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Multi-wavelength transit and secondary-eclipse light-curve observations are some of the most powerful techniques to probe the thermo-chemical properties of exoplanets. Although the large planet-to-star brightness contrast and few available…

Earth and Planetary Astrophysics · Physics 2016-04-06 Patricio E. Cubillos

Interpreting the observations of exoplanet atmospheres to constrain physical and chemical properties is typically done using Bayesian retrieval techniques. Because these methods require many model computations, a compromise is made between…

Earth and Planetary Astrophysics · Physics 2024-01-10 Francisco Ardévol Martínez , Michiel Min , Daniela Huppenkothen , Inga Kamp , Paul I. Palmer

Exoplanet atmospheric retrieval is a computational technique widely used to infer properties of planetary atmospheres from remote spectroscopic observations. Retrieval codes typically employ Bayesian sampling algorithms or machine learning…

Earth and Planetary Astrophysics · Physics 2023-03-24 Ryan J. MacDonald , Natasha E. Batalha

Characterization of the composition, surface properties, and atmospheric conditions of exoplanets is a rapidly progressing field as the data to study such aspects become more accessible. Bright targets, such as the multi-planet 55 Cancri…

Earth and Planetary Astrophysics · Physics 2015-05-28 Stephen R. Kane , Dawn M. Gelino , David R. Ciardi , Diana Dragomir , Kaspar von Braun

Relatively long-period nonsynchronized planets---such as warm Jupiters---potentially retain the primordial rotation, eccentricity, and obliquity that might encapsulate information on planetary climate and formation processes. To date, there…

Earth and Planetary Astrophysics · Physics 2019-03-20 Kazumasa Ohno , Xi Zhang

The Ariel Space Mission aims to observe a diverse sample of exoplanet atmospheres across a wide wavelength range of 0.5 to 7.8 microns. The observations are organized into four Tiers, with Tier 1 being a reconnaissance survey. This Tier is…

Earth and Planetary Astrophysics · Physics 2023-09-14 Andrea Bocchieri , Lorenzo V. Mugnai , Enzo Pascale , Quentin Changeat , Giovanna Tinetti

In this study, we treat Earth as an exoplanet and investigate our home planet by means of a potential future mid-infrared (MIR) space mission called the Large Interferometer For Exoplanets (LIFE). We combine thermal spectra from an…

Earth and Planetary Astrophysics · Physics 2024-05-14 Jean-Noël Mettler , Björn S. Konrad , Sascha P. Quanz , Ravit Helled

Eclipse mapping is a powerful tool for measuring 3D profiles of exoplanet atmospheres. To date, only JWST has been capable of widely applying this technique, but as a general observatory, it is too time-limited to conduct population-level…

The photoionization-driven evaporation of planetary atmospheres has emerged as a potentially fundamental process for planets on short period orbits. While 1-D studies have proven the effectiveness of stellar fluxes at altering the…

Earth and Planetary Astrophysics · Physics 2018-12-19 Alex Debrecht , Jonathan Carroll-Nellenback , Adam Frank , John McCann , Ruth Murray-Clay , Eric G. Blackman

Earthshine observations offer a unique opportunity to study Earth as an exoplanet seen from the Moon. As the Sun-Earth-Moon geometry changes, Earth can be observed as a spatially unresolved exoplanet at different phase angles, providing…

Earth and Planetary Astrophysics · Physics 2025-09-18 Giulia Roccetti , Michael F. Sterzik , Claudia Emde , Mihail Manev , Stefano Bagnulo , Julia V. Seidel

We propose a new data analysis method for obtaining transmission spectra of exoplanet atmospheres and brightness variation across the stellar disk from transit observations. The new method is capable of recovering exoplanet atmosphere…

Solar and Stellar Astrophysics · Physics 2018-05-02 Erik Aronson , Nikolai Piskunov

Ares is an extension of the TauREx 3 retrieval framework for the Martian atmosphere. Ares is a collection of new atmospheric parameters and forward models, designed for the European Space Agency's (ESA) Trace Gas Orbiter (TGO) Nadir and…

Earth and Planetary Astrophysics · Physics 2020-07-28 George Cann , Ahmed Al-Refaie , Ingo Waldmann , Dave Walton , Jan-Peter Muller

Reflected light photometry of terrestrial exoplanets could reveal the presence of oceans and continents, hence placing direct constraints on the current and long-term habitability of these worlds. Inferring the albedo map of a planet from…

Earth and Planetary Astrophysics · Physics 2022-01-19 Lucas Teinturier , Nicholas Vieira , Elisa Jacquet , Juliette Geoffrion , Youssef Bestavros , Dylan Keating , Nicolas B. Cowan

More than a thousand exoplanets have been discovered over the last decade. Perhaps more excitingly, probing their atmospheres has become possible. With current data we have glimpsed the diversity of exoplanet atmospheres that will be…

Earth and Planetary Astrophysics · Physics 2015-06-18 Vivien Parmentier , Adam P. Showman , Julien de Wit

With the advanced capabilities of ground- and space-based telescopes, exoplanet science is beginning to characterize the physics and chemistry of exoplanet atmospheres. However, interpreting exoplanet observations requires sophisticated…

Earth and Planetary Astrophysics · Physics 2026-03-27 Maggie A. Thompson

The physical characteristics and atmospheric chemical composition of newly discovered exoplanets are often inferred from their transit spectra which are obtained from complex numerical models of radiative transfer. Alternatively, simple…

Earth and Planetary Astrophysics · Physics 2021-12-23 Konstantin T. Matchev , Katia Matcheva , Alexander Roman

The planetary mass and radius sensitivity of exoplanet discovery capabilities has reached into the terrestrial regime. The focus of such investigations is to search within the Habitable Zone where a modern Earth-like atmosphere may be a…

Earth and Planetary Astrophysics · Physics 2018-12-19 Stephen R. Kane , Alma Y. Ceja , Michael J. Way , Elisa V. Quintana

A key goal of exoplanet spectroscopy is to measure atmospheric properties, such as abundances of chemical species, in order to connect them to our understanding of atmospheric physics and planet formation. In this new era of high-quality…

Earth and Planetary Astrophysics · Physics 2024-04-18 Matthew C. Nixon , Luis Welbanks , Peter McGill , Eliza M. -R. Kempton

With the rapid developments in the exoplanet field, more and more terrestrial exoplanets are being detected. Characterising their atmospheres using transit observations will become a key datum in the quest for detecting an Earth-like…

Earth and Planetary Astrophysics · Physics 2015-06-19 Fei Yan , Robert A. E. Fosbury , Monika G. Petr-Gotzens , Gang Zhao , Wei Wang , Liang Wang , Yujuan Liu , Enric Pallé

Studying the atmospheres of exoplanets is one of the most promising ways to learn about distant worlds beyond our solar system. The composition of an exoplanet's atmosphere can provide critical insights into its geology and potential…

Earth and Planetary Astrophysics · Physics 2025-05-05 Surangkhana Rukdee