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Interstellar H^+_3: possible detection of the 1_(10)→1_(11) transition of H_2D^+

Phillips, T. G. and Blake, Geoffrey A. and Keene, Jocelyn and Woods, R. Claude and Churchwell, E. (1985) Interstellar H^+_3: possible detection of the 1_(10)→1_(11) transition of H_2D^+. Astrophysical Journal Letters, 294 . L45-L48. ISSN 2041-8205.

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An interstellar line has been detected in emission at the expected submillimeter wavelength of the 1_(10)→1_(11) transition of H_(2)D^+, the deuterated version of the primary ion (H^(+)_(3)) in the favored ion-molecule reaction scheme for interstellar gas phase chemistry. The strength of the line is in approximate agreement with the theoretically anticipated H_(2)D^+ abundance.

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Additional Information:© 1985 American Astronomical Society. Received 1985 March 8; accepted 1985 April 1. We would like to thank E. N. Grossman for helping with these observations, the crew of the Kuiper Airborne Observatory for their valuable assistance, and H. M. Pickett for the loan of the klystron local oscillator used in this experiment. Also, we thank E. Herbst for providing numerical values from the H_(2)D^+ /H^(+)_(3) fractionation calculation and for helpful discussions. These observations were supported by NASA grant NAG 2-1 to Caltech, and NSF grants CHE 82-06194 and AST 79-05578 to the University of Wisconsin.
Funding AgencyGrant Number
NSFCHE 82-06194
NSFAST 79-05578
Subject Keywords:deuterium; interstellar: molecules; molecular processes
Record Number:CaltechAUTHORS:20120917-103027428
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:34135
Deposited By: Jason Perez
Deposited On:17 Sep 2012 20:52
Last Modified:29 Aug 2014 14:47

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