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Tides on Lava Worlds: Application to Close-in Exoplanets and the Early Earth–Moon System [PDF]
The Astrophysical JournalUnderstanding the physics of planetary magma oceans has been the subject of growing efforts, in light of the increasing abundance of solar system samples and extrasolar surveys.
Mohammad Farhat +4 more
doaj +6 more sources
Exploring exoplanet dynamics with JWST: Tides, rotation, rings, and moons. [PDF]
Proc Natl Acad Sci U S AAlthough nearly 6,000 exoplanets are currently known, in most cases, our knowledge is limited to a handful of the planet’s orbital characteristics and bulk properties such as radius and mass. The James Webb Space Telescope (JWST) can expand our knowledge not only by probing exoplanet atmospheres but also by measuring additional orbital and physical ...
Millholland SC, Winn JN.
europepmc +7 more sources
Tidal Venuses: triggering a climate catastrophe via tidal heating. [PDF]
Astrobiology, 2013 Traditionally stellar radiation has been the only heat source considered capable of determining global climate on long timescales. Here we show that terrestrial exoplanets orbiting low-mass stars may be tidally heated at high enough levels to induce a ...
Barnes R +5 more
europepmc +2 more sources
Tidal Dissipation Regimes among the Short-period Exoplanets
The Astrophysical Journal Letters, 2023 The efficiency of tidal dissipation provides a zeroth-order link to a planet’s physical properties. For super-Earth and sub-Neptune planets in the range R _⊕ ≲ R _p ≲ 4 R _⊕ , particularly efficient dissipation (i.e., low tidal quality factors) may ...
Emma M. Louden +2 more
doaj +1 more source
Tidal Quality of the Hot Jupiter WASP-12b
Universe, 2022 WASP-12b stands out among the planets of its class of hot Jupiters because of the observed fast orbital decay attributed to tidal dissipation. The measured rate of the orbital period change is P⋅orb=−29±3ms/yr= −(9.2±1.0)×10−10s/s.
Michael Efroimsky, Valeri V. Makarov
doaj +1 more source
The Astronomical Journal, 2023 Moons orbiting exoplanets (“exomoons”) may hold clues about planet formation, migration, and habitability. In this work, we investigate the plausibility of exomoons orbiting the temperate ( T _eq = 294 K) giant ( R = 9.2 R _⊕ ) planet HIP 41378 f, which ...
Caleb K. Harada +23 more
doaj +1 more source
The Ability of Significant Tidal Stress to Initiate Plate Tectonics [PDF]
, 2019 Plate tectonics is a geophysical process currently unique to Earth, has an important role in regulating the Earth's climate, and may be better understood by identifying rocky planets outside our solar system with tectonic activity.
Triaud, Amaury H. M. J., Zanazzi, J. J.
core +2 more sources
Prospects for Cryovolcanic Activity on Cold Ocean Planets
The Astrophysical Journal, 2023 We have estimated total internal heating rates and depths to possible subsurface oceans for 17 planets that may be cold ocean planets, low-mass exoplanets with equilibrium surface temperatures and/or densities that are consistent with icy surfaces and a ...
Lynnae C. Quick +4 more
doaj +1 more source
Warm Saturns: On the Nature of Rings around Extrasolar Planets that Reside Inside the Ice Line [PDF]
, 2011 We discuss the nature of rings that may exist around extrasolar planets. Taking the general properties of rings around the gas giants in the Solar System, we infer the likely properties of rings around exoplanets that reside inside the ice line.
Barnes +28 more
core +2 more sources
CoRoT-7 b: Super-Earth or Super-Io? [PDF]
, 2009 CoRoT-7 b, a planet about 70% larger than the Earth orbiting a Sun-like star, is the first-discovered rocky exoplanet, and hence has been dubbed a "super-Earth".
Barnes +19 more
core +4 more sources