Abstract
view Abstract Citations (46) References (17) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Evidence for weather on Neptune. I. Joyce, R. R. ; Pilcher, C. B. ; Cruikshank, D. P. ; Morrison, D. Abstract Between April 1975 and March 1976 the reflectance of Neptune between 1 and 4 microns increased substantially. A spectrum taken at these wavelengths near the period of peak observed brightness showed a low-intensity continuum with weak superposed absorptions caused by CH4 and H2. Photographic spectra of the planet measured during the same period showed no differences from older published data. The gas abundances derived from the infrared spectrum, 5 plus or minus 2 km-amagat of H2 at a base density of 0.26 plus or minus 0.08 am and no more than about 1 m-am of CH4, appear to refer to an effective reflecting level high in the atmosphere of Neptune. Publication: The Astrophysical Journal Pub Date: June 1977 DOI: 10.1086/155291 Bibcode: 1977ApJ...214..657J Keywords: Infrared Spectra; Neptune (Planet); Planetary Atmospheres; Weather; Absorption Spectra; Cloud Cover; Line Spectra; Methane; Spectral Line Width; Spectral Reflectance; Spectrum Analysis; Lunar and Planetary Exploration full text sources ADS |
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