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Laboratory measurement of the pure rotational spectrum of vibrationally excited HCO^+ (v_2 = 1) by far-infrared laser sideband spectroscopy

Blake, Geoffrey A. and Laughlin, K. B. and Cohen, R. C. and Busarow, Kerry L. and Saykally, R. J. (1987) Laboratory measurement of the pure rotational spectrum of vibrationally excited HCO^+ (v_2 = 1) by far-infrared laser sideband spectroscopy. Astrophysical Journal Letters, 316 . L45-L48. ISSN 0004-637X. http://resolver.caltech.edu/CaltechAUTHORS:20120912-085707147

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Abstract

Laboratory observations of the pure rotational spectrum of HCO^+ in its lowest excited bending state (v_1, v^l_2 v_3)_= (0,1^1,0) are reported. Because of their severe excitation requirements, such vibrational satellites and the high-J ground-state lines also measured here sample only hot, dense regions of matter in active molecular cloud cores and circumstellar envelopes. As the HCO^+ abundance is tied directly to the gas fractional ionization, it is probable that the vibrationally excited formyl ion transitions will provide high-contrast observations of shocked molecular material, rather than the more quiescent, radiatively heated gas surrounding stellar sources detected with the few vibrationally excited neutral species observed to date.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1086/184889DOIUNSPECIFIED
http://adsabs.harvard.edu//abs/1987ApJ...316L..45BPublisherUNSPECIFIED
Additional Information:© 1987 American Astronomical Society. Provided by the NASA Astrophysics Data System. Received 1987 January 12; accepted 1987 February 9. G. A. B. and R. J. S. gratefully acknowledge financial support provided by the Berkeley Miller Research Institute, and K. B. L. thanks the NSF for a predoctoral fellowship. This work was supported by the Structure and Thermodynamics Program of the National Science Foundation, grant CHE-8402861.
Funders:
Funding AgencyGrant Number
NSF Structure and Thermodynamics ProgramCHE-8402861
Berkeley Miller Basic Research InstituteUNSPECIFIED
NSF Predoctoral Fellowship UNSPECIFIED
Subject Keywords:interstellar: molecules; laboratory spectra
Record Number:CaltechAUTHORS:20120912-085707147
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20120912-085707147
Official Citation:Laboratory measurement of the pure rotational spectrum of vibrationally excited HCO^+ (v_2 = 1) by far-infrared laser sideband spectroscopy Blake, Geoffrey A.; Laughlin, K. B.; Cohen, R. C.; Busarow, Kerry L.; Saykally, R. J.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:34016
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:12 Sep 2012 16:24
Last Modified:26 Dec 2012 16:09

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