10^6 cm^(-3) in the broad wing source, and the differences between the lines of HCN and HCO^+ suggest that the lines may be formed in different regions within the source.
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| Additional Information: | © 1979 American Astronomical Society. Received 1978 June 19; accepted 1978 July 24. We wish to thank the staff of the 200 inch for extending their normal work schedule to include daylight radio observations. The work done at Caltech was supported by the National Aeronautics and Space Administration grant NGL 05-002-207. | |||||||||
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| Subject Keywords: | interstellar: molecules line identifications nebulae: Orion Nebula radio sources: lines | |||||||||
| DOI: | 10.1086/156750 | |||||||||
| Record Number: | CaltechAUTHORS:20170303-153447009 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20170303-153447009 | |||||||||
| Official Citation: | The detection of the J = 3-2 lines of HCN, HNC, and HCO/+/ in the Orion molecular cloud Huggins, P. J., Phillips, T. G., Neugebauer, G., Werner, M. W., Wannier, P. G., & Ennis, D., , Astrophysical Journal, Part 1, vol. 227, Jan. 15, 1979, p. 441-445. | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 74737 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | INVALID USER | |||||||||
| Deposited On: | 06 Mar 2017 17:14 | |||||||||
| Last Modified: | 11 Nov 2021 05:29 |
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