Physics
Scientific paper
Jun 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988icar...74..413c&link_type=abstract
Icarus (ISSN 0019-1035), vol. 74, June 1988, p. 413-423.
Physics
38
Atmospheric Composition, Infrared Spectra, Methane, Satellite Atmospheres, Triton, Absorption Spectra, Planetary Composition, Spectrum Analysis, Neptune, Satellites, Triton, Earth-Based Observations, Infrared, Frost, Wavelengths, Spectra, Methane, Ice, Comparisons, Grain Size, Composition, Atmosphere, Laboratory Studies, Nitrogen
Scientific paper
The authors report new infrared spectra of Triton in which the methane band at 2.3 μm is shown in greater detail than in previous data. The spectral band at 2.15 μm reported by D. P. Cruikshank et al. (1984) is also present. Comparisons are made with methane ice spectra and with laboratory spectra of methane dissolved in liquid nitrogen. Based on these comparisons, it is concluded that the 2.3-μm band in Triton's spectrum cannot be attributed entirely to methane gas. The new spectral data support the earlier evidence for both methane and molecular nitrogen on Triton, but the physical state of these constituents remains uncertain.
Brown Harvey R.
Cruikshank Dale P.
Piscitelli Joseph R.
Smith Gary R.
Tokunaga Alan T.
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