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Showing 1–5 of 5 results
Advanced filters: Author: Yann Alibert Clear advanced filters

  • Simulations show that the system of three Neptune-mass planets is in a dynamically stable configuration, with theoretical calculations favouring a mainly rocky composition for both inner planets, but a significant gaseous envelope surrounding a rocky/icy core for the outer planet.

    • Christophe Lovis
    • Michel Mayor
    • Jean-Pierre Sivan
    Research
    Nature
    Volume: 441, P: 305-309

  • Cosmochemical evidence is used to constrain models of Jupiter formation, which unfolds in three distinct phases: a rapid pebble accretion during the first Myr, followed by a slower growth controlled by larger planetesimals, ending in a runaway gas accretion stage.

    • Yann Alibert
    • Julia Venturini
    • Maria Schönbächler
    Research
    Nature Astronomy
    Volume: 2, P: 873-877

  • Absorption lines of iron in the dayside atmosphere of an ultrahot giant exoplanet disappear after travelling across the nightside, showing that the iron has condensed during its travel.

    • David Ehrenreich
    • Christophe Lovis
    • Filippo Zerbi
    Research
    Nature
    Volume: 580, P: 597-601

  • 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

  • The initial abundance of 26Al in a planetary system determines the surface environment of its solid planets. High levels of 26Al will dehydrate planetesimals and produce water-poor worlds similar to the terrestrial planets in our Solar System; sub-solar levels of 26Al will preferentially generate ocean planets.

    • Tim Lichtenberg
    • Gregor J. Golabek
    • Christoph Mordasini
    Research
    Nature Astronomy
    Volume: 3, P: 307-313