Atmospheric Escape and the Evolution of Close-In Exoplanets [PDF]
Annual Review of Earth and Planetary Sciences, 2018 Exoplanets with substantial hydrogen/helium atmospheres have been discovered in abundance, many residing extremely close to their parent stars. The extreme irradiation levels that these atmospheres experience cause them to undergo hydrodynamic atmospheric escape.
James E. Owen
semanticscholar +8 more sources
Signatures of Atmospheric Mass Loss and Planet Migration in the Time Evolution of Short-Period Transiting Exoplanets [PDF]
The Astronomical JournalAbstract Comparative studies of young and old exoplanet populations offer a glimpse into how planets may form and evolve with time. We present an occurrence rate study of short-period (<12 days) planets between 1.8 and 10 R ⊕ around 1374 FGK stars in nearby (200 pc) young clusters (<1 Gyr), utilizing data from the
Rachel B. Fernandes +21 more
semanticscholar +8 more sources
The Evolution of Atmospheric Escape of Highly Irradiated Gassy Exoplanets [PDF]
Proceedings of the International Astronomical Union, 2021 AbstractAtmospheric escape has traditionally been observed using hydrogen Lyman-α transits, but more recent detections utilise the metastable helium triplet lines at 1083nm. Capable of being observed from the ground, this helium signature offers new possibilities for studying atmospheric escape.
Andrew Allan +2 more
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Exoplanet atmosphere evolution: emulation with neural networks [PDF]
Monthly Notices of the Royal Astronomical Society, 2023 ABSTRACT Atmospheric mass-loss is known to play a leading role in sculpting the demographics of small, close-in exoplanets. Knowledge of how such planets evolve allows one to ‘rewind the clock’ to infer the conditions in which they formed.
James G Rogers +3 more
openaire +5 more sources
Haze evolution in temperate exoplanet atmospheres through surface energy measurements [PDF]
Nature Astronomy, 2021 6 figures, 2 tables, 23 ...
Xinting Yu +15 more
openaire +7 more sources
On the relative importance of AGN winds for the evolution of exoplanet atmospheres [PDF]
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT Recent work investigating the impact of winds and outflows from active galactic nuclei (AGNs) on the habitability of exoplanets suggests that such activity could be deleterious for the long-term survival of planetary atmospheres and the habitability of planets subject to such winds.
S. Heinz
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The Atmospheric Evolution of Small, Close-In Exoplanets
, 2022 Submitted in part fulfilment of the requirements for the degree of Doctor of Philosophy at Imperial College London, July 2022.
James G. Rogers
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The role of planetary interior in the long-term evolution of atmospheric CO2on Earth-like exoplanets [PDF]
Astronomy & Astrophysics, 2021 Context.The long-term carbonate silicate cycle plays an important role in the evolution of Earth’s climate and, therefore, may also be an important mechanism in the evolution of the climates of Earth-like exoplanets. However, given the large diversity in the possible interiors for Earth-like exoplanets, the ensuing evolution of the atmospheric ...
Mark Oosterloo +3 more
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Spin evolution of Earth-sized exoplanets, including atmospheric tides and core–mantle friction [PDF]
International Journal of Astrobiology, 2014 AbstractPlanets with masses between 0.1 and 10 M⊕are believed to host dense atmospheres. These atmospheres can play an important role on the planet's spin evolution, since thermal atmospheric tides, driven by the host star, may counterbalance gravitational tides. In this work, we study the long-term spin evolution of Earth-sized exoplanets.
D. Cunha, A. C. M. Correia, J. Laskar
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A Coupled Analysis of Atmospheric Mass Loss and Tidal Evolution in XUV Irradiated Exoplanets: The TRAPPIST-1 Case Study [PDF]
The Astronomical Journal, 2020 Abstract Exoplanets residing close to their stars can experience evolution of both their physical structures and their orbits due to the influence of their host stars. In this work, we present a coupled analysis of dynamical tidal dissipation and atmospheric mass loss for exoplanets in X-ray and ultraviolet (XUV) irradiated environments.
Juliette Becker +4 more
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