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JWST/NIRCam Coronagraphy of the Young Planet-hosting Debris Disk AU Microscopii
Kellen Lawson, Joshua E. Schlieder, Jarron M. Leisenring +20
High-contrast imaging of debris disk systems permits us to assess the composition and size distribution of circumstellar dust, to probe recent dynamical histories, and to directly…
Thermal emission from the Earth-sized exoplanet TRAPPIST-1 b using JWST
Thomas P. Greene, Taylor J. Bell, Elsa Ducrot +3
The TRAPPIST-1 system is remarkable for its seven planets that are similar in size, mass, density, and stellar heating to the rocky planets Venus, Earth, and Mars in our own Solar…
Spectroscopic Time-series Performance of JWST/NIRSpec from Commissioning Observations
Néstor Espinoza, Leonardo Úbeda, Stephan M. Birkmann +22
We report on JWST commissioning observations of the transiting exoplanet HAT-P-14 b, obtained using the Bright Object Time Series (BOTS) mode of the NIRSpec instrument with the G39…
A Mirage or an Oasis? Water Vapor in the Atmosphere of the Warm Neptune TOI-674 b
Jonathan Brande, Ian J. M. Crossfield, Laura Kreidberg +14
We report observations of the recently discovered warm Neptune TOI-674 b (5.25 \rearth{}, 23.6 \mearth{}) with the Hubble Space Telescope's Wide Field Camera 3 instrument. TOI-674…
Detecting Biosignatures in the Atmospheres of Gas Dwarf Planets with the James Webb Space Telescope
Caprice Phillips, Ji Wang, Sarah Kendrew +5
Exoplanets with radii between those of Earth and Neptune have stronger surface gravity than Earth, and can retain a sizable hydrogen-dominated atmosphere. In contrast to gas giant…
Transmission spectroscopy for the warm sub-Neptune HD3167c: evidence for molecular absorption and a possible high metallicity atmosphere
Thomas Mikal-Evans, Ian J. M. Crossfield, Bjorn Benneke +26
We present a transmission spectrum for the warm (500-600K) sub-Neptune HD3167c obtained using the Hubble Space Telescope Wide Field Camera 3 infrared spectrograph. We combine these…