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A high-resolution infrared spectral survey of Comet C/1999 H1 Lee |
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| Authors: | Neil Dello Russo Michael J. Mumma Karen Magee-Sauer Boncho P. Bonev I.S. McLean |
| Affiliation: | a Department of Physics, The Catholic University of America, Washington, DC 20064, USA b Solar System Exploration Division, NASA Goddard Space Flight Center, Code 690, Greenbelt, MD 20771, USA c The Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723-6099, USA d Planetary Systems Laboratory, Solar System Exploration Division, NASA Goddard Space Flight Center, Code 693, Greenbelt, MD 20771, USA e Department of Chemistry and Physics, Rowan University, Glassboro, NJ 08028, USA f Department of Physics and Astronomy, University of Missouri-St. Louis, St. Louis, MO 63121, USA g Ritter Astrophysical Research Center, Department of Physics and Astronomy, The University of Toledo, Toledo, OH 43606, USA h Department of Physics and Astronomy, University of California, Los Angeles, Los Angeles, CA 90095-1562, USA i Department of Physical Sciences, Centre for Laser, Atomic and Molecular Sciences, University of New Brunswick, Saint John, NB E2L 4L5, Canada |
| Abstract: | We obtained high-resolution (λ/Δλ∼25,000) spectra of Comet C/1999 H1 (Lee) on UT 1999 August 19.6 and 21.6 using the cross-dispersed Near InfraRed SPECtrometer (NIRSPEC) at the Keck Observatory atop Mauna Kea, HI. Here we present spectra of Comet Lee between 2.874 and 3.701 μm (3479-2702 cm−1) representing the most complete high-resolution infrared survey of a comet to date in this wavelength region. Using published line lists and laboratory spectra we have identified 444 of the 545 distinct emission features present in these spectra. We have tabulated the rest frequencies, assignments, relative intensities, and signal-to-noise ratios of all detected emissions. In addition to gaining insights into the chemistry of Comet Lee, this survey provides a valuable tool for planning future high-resolution infrared observations of comets and other astronomical targets, and for retrospective comparison to existing high-resolution infrared datasets. |
| Keywords: | Comets Infrared Observations Spectroscopy |
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