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Scientific paper
Aug 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989georl..16..969t&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 16, Aug. 1989, p. 969-972. Research supported by Cornell University.
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6
Atmospheric Scattering, Optical Thickness, Satellite Atmospheres, Satellite Surfaces, Triton, Constraints, Methane, Ultraviolet Spectra, Voyager 2 Spacecraft, Neptune, Satellites, Triton, Scattering, Models, Hypotheses, Surface, Atmosphere, Spectra, Optical Properties, Depth, Absorption, Brightness, Albedo, Temperature, Methane, Nitrogen, Ice, Density, Opacity, Haze, Wavelengths, Photometry, Lightcurves, Thickness
Scientific paper
Modeling of Triton's spectrum indicates a bright scattering layer of optical depth tau about 3 overlying an optically deep layer of CH4 with high absorption and little scattering. UV absorption in the spectrum indicates tau about 0.3 of red-yellow haze, although some color may also arise from complex organics partially visible on the surface. An analysis of this and other (spectro)photometric evidence indicates that Triton most likely has a bright surface, which was partially visible in 1977-1980. Geometric albedo p = 0.62 + 0.18 or - 0.12 radius r = 1480 + or - 180 km, and temperature T = 48 + or - 6 K. With scattering optical depths of 0.3-3 and about 1-10 mb of N2, a Mars-like atmospheric density and surface visibility pertain.
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