Results 101 to 110 of about 15,445 (215)
Most High-density Exoplanets Are Unlikely to Be Remnant Giant Planet's Cores
The Astrophysical Journal LettersSome exoplanets have much higher densities than expected from stellar abundances of planet-forming elements. There are two theories—metal-rich formation hypothesis and naked core hypothesis—that explain how formation and evolution can alter the ...
Zifan Lin, Saverio Cambioni, Sara Seager
doaj +1 more source
CoRoT pictures transiting exoplanets
, 2015 The detection and characterization of exoplanets have made huge progresses since the first discoveries in the late nineties. In particular, the independent measurement of the mass and radius of planets, by combining the transit and radial-velociy ...
Deleuil, Magali, Moutou, Claire
core +3 more sources
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
APPLE: An Evolution Code for Modeling Giant Planets
The Astrophysical JournalWe introduce APPLE , a novel planetary evolution code designed specifically for the study of giant exoplanet and Jovian planet evolution in the era of Galileo, Juno, and Cassini. With APPLE , state-of-the-art equations of state for hydrogen, helium, ice,
Ankan Sur +4 more
doaj +1 more source
Observing transiting planets with JWST -- Prime targets and their synthetic spectral observations
, 2016 The James Webb Space Telescope will enable astronomers to obtain exoplanet spectra of unprecedented precision. Especially the MIRI instrument may shed light on the nature of the cloud particles obscuring planetary transmission spectra in the optical and ...
Bouwman, Jeroen +5 more
core +1 more source
Interior and Climate Modeling of the Venus Zone Planet TOI-2285 b
The Astronomical JournalAs the discovery of exoplanets progresses at a rapid pace, the large number of known planets provides a pathway to assess the stellar and planetary properties that govern the climate evolution of terrestrial planets.
Emma L. Miles +7 more
doaj +1 more source
Not All Sub-Neptune Exoplanets Have Magma Oceans
The Astrophysical Journal LettersThe evolution and structure of sub-Neptunes may be strongly influenced by interactions between the outer gaseous envelope of the planet and a surface magma ocean.
Bodie Breza +2 more
doaj +1 more source
Surrogate-accelerated Bayesian Inversion for Exoplanet Interior Characterization
The Astrophysical JournalCharacterizing the interior structure of exoplanets is an inverse problem often solved using Bayesian inference, but this approach is hampered by the high computational cost of planetary structure models.
Tijn de Wringer +3 more
doaj +1 more source
The Astrophysical JournalDue to the unprecedented signal strengths offered by the newest high-resolution spectrographs on 10 m class telescopes, exploring the 3D nature of exoplanets is possible with an unprecedented level of precision.
Aurora Y. Kesseli +3 more
doaj +1 more source
The Astrophysical Journal LettersWe present the transmission spectrum of the original transiting hot Jupiter HD 209458b from 2.3 to 5.1 μ m as observed with the NIRCam instrument on the James Webb Space Telescope (JWST). Previous studies of HD 209458b’s atmosphere have given conflicting
Qiao Xue +5 more
doaj +1 more source