The detection of a strong 3.28-micron emission feature in Comet Levy

Details The detection of a strong 3.28-micron emission feature in Comet Levy The detection of a strong 3.28-micron emission feature in Comet Levy

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.251..148d&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 251, July 1, 1991, p. 148-151.

Other

17

Comets, Emission Spectra, Infrared Spectra, Astronomical Spectroscopy, Interstellar Matter

Scientific paper

An infrared spectrum of Comet Levy was obtained on August 27, 1990 when the comet was 1.4 AU from the sun. In addition to the broad emission feature at 3.4 microns seen in a number of comets, the spectrum clearly shows emission at 3.28 microns which is stronger, relative to the 3.4-micron feature, than in any other comet yet observed. The ratio of emission in the 3.4-micron band to the rate of water production is the lowest yet observed in a comet and is consistent with the tendency for the ratio to decrease with increasing heliocentric distance.

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