Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976sci...194..107a&link_type=abstract
Science, vol. 194, Oct. 1, 1976, p. 107-109.
Astronomy and Astrophysics
Astronomy
6
Infrared Astronomy, Jupiter Atmosphere, Planetary Temperature, Spaceborne Astronomy, Thermal Radiation, Atmospheric Models, Brightness Temperature, Carbon Dioxide, Infrared Spectroscopy, Michelson Interferometers, Pioneer 10 Space Probe, Spectral Energy Distribution, Temperature Distribution
Scientific paper
Spectroscopic measurements of the thermal radiation from Jupiter between 12 and 24 micrometers (420 to 840 reciprocal centimeters) with a resolution of 4 reciprocal centimeters are used to infer the Jovian temperature structure in the pressure region from 0.1 to 0.4 atmosphere. The brightness-temperature spectrum is in good agreement with previous ground-based measurements between 11 and 13 micrometers and with airborne measurements between 18 and 25 micrometers. However, the integrated flux calculated for a filter window and viewing angle equivalent to those of the 20-micrometer channel of Pioneer 10 is 20 per cent below that measured by the Pioneer infrared radiometer. The Q branch of the nu-5 fundamental band of acetylene at 730 reciprocal centimeters appears in emission and leads to a mixing-ratio estimate of 10 to the -6th (plus or minus 0.5) power.
Aumann Hartmut H.
Orton Glenn S.
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