Results 41 to 50 of about 1,751 (120)
Europa’s H2O2: Temperature Insensitivity and a Correlation with CO2
The Planetary Science JournalH _2 O _2 is part of Europa’s water-ice radiolytic cycle and a potential source of oxidants to Europa’s subsurface ocean. However, factors controlling the concentration of this critical surface species remain unclear.
Peiyu Wu +3 more
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The Astrophysical Journal LettersSome sub-Neptune planets may host habitable conditions; for example “Hycean” worlds with H _2 envelopes over liquid water oceans can maintain potentially hospitable pressures and temperatures at their surface.
Michaela Leung +4 more
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Two-dimensional Models of Microphysical Clouds on Hot Jupiters. I. Cloud Properties
The Astrophysical JournalWe present a new two-dimensional, bin-scheme microphysical model of cloud formation in the atmospheres of hot Jupiters that includes the effects of longitudinal gas and cloud transport.
Diana Powell, Xi Zhang
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The Detection-versus-retrieval Challenge: Titan as an Exoplanet
The Astrophysical Journal LettersCassini observations of Titan’s atmosphere are exemplary benchmarks for exoplanet atmospheric studies owing to their precision, their spectral coverage, and our independent knowledge of Titan.
Prajwal Niraula +4 more
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The Resonant Remains of Broken Chains from Major and Minor Mergers
The Astronomical JournalTESS and Kepler have revealed that practically all close-in sub-Neptunes form in mean-motion resonant chains, most of which unravel on timescales of 100 Myr.
Rixin Li +3 more
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Strong Fractionation of Deuterium and Helium in Sub-Neptune Atmospheres along the Radius Valley
The Astrophysical JournalWe simulate atmospheric fractionation in escaping planetary atmospheres using IsoFATE , a new open-source numerical model. We expand the parameter space studied previously to planets with tenuous atmospheres that exhibit the greatest helium and deuterium
Collin Cherubim +3 more
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Differentiation, the Exception, Not the Rule: Evidence for Full Miscibility in Sub-Neptune Interiors
The Planetary Science JournalWe investigate the consequences of nonideal mixing between silicate, iron metal, and hydrogen for the structures of the cores of sub-Neptunes with implications for super-Earths and perhaps other planets formed by mixtures of silicate melt, iron metal ...
Edward D. Young +4 more
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Nightside Clouds on Tidally Locked Terrestrial Planets Mimic Atmosphere-free Scenarios
The Astrophysical Journal LettersWe investigate the impact of nightside cloud formation on the observable day/night contrast of tidally locked terrestrial planet atmospheres. We demonstrate that, in the case where the planetary dayside is only 10 s of Kelvin hotter than the planetary ...
Diana Powell +2 more
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Eccentricity Distribution beyond the Snow Line and Implications for Planetary Habitability
The Astrophysical Journal LettersA fundamental question in the study of planetary system demographics is: how common is the solar system architecture? The primary importance of this question lies in the potential of planetary systems to create habitable environments, and dissecting the ...
Stephen R. Kane, Robert A. Wittenmyer
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The Astronomical JournalThe detection and atmospheric characterization of potentially habitable, temperate terrestrial exoplanets using a space-based mid-infrared nulling interferometer is a major goal of contemporary astrophysics.
Philipp A. Huber +7 more
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