Triton - A satellite with an atmosphere

Details Triton - A satellite with an atmosphere Triton - A satellite with an atmosphere

Nov 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...233.1016c&link_type=abstract

Astrophysical Journal, Part 1, vol. 233, no. 3, Nov. 1, 1979, p. 1016-1020.

Astronomy and Astrophysics

Astronomy

16

Infrared Astronomy, Infrared Spectra, Natural Satellites, Neptune (Planet), Planetary Atmospheres, Absorption, Methane, Partial Pressure, Reflectance, Spectrophotometry, Neptune, Satellites, Triton, Infrared, Spectrum, Ice, Atmosphere, Absorption, Methane, Vapor Pressure, Models, Data, Telescopic Observations, Equipment, Surface, Spectrophotometry, Wavelengths, Analysis, Albedo, Gases

Scientific paper

A low-resolution infrared spectrum of Triton in the region 1.4-2.6 microns shows a broad absorption at 2.3 microns which is attributed to gaseous methane. The computed surface partial pressure of CH4, based on a random band model extrapolation of new laboratory spectra, is (1 + or - 0.5) times 10 to the -4th bars, a value consistent with the calculated vapor pressure of methane gas above methane ice at the expected temperature of Triton. There is, however, no compelling evidence for the presence of solid CH4 on the satellite's surface.

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