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Showing 1–10 of 10 results
Advanced filters: Author: François Bouchy 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

  • The detection of an Earth-mass planet orbiting our neighbour star α Centauri B is reported; the planet has an orbital period of 3.236 days and is about 0.04 astronomical units from the star.

    • Xavier Dumusque
    • Francesco Pepe
    • Stéphane Udry
    Research
    Nature
    Volume: 491, P: 207-211

  • Here the authors demonstrate ultraviolet astronomical frequency combs, derived from the near-infrared domain via efficient harmonic generation in nanophotonic waveguides, to provide precision calibration to astronomical spectrographs for exoplanet science and precision cosmology.

    • Markus Ludwig
    • Furkan Ayhan
    • Tobias Herr
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-11

  • A microphotonic astrocomb is demonstrated via temporal dissipative Kerr solitons in photonic-chip-based silicon nitride microresonators with a precision of 25 cm s–1 (radial velocity equivalent), useful for Earth-like planet detection and cosmological research.

    • Ewelina Obrzud
    • Monica Rainer
    • Tobias Herr
    Research
    Nature Photonics
    Volume: 13, P: 31-35

  • 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

  • An Earth-sized planet is observed orbiting a nearby star within the liquid-water, habitable zone, the atmospheric composition of which could be determined from future observations.

    • Jason A. Dittmann
    • Jonathan M. Irwin
    • Courtney D. Dressing
    Research
    Nature
    Volume: 544, P: 333-336

  • LTT 9779 b is Neptune-sized planet rotating around its star with a period of 0.79 days and an equilibrium temperature of 2,000 K. It is not clear how it retained its atmospheric envelope, which contains ~10% of H/He, as it should have been photoevaporated by now.

    • James S. Jenkins
    • Matías R. Díaz
    • Andrew W. Mann
    Research
    Nature Astronomy
    Volume: 4, P: 1148-1157

  • Kepler-107 b and c have the same radius but, contrary to expectations, the outermost Kepler-107 c is much denser. This difference cannot be explained by photoevaporation by stellar high-energy particle flux and it suggests that Kepler-107 c experienced a giant impact event.

    • Aldo S. Bonomo
    • Li Zeng
    • Chris Watson
    Research
    Nature Astronomy
    Volume: 3, P: 416-423