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Numerical Simulations of (10199) Chariklo’s Rings with a Resonant Perturber
The Planetary Science Journal Pub Date : 2024-02-06 , DOI: 10.3847/psj/ad151c Amanda A. Sickafoose , Mark C. Lewis
The Planetary Science Journal Pub Date : 2024-02-06 , DOI: 10.3847/psj/ad151c Amanda A. Sickafoose , Mark C. Lewis
The discovery of two thin rings around the ∼ 250 km sized Centaur Chariklo was the first of its kind, and their formation and evolutionary mechanisms are not well understood. Here, we explore a single shepherd satellite as a mechanism to confine Chariklo’s rings. We also investigate the impact of such a perturber on reaccretion, which is a likely process for material located outside the Roche limit. We have modified N -body code that was developed for Saturn’s rings to model the Chariklo system. Exploration of a reasonable parameter space indicates that rings like those observed could be stable as the result of a single satellite with a mass of a few ×1013 kg that is in orbital resonance with the rings. There is a roughly linear relationship between the model optical depth and the mass of the satellite required to confine a ring. Ring particles do not accrete into moonlets during hard-sphere simulations. However, a reasonable fraction of the ring material forms into moonlets after a few tens of orbits for soft-sphere collisions. The ring-particle properties are thus key parameters in terms of moonlet accretion or destruction in this system.
更新日期：2024-02-06
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