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Earth, Moon, and Planets

, Volume 78, Issue 1–3, pp 71–80 | Cite as

Infrared Spectroscopy of Comet Hale-Bopp

  • H. A. Weaver
  • T. Y. Brooke
  • G. Chin
  • S. J. Kim
  • D. Bockelée-Morvan
  • J. K. Davies
Article

Abstract

High resolution (λ/δλ ∼ 20,000) spectra of comet C/1995 O1 (Hale-Bopp) in the 2–5 μm region were obtained during UT 2–5 March 1997 using CSHELL at the NASA Infrared Telescope Facility (IRTF) on Mauna Kea. The heliocentric and geocentric distances of the comet were ∼1.1 AU and ∼1.5 AU,respectively. We detected emission lines of the gas-phase molecules H2O, 4, C2H6, C2H2, HCN, and CO and derived absolute production rates and relative abundances for all species. We also used the 2-dimensional nature of the CSHELL data to investigate the spatial distribution of the molecules and find evidence that CO was derived at least partly from an extended source in the coma.

Infrared spectroscopy composition comets 

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Copyright information

© Kluwer Academic Publishers 1997

Authors and Affiliations

  • H. A. Weaver
    • 1
  • T. Y. Brooke
    • 2
  • G. Chin
    • 3
  • S. J. Kim
    • 4
  • D. Bockelée-Morvan
    • 5
  • J. K. Davies
    • 5
  1. 1.Department of Physics and AstronomyThe Johns Hopkins UniversityBaltimoreUSA
  2. 2.Jet Propulsion LaboratoryPasadenaUSA
  3. 3.NASA Goddard Space Flight CenterPlanetary Systems BranchGreenbeltUSA
  4. 4.Institute of Natural SciencesKyunghee UniversityYongin, KyunggidoKorea
  5. 5.Observatoire de Meudon-ParisMeudon CedexFrance

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