Results 81 to 90 of about 9,753 (162)
Exoplanet Aeronomy: A Case Study of WASP-69 b’s Variable Thermosphere
The Astronomical JournalAeronomy, the study of Earth’s upper atmosphere and its interaction with the local space environment, has long traced changes in the thermospheres of Earth and other solar system planets to solar variability in the X-ray and extreme-ultraviolet ...
W. Garrett Levine +7 more
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Blowin’ in the Nonisothermal Wind: Core-powered Mass Loss with Hydrodynamic Radiative Transfer
The Astrophysical JournalThe mass loss rates of planets undergoing core-powered escape are usually modeled using an isothermal Parker-type wind at the equilibrium temperature, T _eq .
William Misener +3 more
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Numerical Performance of Correlated-k Distribution Method in Atmospheric Escape Simulation
The Astrophysical JournalAtmospheric escape is crucial to understanding the evolution of planets in and out of the solar system and to interpreting atmospheric observations. While hydrodynamic escape simulations have been actively developed incorporating detailed processes such ...
Yuichi Ito +2 more
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Atmospheric Escape and the Evolution of Close-In Exoplanets [PDF]
, 2018 James E. Owen
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The Astrophysical JournalExoplanets with short orbit periods reside very close to their host stars. They transition very rapidly between different sectors of the circumstellar space environment along their orbit, leading to large variations of the magnetic field in the vicinity ...
Ofer Cohen +6 more
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Atmospheric mass-loss and evolution of short-period exoplanets: the examples of CoRoT-7b and Kepler-10b [PDF]
, 2013 Hiroyuki Kurokawa, Lisa Kaltenegger
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The Astronomical JournalAtmospheric mass loss is thought to induce the bimodality in the small planet population as we observe it today. Observationally, active mass loss can be traced by excess absorption in spectral lines of lighter species, such as the hydrogen Ly α line and
Ava Morrissey +8 more
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An Oxidation Gradient Straddling the Small Planet Radius Valley
The Astrophysical JournalWe present a population-level view of volatile gas species (H _2 , He, H _2 O, O _2 , CO, CO _2 , CH _4 ) distribution during the sub-Neptune to rocky planet transition, revealing in detail the dynamic nature of small planet atmospheric compositions. Our
Collin Cherubim +5 more
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Effects of Ultraviolet Radiation on Sub-Neptune Exoplanet Hazes through Laboratory Experiments
The Planetary Science JournalTemperate sub-Neptune exoplanets could contain large inventories of water in various phases, such as water worlds with water-rich atmospheres or even oceans.
Lori Huseby +11 more
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A Large and Variable Leading Tail of Helium in a Hot Saturn Undergoing Runaway Inflation
The Astronomical JournalAtmospheric escape shapes the fate of exoplanets, with statistical evidence for transformative mass loss imprinted across the mass–radius–insolation distribution.
Michael Gully-Santiago +16 more
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