Results 111 to 120 of about 3,219 (219)
Spectra as windows into exoplanet atmospheres [PDF]
, 2014 Understanding a planet’s atmosphere is a necessary condition for understanding not only the planet itself, but also its formation, structure, evolution, and habitability.
Burrows, Adam S.
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The Radius Cliff is a Waterfall: Explaining Sub-Neptune Exoplanets with Steam Worlds
The Astrophysical JournalThe demographics of Kepler planets provide a key testbed for models of planet formation and evolution, particularly for explaining the radius valley separating super-Earths and sub-Neptunes.
Aritra Chakrabarty +3 more
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The Astrophysical JournalThe Kepler-observed distribution of planet sizes has revealed two distinct patterns: (1) a radius valley separating super-Earths and sub-Neptunes and (2) a preference for intrasystem size similarity.
Matthias Y. He, Eric B. Ford
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Cloud formation in 3D exoplanet atmospheres
As result of formation and evolution processes, exoplanets can have very different properties, e.g. giant gas planets, rocky planets, mini-neptunes and possibly carbon-rich planets. The understanding of these objects is, to a large extent, hampered by clouds obscuring their atmospheres. Clouds play a key role for the atmospheric dynamics and chemistry,
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The Astrophysical JournalExoplanet mass and radius inferences fundamentally rely on host star mass and radius inferences. Despite the importance of host star mass, radius, and elemental abundance inferences for the derivation of exoplanet internal structure constraints ...
Alejandra Ross +4 more
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The discovery of exoplanets: towards understanding planet formation
Rendiconti Lincei. Scienze Fisiche e NaturaliAbstract The discovery of exoplanets has opened a new, very rich field in modern astronomy, allowing a much better insight into the characteristics of planets and the mechanisms for their formation than possible from only the observation of the Solar System.
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The case for a rectangular format space telescope for finding exoplanets
Frontiers in Astronomy and Space SciencesWe suggest that rectangular primary-mirror telescopes provide a clearer path to discovering habitable worlds than other designs currently being pursued. We show that a simple infrared (λ∼10 μm) telescope design with a rectangular mirror 20 m in length and 1 m in width, combined with technology already developed for JWST, can discover ∼11 habitable ...
Heidi Jo Newberg +6 more
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On the interaction between embedded planets and the corotation region of protoplanetary discs [PDF]
, 2015 PhDDisc material in the corotation region librates with respect to low-mass planets on horseshoe trajectories. The exchange of angular momentum associated with this libration gives rise to the non-linear corotation torque (the horseshoe drag).
Fendyke, Stephen
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The Astrophysical Journal LettersUnderstanding the planetary envelope composition of sub-Neptune-type exoplanets is challenging due to the inherent degeneracy in their interior composition scenarios.
Jeehyun Yang, Renyu Hu
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The Astronomical JournalIt has been suggested that β Pic b has a supersolar metallicity and subsolar C/O ratio. Assuming solar carbon and oxygen abundances for the star β Pic and therefore the planet’s parent protoplanetary disk, β Pic b’s C/O ratio suggests that it formed via ...
Henrique Reggiani +7 more
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