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Showing 1–9 of 9 results
Advanced filters: Author: Sebastien Charnoz Clear advanced filters

  • A population of Saturn's small moons orbiting outside the main rings are less than 107 years old, which is inconsistent with the formation timescale for the regular satellites. They may have accreted at the rings' edge, but hitherto it has been impossible to model the accretion process. Here a simulation is reported in which the viscous spreading of Saturn's rings beyond the Roche limit gives rise to the small moons.

    • Sébastien Charnoz
    • Julien Salmon
    • Aurélien Crida
    Research
    Nature
    Volume: 465, P: 752-754

  • Simulations show that the still-mysterious origin of Saturn's vast, icy rings could be explained by the 'peeling' by Saturn's tides of the icy mantle of a large satellite migrating towards the planet. See Letter p.943

    • Aurélien Crida
    • Sébastien Charnoz
    News & Views
    Nature
    Volume: 468, P: 903-905

  • Mars has two small moons that may have formed in the aftermath of a giant impact. Simulations suggest that Phobos and Deimos accreted from the disperse outer region of the debris disc that was stirred up by short-lived larger moons.

    • Pascal Rosenblatt
    • Sébastien Charnoz
    • Stéven Toupin
    Research
    Nature Geoscience
    Volume: 9, P: 581-583

  • Measurements from Cassini’s Grand Finale, when the spacecraft flew between Saturn and its rings, have been used to claim that the rings are much younger than the planet itself. However, this interpretation does not solve all of the inconsistencies, and the question of the age of Saturn’s rings is still open.

    • Aurélien Crida
    • Sébastien Charnoz
    • Luke Dones
    Reviews
    Nature Astronomy
    Volume: 3, P: 967-970

  • Three planets orbit the Sun-like star ν2 Lupi. CHEOPS data show that all of them are transiting and show remarkable diversity. In particular, dry and gas-poor inner planet b has experienced extensive atmospheric loss, while planets c and d are water rich and have a small gaseous envelope of primordial origin.

    • Laetitia Delrez
    • David Ehrenreich
    • Nicholas A. Walton
    Research
    Nature Astronomy
    Volume: 5, P: 775-787

  • A report giving direct evidence of moonlets embedded in the bright core of Saturn's F ring, and showing that most of the F ring's morphology results from the continual gravitational and collisional effects of small satellites, often combined with the perturbing effect of Prometheus.

    • Carl D. Murray
    • Kevin Beurle
    • Sébastien Charnoz
    Research
    Nature
    Volume: 453, P: 739-744