Zonal Differences in Jupiter's Atmosphere from Continuum CCD Photometry of Its Disk |
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| Authors: | Tejfel V G Kharitonova G A |
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| Institution: | (1) Fesenkov Astrophysical Institute, Academy of Sciences of Kazakhstan, Kamenskoe Plato, Almaty, 480068, Kazakhstan |
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| Abstract: | Based on our 1997 observations with a CCD camera and narrow-band filters attached to the 1-m Assy Obsev vatory telescope, we extensively study the latitudinal variations in limb darkening and normal albedo on Jupiter's disk at wavelengths of 387, 445, 502, 619, and 702 nm. In addition, we carried out observations in 1998 with broad-band red, green, and blue filters. Apart from a general regularity—the increase in darkening coefficient with normal albedo of Jupiter's cloud cover—there is an appreciable scatter of darkening coefficients for the same albedo, which is most pronounced in the ultraviolet. This scatter may result from differences in the optical depth of the aerosol haze above the clouds. The lack of any wavelength dependence of the darkening coefficients is confirmed for Jupiter's polar regions, while at other latitudes, they decrease with decreasing wavelength. |
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