Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...237..627s&link_type=abstract
Astrophysical Journal, Part 1, vol. 237, Apr. 15, 1980, p. 627-632. Research sponsored by the Koninklijke Nederlandse Akademie
Astronomy and Astrophysics
Astronomy
5
Albedo, Neptune (Planet), Planetary Atmospheres, Ultraviolet Astronomy, Uranus (Planet), Astronomical Netherlands Satellite, Broadband, G Stars, Hydrogen, Raman Spectra, Rayleigh Scattering, Ultraviolet Absorption, Ultraviolet Spectrometers, Planets, Neptune, Uranus, Ultraviolet, Albedo, Spectrum, Observations, Ans, Data, Wavelengths, Scattering, Absorption, Aerosols, Particles, Gases, Atmosphere, Spectrometer, Procedure, Comparisons, Calibration, Flux, Models, Hydrogen
Scientific paper
Observations on Uranus, Neptune, and four G-type stars which were obtained with the five channel ultraviolet spectrometer aboard the Astronomical Netherlands Satellite are reported. The paper uses these data to derive geometric albedos between 1800 and 3300 A for Uranus and between 2200 and 3300 A for Neptune. It is shown that the albedos are in good agreement with ground measurements near 3300 A and with OAO 2 measurements near 2500 A. In addition, it is noted that the albedos are smaller than theoretical predictions for deep pure H2 Rayleigh-Raman scattering atmospheres, which confirms earlier predictions that additional sources of ultraviolet absorption are required in the upper atmosphere of these planets. Consideration is given to the possibility that the Uranian atmosphere contains an extra absorber, noting that the identification of this absorber is difficult from broad-band spectrophotometric measurements.
Cochran William D.
Savage Blair. D.
Wesselius R.. P.
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