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
Millholland SC, Winn JN.
europepmc +4 more sources
Secular orbital dynamics of the innermost exoplanet of the $$\upsilon $$-Andromedæ system [PDF]
Celestial Mechanics and Dynamical Astronomy, 2023 We introduce a quasi-periodic restricted Hamiltonian to describe the secular motion of a small-mass planet in a multi-planetary system. In particular, we refer to the motion of $$\upsilon $$ υ -And $$\textbf{b}$$ b which is the innermost planet among ...
Rita Mastroianni, Ugo Locatelli
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Analogous response of temperate terrestrial exoplanets and Earth's climate dynamics to greenhouse gas supplement. [PDF]
Sci Rep, 2023 Humanity is close to characterizing the atmospheres of rocky exoplanets due to the advent of JWST. These astronomical observations motivate us to understand exoplanetary atmospheres to constrain habitability.
Hochman A, Komacek TD, De Luca P.
europepmc +7 more sources
Convective dynamics in mantle of tidally-locked exoplanets. [PDF]
Nat CommunAbstract Tidal locking imposes distinctive thermal forcing on super-Earth exoplanets in habitable zones, i.e., permanent stellar flux forces extraordinary day-night temperature contrast. However, it may be premature to conclude that life is absent in such supposedly harsh environments—flaming hot on dayside and freezing cold on nightside—when
Noto D +4 more
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The impact of Ozone on Earth-like exoplanet climate dynamics: the case of Proxima Centauri b [PDF]
Monthly notices of the Royal Astronomical SocietyThe emergence of the James Webb Space Telescope and the development of other advanced observatories (e.g. ELTs, LIFE and HWO) marks a pivotal moment in the quest to characterize the atmospheres of Earth-like exoplanets. Motivated by these advancements,
Paolo De Luca +3 more
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Dynamics of Colombo’s Top: Generating Exoplanet Obliquities from Planet–Disk Interactions [PDF]
Astrophysical Journal, 2020 Large planetary spin–orbit misalignments (obliquities) may strongly influence atmospheric circulation and tidal heating in a planet. A promising avenue to generate obliquities is via spin–orbit resonances, where the spin and orbital precession ...
Yubo Su, Dong Lai
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Ab Initio Quantum Dynamics as a Scalable Solution to the Exoplanet Opacity Challenge: A Case Study of CO2 in a Hydrogen Atmosphere [PDF]
Astrophysical JournalLight–matter interactions lie at the heart of our exploration of exoplanetary atmospheres. Interpreting data obtained by remote sensing is enabled by meticulous, time- and resource-consuming work aiming at deepening our understanding of such interactions
L. Wiesenfeld +5 more
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The influence of coronal mass ejections on the gas dynamics of the atmosphere of a “hot Jupiter” exoplanet [PDF]
Astronomy reports (Print), 2016 The results of three-dimensional numerical simulations of the gas dynamics of the atmosphere of a “hot Jupiter” exoplanet during the passage of a coronal mass ejection (CME) from the central star are presented.
Д. В. Бисикало +1 more
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Proceedings of the National Academy of Sciences of the United States of America, 2023 Significance Using a fully coupled, three-dimensional atmospheric chemistry-radiation-dynamics model, we demonstrate that the atmospheric composition of terrestrial exoplanets can be self-oscillatory under nonvarying external forcings. This finding could
Yangcheng Luo +4 more
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Sporadic Spin-orbit Variations in Compact Multiplanet Systems and Their Influence on Exoplanet Climate [PDF]
Astrophysical Journal Letters, 2023 Climate modeling has shown that tidally influenced terrestrial exoplanets, particularly those orbiting M-dwarfs, have unique atmospheric dynamics and surface conditions that may enhance their likelihood to host viable habitats.
Howard Chen +3 more
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