Results 11 to 20 of about 13,254 (205)

A Geologic Si‐O‐C Pathway to Incorporate Carbon in Silicates

open access: yesGeophysical Monograph Series, Page 47-54., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Alexandra Navrotsky   +2 more
wiley  

+2 more sources

Experimental Investigation of the Photochemical Production of Hydrocarbons in Warm Gas Giant Exoplanet Atmospheres

open access: yesThe Astrophysical Journal, 2023
In warm (equilibrium temperature
Benjamin Fleury   +5 more
doaj   +1 more source

Atmospheres of rocky exoplanets

open access: yesAnnual 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.
openaire   +5 more sources

Nonthermal Atmospheric Escape on the Kepler-11 “Super-Earths” Driven by Stellar Wind Sputtering

open access: yesThe 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
doaj   +1 more source

The Runaway Greenhouse on Sub-Neptune Waterworlds

open access: yesThe 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
doaj   +1 more source

A JWST NIRSpec Phase Curve for WASP-121b: Dayside Emission Strongest Eastward of the Substellar Point and Nightside Conditions Conducive to Cloud Formation

open access: yesThe 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
doaj   +1 more source

Hα Absorption in Transiting Exoplanet Atmospheres [PDF]

open access: yesProceedings 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
openaire   +3 more sources

Exoplanet Atmospheres and Photochemistry [PDF]

open access: yesProceedings 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
openaire   +2 more sources

Exoplanet atmospheres [PDF]

open access: yesPhysics Today, 2013
Twenty years ago planets orbiting faraway stars were the stuff of science fiction. Now their atmospheric composition and even their weather are being revealed by sensitive spectral measurements.
openaire   +2 more sources

A Multiple Scattering Polarized Radiative Transfer Model: Application to HD 189733b [PDF]

open access: yes, 2015
We present a multiple scattering vector radiative transfer model which produces disk integrated, full phase polarized light curves for reflected light from an exoplanetary atmosphere.
Kopparla, Pushkar   +5 more
core   +2 more sources

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