Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989sci...245..283c&link_type=abstract
Science (ISSN 0036-8075), vol. 245, July 21, 1989, p. 283-286.
Astronomy and Astrophysics
Astronomy
19
Satellite Atmospheres, Satellite Surfaces, Triton, Atmospheric Composition, Methane, Nitrogen, Seeing (Astronomy), Spectral Reflectance, Voyager Project, Neptune, Satellites, Triton, Surface, Atmosphere, Methane, Nitrogen, Ice, Spectra, Absorption, Condensation, Reflectance, Haze, Thickness, Optical Properties, Abundance, Infrared, Telescope Methods, Comparisons, Earth-Based Observations, Brightness, Composition
Scientific paper
The quantity and physical state of methane and nitrogen in the atmosphere of Neptune's satellite Triton and on the surface are evaluated by means of new telescopic data and laboratory measurements of these volatiles. Methane ice is seen in some spectral regions, indicating that the atmosphere is sufficiently transparent to permit sunlight penetration to the surface. Some of the molecular nitrogen absorption occurs in the atmosphere, though some must occur in condensed nitrogen (liquid or solid) on Triton's surface, or in a thin cloud of condensed nitrogen. The Voyager spacecraft cameras should see the surface of Triton.
Brown Harvey R.
Cruikshank Dale P.
Giver Lawrence P.
Tokunaga Alan T.
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