77 citations · 845 across the 37 of their papers we have counts for
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Gas Phase Chemistry of Cool Exoplanet Atmospheres: Insight from Laboratory Simulations
Chao He, Sarah M. Hörst, Nikole K. Lewis +6
Photochemistry induced by stellar UV flux should produce haze particles in exoplanet atmospheres. Recent observations indicate that haze and/or cloud layers exist in the atmosphere…
Limits on Clouds and Hazes for the TRAPPIST-1 Planets
Sarah E. Moran, Sarah M. Hörst, Natasha E. Batalha +2
The TRAPPIST-1 planetary system is an excellent candidate for study of the evolution and habitability of M-dwarf planets. Transmission spectroscopy observations performed with the…
Where does Titan Sand Come From: Insight from Mechanical Properties of Titan Sand Candidates
Xinting Yu, Sarah M. Hörst, Chao He +2
Extensive equatorial linear dunes exist on Titan, but the origin of the sand, which appears to be organic, is unknown. We used nanoindentation to study the mechanical properties of…
Photochemical Haze Formation in the Atmospheres of super-Earths and mini-Neptunes
Chao He, Sarah M. Horst, Nikole K. Lewis +8
UV radiation can induce photochemical processes in exoplanet atmospheres and produce haze particles. Recent observations suggest that haze and/or cloud layers could be present in t…
Exploring the Atmosphere of Neoproterozoic Earth: The Effect of O on Haze Formation and Composition
Sarah M. Hörst, Chao He, Melissa S. Ugelow +3
Previous studies of haze formation in the atmosphere of the Early Earth have focused on N/CO/CH atmospheres. Here, we experimentally investigate the effect of O$_…
Laboratory Simulations of Haze Formation in the Atmospheres of super-Earths and mini-Neptunes: Particle Color and Size Distribution
Chao He, Sarah M. Horst, Nikole K. Lewis +7
Super-Earths and mini-Neptunes are the most abundant types of planets among the ~3500 confirmed exoplanets, and are expected to exhibit a wide variety of atmospheric compositions.…