Transiting exoplanet atmospheres in the era of JWST

EMR Kempton, HA Knutson - Reviews in Mineralogy …, 2024 - pubs.geoscienceworld.org
The field of exoplanet atmospheric characterization has recently made considerable
advances with the advent of high-resolution spectroscopy from large ground-based …

Host stars and how their compositions influence exoplanets

NR Hinkel, A Youngblood… - … in Mineralogy and …, 2024 - pubs.geoscienceworld.org
Though distant and seemingly unreachable, planets outside the Solar System, or
exoplanets, have captivated the imagination of scientists and stargazers alike. With more …

Atmospheric reconnaissance of TRAPPIST-1 b with JWST/NIRISS: evidence for strong stellar contamination in the transmission spectra

O Lim, B Benneke, R Doyon… - The Astrophysical …, 2023 - iopscience.iop.org
TRAPPIST-1 is a nearby system of seven Earth-sized, temperate, rocky exoplanets transiting
a Jupiter-sized M8. 5V star, ideally suited for in-depth atmospheric studies. Each TRAPPIST …

Potential Atmospheric Compositions of TRAPPIST-1 c Constrained by JWST/MIRI Observations at 15 μm

AP Lincowski, VS Meadows, S Zieba… - The Astrophysical …, 2023 - iopscience.iop.org
Abstract The first James Webb Space Telescope observations of TRAPPIST-1 c showed a
secondary eclipse depth of 421±94 ppm at 15 μm, which is consistent with a bare rock …

Transmission Spectroscopy of the Habitable Zone Exoplanet LHS 1140 b with JWST/NIRISS

C Cadieux, R Doyon, RJ MacDonald… - The Astrophysical …, 2024 - iopscience.iop.org
LHS 1140 b is the second-closest temperate transiting planet to Earth with an equilibrium
temperature low enough to support surface liquid water. At 1.730±0.025 R⊕, LHS 1140 b …

Double trouble: two transits of the super-Earth GJ 1132 b observed with JWST NIRSpec G395H

EM May, RJ MacDonald, KA Bennett… - The Astrophysical …, 2023 - iopscience.iop.org
The search for rocky planet atmospheres with JWST has focused on planets transiting M
dwarfs. Such planets have favorable planet-to-star size ratios, enhancing the amplitude of …

Characterizing the Near-infrared Spectra of Flares from TRAPPIST-1 during JWST Transit Spectroscopy Observations

WS Howard, AF Kowalski, L Flagg… - The Astrophysical …, 2023 - iopscience.iop.org
We present the first analysis of JWST near-infrared spectroscopy of stellar flares from
TRAPPIST-1 during transits of rocky exoplanets. Four flares were observed from 0.6–2.8 μm …

TESS Hunt for Young and Maturing Exoplanets (THYME). XI. An Earth-sized Planet Orbiting a Nearby, Solar-like Host in the 400 Myr Ursa Major Moving Group

BK Capistrant, M Soares-Furtado… - The Astronomical …, 2024 - iopscience.iop.org
Young terrestrial worlds are critical test beds to constrain prevailing theories of planetary
formation and evolution. We present the discovery of HD 63433 d—a nearby (22 pc), Earth …

The erosion of large primary atmospheres typically leaves behind substantial secondary atmospheres on temperate rocky planets

J Krissansen-Totton, N Wogan, M Thompson… - Nature …, 2024 - nature.com
Exoplanet exploration has revealed that many—perhaps most—terrestrial exoplanets
formed with substantial H2-rich envelopes, seemingly in contrast to solar system terrestrials …

JWST/NIRCam Transmission Spectroscopy of the Nearby Sub-Earth GJ 341b

J Kirk, KB Stevenson, G Fu… - The Astronomical …, 2024 - iopscience.iop.org
We present a JWST/Near Infrared Camera (NIRCam) transmission spectrum from 3.9 to 5.0
μm of the recently validated sub-Earth GJ 341b (RP= 0.92 R⊕, T eq= 540 K) orbiting a …