Astronomy and Astrophysics – Astronomy
Scientific paper
May 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989icar...79....1h&link_type=abstract
Icarus (ISSN 0019-1035), vol. 79, May 1989, p. 1-14.
Astronomy and Astrophysics
Astronomy
14
Astronomical Photometry, Neptune (Planet), Planetary Meteorology, Planetary Radiation, Spectrophotometry, Albedo, Clouds (Meteorology), Continuous Radiation, Infrared Spectra, Light Curve, Planetary Rotation, Zonal Flow (Meteorology), Neptune, Photometry, Methane, Wavelengths, Spectrophotometry, Clouds, Ccd Methods, Lightcurves, Atmosphere, Rotation, Timescale, Techniques, Reflectivity, Earth-Based Observations, Analysis, Diurnal Variations, Surface, Brightness, Data, Period
Scientific paper
The present disk-integrated photometry of Neptune, which was obtained in 1986 and 1987, is used to study the diurnal and short-term variability; the fact that this photometry was obtained from high-resolution CCD images allows the discrete cloud features' causing of the rotational lightcurve seen at methane-band wavelengths to be definitively demonstrated. A quiescent state of the Neptune atmosphere is suggested by the planet's 8900 A reflectivity in the absence of bright clouds, appears to have remained nearly constant over the observational period.
Hammel Heidi Beth
Kreidl Tobias J.
Lark Neil L.
Rigler Michael
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