The helium abundance on Jupiter |
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Authors: | Donald M Hunten Guido Münch |
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Institution: | (1) Kitt Peak National Observatory, Tucson, Ariz., USA;(2) California Institute of Technology, Pasadena, Calif., USA |
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Abstract: | Methods of determining helium on Jupiter (and the Jovian planets) are critically surveyed. Current information is consistent with solar abundance, He/H2 = 0.11 by number. The available lines of evidence are the mean density, spectral-line broadening, and stellar occultations. Methods usable from spacecraft flying by are discussed. Observation of far-infrared emission has great promise, but we may have to await the development of entry probes for the greatest assurance.This is one of the publications by the Science Advisory Group. |
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