Panchromatic JWST spectrum of WASP-121 b detects SiO and measures refractory-to-volatile ratios 3x stellar, consistent with mixed solid-gas accretion or migration with continued solid accretion.
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JWST observations yield upper limits on CH4 and CO partial pressures in 2002 XV93 of (3-10)×10^{-6} and (50-300)×10^{-6} nbar, well below the 100-200 nbar from occultation.
citing papers explorer
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The panchromatic JWST dayside spectrum of WASP-121 b reveals a refractory-rich formation
Panchromatic JWST spectrum of WASP-121 b detects SiO and measures refractory-to-volatile ratios 3x stellar, consistent with mixed solid-gas accretion or migration with continued solid accretion.
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Constraints on the Atmospheric Composition of 2002 XV$_{93}$ from JWST Spectroscopy
JWST observations yield upper limits on CH4 and CO partial pressures in 2002 XV93 of (3-10)×10^{-6} and (50-300)×10^{-6} nbar, well below the 100-200 nbar from occultation.