Results 71 to 80 of about 1,575 (209)
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
TRIDENT:a rapid 3D radiative-transfer model for exoplanet transmission spectra
, 2022 Transmission spectroscopy is one of the premier methods used to probe the temperature, composition, and cloud properties of exoplanet atmospheres.
Lewis, Nikole K., MacDonald, Ryan J.
core +1 more source
Impacts of Carbon Dioxide Deposition on Martian Near‐Surface Wave Activity
Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.Abstract A prominent feature of Mars' winter atmosphere is near‐surface baroclinic wave activity. These waves exert strong control on dust storm variability and contribute to transport of heat, momentum, and dust. Using a suite of Mars general circulation model simulations, we investigate an underexplored connection between near‐surface wave activity ...
Hung Kwan Fok +2 more
wiley +1 more source
The Astrophysical JournalA primary goal of characterizing exoplanet atmospheres is to constrain planetary bulk properties, such as their metallicity, C/O ratio, and intrinsic heat.
Sagnick Mukherjee +4 more
doaj +1 more source
Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.Abstract Xenon (Xe) is a heavy noble gas with intriguing chemical properties, such as having several stable isotopes and the ability to form compounds under extreme conditions. Despite the predictions based on cosmochemical models that suggest xenon should be relatively abundant in planetary reservoirs, empirical data indicate a significant depletion ...
Avinash Kumar Both +2 more
wiley +1 more source
Clouds and Hazes in GJ 1214 b’s Metal-rich Atmosphere
The Astronomical JournalThe sub-Neptune GJ 1214 b has an infamously flat transmission spectrum, likely due to thick aerosols in its atmosphere. A recent JWST/MIRI spectroscopic phase curve of GJ 1214 b added to this picture, suggesting a highly reflective and metal-rich ...
Isaac Malsky +12 more
doaj +1 more source
Exploring cycad foliage as an archive of the isotopic composition of atmospheric nitrogen [PDF]
, 2019 Funding for this work was provided by a University of Washington Royalty Research Fund Grant (R.B.), National Science Foundation Graduate Research Fellowship DGE‐1256082 (M.A.K.), and German Research Foundation (DFG) Fellowship GE2558/3‐1 (M.M.G ...
Forster, Paul I. +15 more
core +1 more source
Modeling Wind‐Driven Waves on Other Planets: Applications to Mars, Titan, and Exoplanets
Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.Abstract Waves could exist on any planet with sustained winds and stable surface liquids. However, differences in atmospheres, liquids, and gravity confound efforts to extend Earth‐based empirical wave models to other planetary environments. We adapted a physics‐based numerical wave model to study how planetary conditions affect the growth of waves. We
Una G. Schneck +5 more
wiley +1 more source
Impacting Atmospheres: How Late-stage Pollution Alters Exoplanet Composition
The Astrophysical JournalAbstract The atmospheric composition of exoplanets is often considered as a probe of the planet’s formation conditions. How exactly the initial chemical memory may be altered from the birth to the final state of the planet, however, remains unknown.
Emilia Vlahos +3 more
openaire +3 more sources
The Astronomical JournalAlthough Neptunian-sized (2–5 R _⊕ ) planets appear to be extremely common in the Galaxy, many mysteries remain about their overall nature. To date, only 11 Neptunian-sized planets have had their atmospheres spectroscopically characterized, and these ...
Matthew M. Murphy +3 more
doaj +1 more source