Charged-coupled device spectral images of spatially resolved regions of Jupiter in the 6,190- and 8,900- angstrom methane and 6,450- angstrom ammonia bands during the 1989 opposition
- Inst. de Astrofisica de Andalucia, Granada (Spain)
- Inst. de Astrofisica de Andalucia, Granada (Spain) Univ. de Granada (Spain)
High-quality charge-coupled device spectroscopic observations at different regions of Jupiter in the spectral regions {lambda}{lambda} 6,000-6,600 and 8,700-9,200 {angstrom} at a resolution of 1.2 {angstrom} have been obtained. These spectra allowed the authors to obtain the center-to-limb curves of the equivalent widths of the CH{sub 4} 6,190-{angstrom} band, the NH{sub 3} 6,450-{angstrom} band, and the band depth of the 8,900-{angstrom} band, as well as their latitudinal distribution. Some asymmetries in the center-to-limb distribution of the equivalent widths of the CH{sub 4} 6,190-{angstrom} and NH{sub 3} 6,450-{angstrom} bands were detected, as well as a very prominent decrease toward the planetary limbs for the ammonia band. The latitudinal variations of the CH{sub 4} 6,190-{angstrom} and NH{sub 3} 6,450-{angstrom} equivalent widths were strongly correlated for fractional radii less than 0.4, with a maximum of absorption at the North Equatorial Belt. The South Equatorial Belt, undetectable at visible and near-infrared continuum wavelengths, was discernable at {lambda} = 8,900 {angstrom}. Model computations for the Equatorial Region assuming three aerosol layer models gave some constraints on tropospheric atmospheric parameters during the 1989 Jupiter opposition date.
- OSTI ID:
- 5256913
- Journal Information:
- Journal of Geophysical Research; (United States), Vol. 96:A8; ISSN 0148-0227
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GENERAL PHYSICS
JUPITER PLANET
INFRARED SPECTRA
AMMONIA
ASYMMETRY
CHARGE-COUPLED DEVICES
CHEMICAL COMPOSITION
CORRELATIONS
LATITUDE EFFECT
MATHEMATICAL MODELS
METHANE
PLANETARY ATMOSPHERES
VARIATIONS
ALKANES
ATMOSPHERES
GEOGRAPHICAL VARIATIONS
HYDRIDES
HYDROCARBONS
HYDROGEN COMPOUNDS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
ORGANIC COMPOUNDS
PLANETS
SEMICONDUCTOR DEVICES
SPECTRA
640107* - Astrophysics & Cosmology- Planetary Phenomena