Images of Neptune's ring arcs obtained by a ground-based telescope

B. Sicardy, F. Roddier, C. Roddier, E. Perozzi, J. E. Graves, Olivier Guyon, M. J. Northcott

Research output: Contribution to journalArticle

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Abstract

Neptune has a collection of incomplete narrow rings, known as ring arcs, which should in isolation be destroyed by differential motion in a matter of months. Yet since first discovered by stellar occultations in 1984, they appear to have persisted, perhaps through a gravitational resonance effect involving the satellite Galatea. Here we report ground-based observations of the ring arcs, obtained using an adaptive optics system. Our data, and those obtained using the Hubble Space Telescope (reported in a companion paper), indicate that the ring arcs are near, but not within the resonance with Galatea, in contrast to what is predicted by some models.

Original languageEnglish (US)
Pages (from-to)731-733
Number of pages3
JournalNature
Volume400
Issue number6746
DOIs
StatePublished - Aug 19 1999
Externally publishedYes

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Neptune (planet)
Galatea
arcs
telescopes
rings
stellar occultation
adaptive optics
Hubble Space Telescope
isolation

ASJC Scopus subject areas

  • General

Cite this

Sicardy, B., Roddier, F., Roddier, C., Perozzi, E., Graves, J. E., Guyon, O., & Northcott, M. J. (1999). Images of Neptune's ring arcs obtained by a ground-based telescope. Nature, 400(6746), 731-733. https://doi.org/10.1038/23410

Images of Neptune's ring arcs obtained by a ground-based telescope. / Sicardy, B.; Roddier, F.; Roddier, C.; Perozzi, E.; Graves, J. E.; Guyon, Olivier; Northcott, M. J.

In: Nature, Vol. 400, No. 6746, 19.08.1999, p. 731-733.

Research output: Contribution to journalArticle

Sicardy, B, Roddier, F, Roddier, C, Perozzi, E, Graves, JE, Guyon, O & Northcott, MJ 1999, 'Images of Neptune's ring arcs obtained by a ground-based telescope', Nature, vol. 400, no. 6746, pp. 731-733. https://doi.org/10.1038/23410
Sicardy B, Roddier F, Roddier C, Perozzi E, Graves JE, Guyon O et al. Images of Neptune's ring arcs obtained by a ground-based telescope. Nature. 1999 Aug 19;400(6746):731-733. https://doi.org/10.1038/23410
Sicardy, B. ; Roddier, F. ; Roddier, C. ; Perozzi, E. ; Graves, J. E. ; Guyon, Olivier ; Northcott, M. J. / Images of Neptune's ring arcs obtained by a ground-based telescope. In: Nature. 1999 ; Vol. 400, No. 6746. pp. 731-733.
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