Jupiter: an unidentified feature in the 5-micron spectrum of the north equatorial belt.
Grating spectra of the North Equatorial Belt of Jupiter 4.5 and 5.1 microns, obtained with a nominal resolving power of 180, are presented. An absorption feature centered at 4.73 microns and not due to a known constituent has been found. Its possible identification is discussed.
Mlnch
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Neugebauer
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