JWST NIRSpec observations of LTT 1445 A b yield a featureless 3-5μm transmission spectrum, limiting atmospheric metallicity to ≳350× solar under grey-cloud models.
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Hydrolyzed haze analogs from water-rich exoplanet conditions show higher absorptivity and a high imaginary refractive index that flattens spectral features in atmospheric models.
Hycean models with a 1-bar H2 envelope, percent-level CH4 and CO, and CO2 at 10^-3 to 10^-2 reproduce the 0.8-5.2 μm JWST spectra of K2-18b.
Tholins formed at 0.125 torr have threefold lower production rate but higher density and nanoindentation hardness than those at 1 torr, while particle size, morphology, surface energy, and Young's modulus remain similar.
citing papers explorer
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JWST COMPASS Program: The 3--5$\mu$m transmission spectrum of LTT 1445 A b
JWST NIRSpec observations of LTT 1445 A b yield a featureless 3-5μm transmission spectrum, limiting atmospheric metallicity to ≳350× solar under grey-cloud models.
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Hydrolyzed Hazes on Water-rich Exoplanets: Optical Constants and Detectability
Hydrolyzed haze analogs from water-rich exoplanet conditions show higher absorptivity and a high imaginary refractive index that flattens spectral features in atmospheric models.
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A Hycean Interpretation of K2-18b Supported by Photochemical Atmospheric Compositional
Hycean models with a 1-bar H2 envelope, percent-level CH4 and CO, and CO2 at 10^-3 to 10^-2 reproduce the 0.8-5.2 μm JWST spectra of K2-18b.
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Feeling the Pressure: Effects of Formation Pressure on the Physical Properties of Titan Haze Analogs
Tholins formed at 0.125 torr have threefold lower production rate but higher density and nanoindentation hardness than those at 1 torr, while particle size, morphology, surface energy, and Young's modulus remain similar.