Results 41 to 50 of about 193,103 (196)
The Astronomical Journal, 2023 Extremely low-density exoplanets are tantalizing targets for atmospheric characterization because of their promisingly large signals in transmission spectroscopy.
Aaron Bello-Arufe +8 more
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Atmospheric Dynamics of a Near Tidally Locked Earth-Size Planet [PDF]
, 2022 The discovery and characterization of Earth-sized planets that are in, or near, a tidally-locked state are of crucial importance to understanding terrestrial planet evolution, and for which Venus is a clear analog. Exoplanetary science lies at the threshold of characterizing hundreds of terrestrial planetary atmospheres, thereby providing a statistical
arxiv +1 more source
Towards a Theory for the Atmospheres, Structure, and Evolution of Giant Exoplanets [PDF]
Proceedings of the International Astronomical Union, 2011 AbstractIn this short review, I summarize some of the salient features of the emerging theory of exoplanets in general, and of giant exoplanets in particular. A focus is on the characterization of transiting planets at primary and secondary eclipse, but various other related topics are covered, if only briefly.
openaire +2 more sources
Evolution of a Water-rich Atmosphere Formed by a Giant Impact on an Earth-sized Planet
The Astrophysical Journal, 2023 The atmosphere of a terrestrial planet that is replenished with secondary gases should have accumulated hydrogen-rich gas from its protoplanetary disk.
Kenji Kurosaki +3 more
doaj +1 more source
Unveiling the atmospheric evolution of exoplanets
, 2021 A thorough characterisation of an exoplanetary system includes also studying the evolution of planetary atmospheres. To this end, we developed a custom tool to estimate the atmospheric content of exoplanets at the dispersal of the protoplanetary disk accounting for the present day system observables. In detail, our tool relies on planetary evolutionary
openaire +1 more source
TOI-1695 b: A Water World Orbiting an Early-M Dwarf in the Planet Radius Valley
The Astronomical Journal, 2023 Characterizing the bulk compositions of transiting exoplanets within the M dwarf radius valley offers a unique means to establish whether the radius valley emerges from an atmospheric mass-loss process or is imprinted by planet formation itself.
Collin Cherubim +41 more
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The Inhomogeneity Effect. II. Rotational and Orbital States Impact Planetary Cooling
The Astrophysical Journal, 2023 We generalize the theory of the inhomogeneity effect to enable comparison among different inhomogeneous planets. A metric of inhomogeneity based on the cumulative distribution function is applied to investigate the dependence of planetary cooling on ...
Xi Zhang
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The Inhomogeneity Effect. I. Inhomogeneous Surface and Atmosphere Accelerate Planetary Cooling
The Astrophysical Journal, 2023 We propose a general principle that under radiative-convective equilibrium, the spatial and temporal variations in a planet’s surface and atmosphere tend to increase its cooling.
Xi Zhang
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Fleeting but Not Forgotten: The Imprint of Escaping Hydrogen Atmospheres on Super-Earth Interiors
The Astrophysical JournalSmall, close-in exoplanets are divided into two subpopulations: super-Earths and sub-Neptunes. Most super-Earths are thought to have lost their primordially accreted hydrogen-dominated atmospheres via thermally driven winds.
James G. Rogers +2 more
doaj +1 more source
TOI-1075 b: A Dense, Massive, Ultra-short-period Hot Super-Earth Straddling the Radius Gap
The Astronomical Journal, 2023 Populating the exoplanet mass–radius diagram in order to identify the underlying relationship that governs planet composition is driving an interdisciplinary effort within the exoplanet community.
Zahra Essack +31 more
doaj +1 more source