Infrared Observations of the Uranian System

@article{Hanel1986InfraredOO,
  title={Infrared Observations of the Uranian System},
  author={R. Hanel and B. Conrath and F. Flasar and V. Kunde and W. Maguire and J. Pearl and J. Pirraglia and R. Samuelson and D. Cruikshank and D. Gautier and P. Gierasch and L. Horn and P. Schulte},
  journal={Science},
  year={1986},
  volume={233},
  pages={70 - 74}
}
The infrared interferometer spectrometer (IRIS) on Voyager 2 recorded thermal emission spectra of Uranus between 200 and 400 cm-1 and of Miranda and Ariel between 200 and 500 cm-1 with a spectral resolution of 4.3 cm-1. Reflected solar radiation was also measured with a single-channel radiometer sensitive in the visible and near infrared. By combining IRIS spectra with radio science results, a mole fraction for atmospheric helium of 0.15 � 0.05 (mass fraction, 0.26 � 0.08) is found. Vertical… Expand
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Voyager 2 images of the southern hemisphere of Uranus indicate that submicrometersize haze particles and particles of a methane condensation cloud produce faint patterns in the atmosphere, and Voyager images confirm the extremely low albedo of the ring particles. Expand
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References

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Voyager 2 Radio Science Observations of the Uranian System: Atmosphere, Rings, and Satellites
TLDR
Voyager 2 radio occultation measurements of the Uranian atmosphere suggest a new kdnd of planetary ring feature characterized by highly ordered cylindrical substructures of radial scale on the order of meters and azimuthal scale of kilometers or more. Expand
Infrared Observations of the Saturnian System from Voyager 2
TLDR
During the passage of Voyager 2 through the Saturn system, infrared spectral and radiometric data were obtained for Saturn, Titan, Enceladus, Tethys, Iapetus, and the rings, suggesting an approximate symmetry in the small-scale structure. Expand
Voyager 2 in the Uranian System: Imaging Science Results
TLDR
Voyager 2 images of the southern hemisphere of Uranus indicate that submicrometersize haze particles and particles of a methane condensation cloud produce faint patterns in the atmosphere, and Voyager images confirm the extremely low albedo of the ring particles. Expand
Atmospheric temperature profiles of Uranus and Neptune
Far-infrared spectrophotometry of Uranus and Neptune in the 30-55 micron spectral range is presented. The measurements in the present six independent spectral bands allow the derivation ofExpand
The helium abundance of Saturn from Voyager measurements
Voyager radio-occultation and IR spectroscopy measurements are combined to infer an He mole fraction in the upper troposphere of Uranus of 0.152 + or - 0.033; the corresponding mass fraction is Y =Expand
The Uranian satellites and Hyperion - New spectrophotometry and compositional implications
Abstract New reflectance spectra at 3.5% resolution have been obtained for Ariel, Titania, Oberon, and Hyperion in the 0.8- to 1.6-μm spectral region. The new spectra show no absoptions other thanExpand
The helium abundance of Jupiter from Voyager
The helium abundance in the Jovian atmosphere is derived from Voyager 1 data by two methods. The first method uses only infrared spectra from selected locations on the planet while the second methodExpand
The infrared spectrum of Rhea
Abstract A new infrared spectrum of the leading side of Rhea is presented in the 0.65- to 2.5 μm region with 1.5% spectral resolution and 3 to 5% data precision. Water ice absorptions previouslyExpand
The seasonal variation of the thermal structure of the atmosphere of Uranus
Abstract A series of time-dependent radiative/convective models are presented for the atmosphere of Uranus. The effects of atmospheric dynamics have been omitted from the models. The inclination ofExpand
Infrared spectrometer for Voyager.
The Voyager IR investigation uses a Michelson interferometer with a 4.3-cm(-1) spectral resolution in the 80-2500-cm(-1) range and a single-channel radiometer for the visible and near-IR,Expand
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