Other
Scientific paper
Dec 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993mnras.265.1022d&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 265, p. 1022
Other
15
Comets, Infrared Spectra, Emission Spectra, Chemical Composition, Interstellar Chemistry, Methyl Alcohol, Fluorescence, Spectrum Analysis
Scientific paper
We present an IR spectrum of Comet P/Swift-Tuttle which exhibits broad emission features at 3.4 and 3.52 microns with fluxes of (5.7 +/- 0.25) x 10 exp -15 and (0.8 +/- 0.14) x 10 exp -1/sq Wm, respectively, but has no pronounced feature near 3.28 microns. We show that the 3.52-micron feature and much of the 3.4-micron emission can be attributed to fluorescence from methanol, but that some other source is required to explain residual emission centred on 3.43 microns. The derived methanol production rate is (1.6 + 0.3) x 10 exp 28 molecules/s, which implies a ratio of methanol to water of approximately 0.05, a value more typical of dynamically new comets than of periodic comets.
Davies John K.
Hoban Susan
Lumsden Stuart L.
Mumma Michael J.
Puxley Phil J.
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