Results 11 to 20 of about 14,250 (228)
Observations of Exoplanet Atmospheres [PDF]
Publications of the Astronomical Society of the Pacific, 2015 Detailed characterization of an extrasolar planet's atmosphere provides the best hope for distinguishing the makeup of its outer layers, and the only hope for understanding the interplay between initial composition, chemistry, dynamics & circulation, and disequilibrium processes.
Crossfield, Ian J. M.
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ExoGemS Detection of a Metal Hydride in an Exoplanet Atmosphere at High Spectral Resolution
The Astrophysical Journal Letters, 2023 Exoplanet atmosphere studies are often enriched by synergies with brown dwarf analogs. However, many key molecules commonly seen in brown dwarfs have yet to be confirmed in exoplanet atmospheres.
Laura Flagg +9 more
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The Astrophysical Journal, 2023 In warm (equilibrium temperature
Benjamin Fleury +5 more
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Atmospheres of rocky exoplanets
Annual Review of Astronomy and Astrophysics, 2022 The increasing number of known rocky exoplanets motivates investigations of the diversity of atmospheric and surface composition of these planets. We investigate the link between the composition of the surface, near-crust atmosphere and the lower atmosphere, including the presence of different cloud condensates.
Wordsworth, R., Kreidberg, L.
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Nonthermal Atmospheric Escape on the Kepler-11 “Super-Earths” Driven by Stellar Wind Sputtering
The Astrophysical Journal, 2023 Jeans escape or hydrodynamic escape is believed to dominate atmospheric loss for hot Jupiters. However, nonthermal mechanisms likely contribute substantially on hydrogen-rich “super-Earths” with relatively cold and extended atmospheres.
Hao Gu +4 more
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The Runaway Greenhouse on Sub-Neptune Waterworlds
The Astrophysical Journal, 2023 The implications of the water vapor runaway greenhouse phenomenon for water-rich sub-Neptunes are developed. In particular, the nature of the postrunaway equilibration process for planets that have an extremely high water inventory is addressed. Crossing
Raymond T. Pierrehumbert
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Hα Absorption in Transiting Exoplanet Atmospheres [PDF]
Proceedings of the International Astronomical Union, 2013 AbstractRecent observations by Jensen et al. of Hα absorption by the upper atmosphere of HD189733b have motivated the need for a theoretical understanding of the distribution of n=2 hydrogen within hot Jupiter atmospheres. With this in mind, we model the n=2 state of atomic hydrogen in a hydrostatic atmosphere in thermal and photoionization equilibrium.
Christie, Duncan +2 more
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The Astrophysical Journal, 2023 The near-infrared transmission spectrum of the warm sub-Neptune exoplanet GJ 1214 b has been observed to be flat and featureless, implying a high metallicity atmosphere with abundant aerosols.
Peter Gao +14 more
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The Astrophysical Journal Letters, 2023 We present the first exoplanet phase-curve measurement made with the JWST NIRSpec instrument, highlighting the exceptional stability of this newly commissioned observatory for exoplanet climate studies.
Thomas Mikal-Evans +12 more
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Exoplanet Atmospheres and Photochemistry [PDF]
Proceedings of the International Astronomical Union, 2005 Over 150 extrasolar planets are known to orbit sun-like stars. A growing number of them (9 to date) are transiting “hot Jupiters” whose physical characteristics can be measured. Atmospheres of two of these planets have already been detected. We summarize the atmosphere detections and useful upper limits, focusing on the MOST albedo upper limit and II ...
Seager, S. +3 more
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