No evidence of rings around Neptune

Details No evidence of rings around Neptune No evidence of rings around Neptune

Dec 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981natur.294..526e&link_type=abstract

Nature, vol. 294, Dec. 10, 1981, p. 526-529.

Computer Science

25

Neptune (Planet), Ring Structures, Stellar Occultation, Planetary Orbits, Voyager Project, Neptune, Rings, Observations, Occultations, Optical Properties, Depth, Techniques, Data, Regions, Telescopic Observations, Intensity, Flux, Satellites, Procedure, Comparisons

Scientific paper

The results of two observations of stellar occultations of Neptune to determine if the planet has a ring system are reported. The sightings were made from Mt. Stromlo, Mauna Kea, and Cerro Tololo, noting that an equatorial ring would subtend only two arcsec of view. An upper accretion limit was defined to set the region around Neptune where rings, rather than satellites, could form. The intensities of the starlight from the two selected stars were recorded by photometers on magnetic tape during the occultation period. One of the stars did not occult, but passed through the entire region where a ring system might be present. No definitive evidence for rings was found, although an optical depth for a Neptunian ring was calculated at 0.07, with a width of more than 5 km and a radius of 31,400 km.

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