Ground-based studies of Jupiter, Uranus, and Neptune in support of the Galileo and Voyager missions

Details Ground-based studies of Jupiter, Uranus, and Neptune in support of the Galileo and Voyager missions Ground-based studies of Jupiter, Uranus, and Neptune in support of the Galileo and Voyager missions

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986plas.rept...57s&link_type=abstract

In NASA, Washington Reports of Planetary Astronomy, 1985 p 57-59 (SEE N87-12407 03-89)

Astronomy and Astrophysics

Astronomy

Jupiter (Planet), Neptune (Planet), Planetary Atmospheres, Planetary Composition, Uranus (Planet), Atmospheric Pressure, Atmospheric Temperature, Deuterium Compounds, Galileo Project, Planetary Evolution, Voyager Project

Scientific paper

Profiles were obtained for Uranus at a spectral resolution exceeding 450,000 for four quadrupole lines of H2. A preliminary reduction of the line profile for the S3(0) transition is shown. Excellent data for the determination of the HD abundance for Uranus was obtained for the R5(0) and R5(1) transitions. An HD profile is shown. Preliminary analysis yields a value for the D/H ratio similar to that for Jupiter. Complete spatial coverage was obtained of Jupiter in spectrally resolved NH3 lines for which the molecular parameters are known. The S4(1) and S3(1) H2 features for Neptune were observed. While the S4(1) feature has the same equivalent width as for Uranus, the S3(1) feature is about 40% smaller. The Titan observations have confirmed the previous observations of the 6819 A CH4 feature for Titan. The profile width is consistent with the surface pressure determined via Voyager observations.

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