HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

Saturn's F ring and shepherd satellites a natural outcome of satellite system formation

Abstract : Saturn's F ring is a narrow ring of icy particles, located 3,400 km beyond the outer edge of the main ring system. Enigmatically, the F ring is accompanied on either side by two small satellites, Prometheus and Pandora, which are called shepherd satellites. The inner regular satellites of giant planets are thought to form by the accretion of particles from an ancient massive ring and subsequent outward migration. However, the origin of a system consisting of a narrow ring and shepherd satellites remains poorly understood. Here we present N-body numerical simulations to show that a collision of two of the small satellites that are thought to accumulate near the main ring's outer edge can produce a system similar to the F ring and its shepherd satellites. We find that if the two rubble-pile satellites have denser cores, such an impact results in only partial disruption of the satellites and the formation of a narrow ring of particles between two remnant satellites. Our simulations suggest that the seemingly unusual F ring system is a natural outcome at the final stage of the formation process of the ring-satellite system of giant planets.
Document type :
Journal articles
Complete list of metadata

https://hal-insu.archives-ouvertes.fr/insu-03579669
Contributor : Nathalie Pothier Connect in order to contact the contributor
Submitted on : Friday, February 18, 2022 - 11:05:25 AM
Last modification on : Sunday, February 20, 2022 - 3:32:44 AM

Identifiers

Citation

Ryuki Hyodo, Keiji Ohtsuki. Saturn's F ring and shepherd satellites a natural outcome of satellite system formation. Nature Geoscience, 2015, 8, pp.686-689. ⟨10.1038/ngeo2508⟩. ⟨insu-03579669⟩

Share

Metrics

Record views

4