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Hints of a sulfur-rich atmosphere around the 1.6 R Super-Earth L98-59 d from JWST NIRSpec G395H transmission spectroscopy
Amélie Gressier, Néstor Espinoza, Natalie H. Allen +11
Detecting atmospheres around planets with a radius below 1.6 R, commonly referred to as rocky planets (Rogers_2015, Rogers_2021), has proven to be challenging. However,…
Atmospheric retrievals suggest the presence of a secondary atmosphere and possible sulfur species on L 98-59 d from JWST NIRSpec G395H transmission spectroscopy
Agnibha Banerjee, Joanna K. Barstow, Amélie Gressier +10
L 98-59 d is a Super-Earth planet orbiting an M-type star. We performed retrievals on the transmission spectrum of L 98-59 d obtained using NIRSpec G395H during a single transit, f…
Latitudinal Asymmetry in the Dayside Atmosphere of WASP-43b
Ryan C. Challener, Zafar Rustamkulov, Elspeth K. H. Lee +9
We present two-dimensional near-infrared temperature maps of the canonical hot Jupiter WASP-43b using a phase-curve observation with JWST NIRSpec/G395H. From the white-light planet…
A warm Neptune's methane reveals core mass and vigorous atmospheric mixing
David K. Sing, Zafar Rustamkulov, Daniel P. Thorngren +18
Observations of transiting gas giant exoplanets have revealed a pervasive depletion of methane, which has only recently been identified atmospherically. The depletion is thought to…
Medium Resolution 0.97-5.3 micron spectra of Very Young Benchmark Brown Dwarfs with NIRSpec onboard the James Webb Space Telescope
Elena Manjavacas, Pascal Tremblin, Stephan Birkmann +7
Spectra of young benchmark brown dwarfs with well-known ages are vital to characterize other brown dwarfs, for which ages are in general not known. These spectra are also crucial t…