Exoplanetary atmospheres: key insights, challenges, and prospects

N Madhusudhan - Annual Review of Astronomy and …, 2019 - annualreviews.org
Exoplanetary science is on the verge of an unprecedented revolution. The thousands of
exoplanets discovered over the past decade have most recently been supplemented by …

Exoplanet biosignatures: understanding oxygen as a biosignature in the context of its environment

VS Meadows, CT Reinhard, GN Arney… - Astrobiology, 2018 - liebertpub.com
We describe how environmental context can help determine whether oxygen (O2) detected
in extrasolar planetary observations is more likely to have a biological source. Here we …

High tide or riptide on the cosmic shoreline? A water-rich atmosphere or stellar contamination for the warm super-Earth GJ 486b from JWST observations

SE Moran, KB Stevenson, DK Sing… - The Astrophysical …, 2023 - iopscience.iop.org
Planets orbiting M-dwarf stars are prime targets in the search for rocky exoplanet
atmospheres. The small size of M dwarfs renders their planets exceptional targets for …

A JWST transmission spectrum of the nearby Earth-sized exoplanet LHS 475 b

J Lustig-Yaeger, G Fu, EM May, KNO Ceballos… - Nature …, 2023 - nature.com
The critical first step in the search for life on exoplanets over the next decade is to determine
whether rocky planets transiting small M-dwarf stars possess atmospheres and, if so, what …

A solar C/O and sub-solar metallicity in a hot Jupiter atmosphere

MR Line, M Brogi, JL Bean, S Gandhi, J Zalesky… - Nature, 2021 - nature.com
Measurements of the atmospheric carbon (C) and oxygen (O) relative to hydrogen (H) in hot
Jupiters (relative to their host stars) provide insight into their formation location and …

Interpreting the atmospheric composition of exoplanets: sensitivity to planet formation assumptions

P Mollière, T Molyarova, B Bitsch… - The Astrophysical …, 2022 - iopscience.iop.org
Constraining planet formation based on the atmospheric composition of exoplanets is a
fundamental goal of the exoplanet community. Existing studies commonly try to constrain …

petitRADTRANS-A Python radiative transfer package for exoplanet characterization and retrieval

P Mollière, JP Wardenier, R Van Boekel… - Astronomy & …, 2019 - aanda.org
We present the easy-to-use, publicly available, Python package petitRADTRANS, built for
the spectral characterization of exoplanet atmospheres. The code is fast, accurate, and …

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 …

Retrieving scattering clouds and disequilibrium chemistry in the atmosphere of HR 8799e

P Mollière, T Stolker, S Lacour, G Otten… - Astronomy & …, 2020 - aanda.org
Context. Clouds are ubiquitous in exoplanet atmospheres and they represent a challenge
for the model interpretation of their spectra. When generating a large number of model …

Retrieving temperatures and abundances of exoplanet atmospheres with high-resolution cross-correlation spectroscopy

M Brogi, MR Line - The Astronomical Journal, 2019 - iopscience.iop.org
High-resolution spectroscopy (R≥ 25,000) has recently emerged as one of the leading
methods for detecting atomic and molecular species in the atmospheres of exoplanets …