Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...235l..53c&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 235, Jan. 1, 1980, p. L53, L54.
Astronomy and Astrophysics
Astrophysics
2
Astronomical Photometry, Periodic Variations, Satellite Atmospheres, Titan, Absorption Spectra, Methane, Natural Satellites, Spectrum Analysis, Saturn, Satellites, Titan, Infrared, Spectrum, Wavelengths, Observations, Photometry, Atmosphere, Color, Data, Neptune, Procedure, Brightness, Orbits, Period, Rotation
Scientific paper
Observations were made of Titan with InSb photometers using standard J (1.25 micron), H (1.6 micron), and K (2.2 micron) filters over a 70 day interval with 0.61 m, 2.2 m, and 4 m telescopes. A beam-switching, sky-subtract mode was used with all telescopes, and evidence appears for variation at approximately the 3 sigma level of confidence. There is some indication that, if periodic, the variation may have a period twice that of the satellite's orbital period.
Cruikshank Dale P.
Morgan Jeffrey S.
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