JWST NIRISS/SOSS data yield a transmission spectrum of the 23 Myr V1298 Tau c showing H2O absorption and an atmospheric metallicity of 14.8^{+56}_{-12} times solar, lower than mature planets of similar mass.
and Gillon, Micha
8 Pith papers cite this work, alongside 10 external citations. Polarity classification is still indexing.
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Joint speckle-atmosphere retrievals on JWST spectra of HD 19467 B and a field T dwarf detect H2O, CH4, CO, CO2 and NH3, yield carbon isotopic ratios of 154 and 85 respectively, and show near-solar metallicity with subsolar C/O.
JWST observations of four flares on TRAPPIST-1 reveal a persistent post-flare brightening, attributed to the disappearance of a dark magnetic surface feature, yielding the first measured spectrum of such a feature on an M8 dwarf.
TRAPPIST-1 has a Sun-like C/O ratio of 0.60, a carbon isotope ratio of 154, and an oxygen isotope ratio of 490, all measured for the first time from infrared spectra.
Bias-selected carrier transport in a GaAs/AlGaAs ratchet yields two complementary broadband infrared response functions in one detector, enabling common-path spatial and transient thermoradiometric recovery.
On a rotating Earth-like exoplanet, a large icy comet impact mostly deposits water low in the atmosphere and produces only small, hard-to-detect changes in spectra, unlike the strong signal predicted for tidally locked planets.
The FeHz gravity index in late-M dwarfs anti-correlates with metallicity at 3.3 sigma, while no robust link between gravity class and planet occurrence is found.
Back-to-back transits of TRAPPIST-1 b and c allow an observed, model-free correction of stellar contamination in planet c's spectrum, reducing structured noise 2.5x below 2 micrometers.
citing papers explorer
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KRONOS I: The $1{-}2.8\mu$m JWST Transmission Spectrum of the 23 Myr V1298 Tau c
JWST NIRISS/SOSS data yield a transmission spectrum of the 23 Myr V1298 Tau c showing H2O absorption and an atmospheric metallicity of 14.8^{+56}_{-12} times solar, lower than mature planets of similar mass.
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JWST high-contrast spectroscopy with speckle modelling: Atmospheric retrievals of the T dwarf companion HD 19467 B
Joint speckle-atmosphere retrievals on JWST spectra of HD 19467 B and a field T dwarf detect H2O, CH4, CO, CO2 and NH3, yield carbon isotopic ratios of 154 and 85 respectively, and show near-solar metallicity with subsolar C/O.