Spectrometry of Jupiter at selected locations on the disk during the 1979 apparition

Abstract

view Abstract Citations (10) References (9) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Spectrometry of Jupiter at selected locations on the disk during the 1979 apparition Cochran, A. L. ; Trafton, L. ; Cochran, W. D. ; Barker, E. S. Abstract Jupiter's reflectivity was measured as a function of wavelength between 3000 and 10,500 Angstrom for two nights during the 1979 apparition. The spectra obtained were used to calibrate the wavelength response of Voyager images and to establish differences from previous apparitions. The observations were taken in the prominent belts and zones and both polar caps along the central meridian using a slit of dimensions 2.33 x 2.5 sq arcsec. The equivalent widths of the 6190 and 7270 Angstrom CH4 bands were measured; compared to the 1976 apparition, there was significantly less CH4 absorption in the north tropical zone. Such equivalent-width decreases are said to result from either a reduction in particle albedo or a decrease in the scattering mean free path owing to a greater concentration of aerosol particles in the NTrZ. Publication: The Astronomical Journal Pub Date: July 1981 DOI: 10.1086/112987 Bibcode: 1981AJ.....86.1101C Keywords: Astronomical Spectroscopy; Jupiter (Planet); Satellite-Borne Instruments; Emission Spectra; Methane; Planetary Rotation; Polar Caps; Tropical Regions; JUPITER; SPECTROMETRY; DISK; REFLECTIVITY; WAVELENGTHS; CALIBRATIONS; VOYAGER; OBSERVATIONS; ZONES; POLAR REGIONS; BANDS; BANDWIDTHS; DATA; METHANE; ABSORPTION; DATA REDUCTION; SPECTRUM; AMMONIA; SCATTERING; AEROSOLS; PARTICLES; ATMOSPHERE; ALBEDO; Lunar and Planetary Exploration; Jupiter full text sources ADS |