1.6k citations · 6.2k across the 75 of their papers we have counts for
77 papers
The Open-Source Photochem Code: A General Chemical and Climate Model for Interpreting (Exo)Planet Observations
Nicholas F. Wogan, Natasha E. Batalha, Kevin Zahnle +7
With the launch of the James Webb Space Telescope, we are firmly in the era of exoplanet atmosphere characterization. Understanding exoplanet spectra requires atmospheric chemical…
Retrievals Applied To A Decision Tree Framework Can Characterize Earth-like Exoplanet Analogs
Amber V. Young, Jaime Crouse, Giada Arney +3
Exoplanet characterization missions planned for the future will soon enable searches for life beyond our solar system. Critical to the search will be the development of life detect…
Two Warm Super-Earths Transiting the Nearby M Dwarf TOI-2095
Elisa V. Quintana, Emily A. Gilbert, Thomas Barclay +55
We report the detection and validation of two planets orbiting TOI-2095 (TIC 235678745). The host star is a 3700K M1V dwarf with a high proper motion. The star lies at a distance o…
The transmission spectrum of the potentially rocky planet L 98-59 c
Thomas Barclay, Kyle B. Sheppard, Natasha Latouf +32
We present observations of the 1.35+/-0.07 Earth-radius planet L 98-59 c, collected using Wide Field Camera 3 on the Hubble Space Telescope. L 98-59 is a nearby (10.6 pc), bright (…
A transmission spectrum of the sub-Earth planet L98-59~b in 1.1-1.7 m
Mario Damiano, Renyu Hu, Thomas Barclay +20
With the increasing number of planets discovered by TESS, the atmospheric characterization of small exoplanets is accelerating. L98-59 is a M-dwarf hosting a multi-planet system, a…
Community Report from the Biosignatures Standards of Evidence Workshop
Victoria Meadows, Heather Graham, Victor Abrahamsson +72
The search for life beyond the Earth is the overarching goal of the NASA Astrobiology Program, and it underpins the science of missions that explore the environments of Solar Syste…
TRAPPIST-1h as an Exo-Titan. I. The Role of Assumptions about Atmospheric Parameters in Understanding an Exoplanet Atmosphere
Kathleen Mandt, Adrienn Luspay-Kuti, Jacob Lustig-Yaeger +2
The TRAPPIST-1 system is home to at least seven terrestrial planets and is a target of interest for future James Webb Space Telescope (JWST) observations. Additionally, these plane…
The Role of Atmospheric Exchange in False-Positive Biosignature Detection
Ryan C. Felton, Sandra T. Bastelberger, Kathleen E. Mandt +3
Saturn's Moon Titan receives volatiles into the top of its atmosphere-including atomic oxygen-sourced from cryovolcanoes on Enceladus. Similar types of atmosphere exchange from one…
The Outer Edge of the Venus Zone Around Main-Sequence Stars
Monica R. Vidaurri, Sandra T. Bastelberger, Eric T. Wolf +2
A key item of interest for planetary scientists and astronomers is the habitable zone, or the distance from a host star where a terrestrial planet can maintain necessary temperatur…
Final Report for SAG 22: A Target Star Archive for Exoplanet Science
Natalie R. Hinkel, Joshua Pepper, Christopher C. Stark +33
Present and upcoming NASA missions will be intensively observing a selected, partially overlapping set of stars for exoplanet studies. Key physical and chemical information about t…
The TRAPPIST-1 Habitable Atmosphere Intercomparison (THAI). Part III: Simulated Observables -- The return of the spectrum
Thomas J. Fauchez, Geronimo L. Villanueva, Denis E. Sergeev +11
The TRAPPIST-1 Habitable Atmosphere Intercomparison (THAI) is a community project that aims to quantify how dfferences in general circulation models (GCMs) could impact the climate…
The TRAPPIST-1 Habitable Atmosphere Intercomparison (THAI). Part II: Moist Cases -- The Two Waterworlds
Denis E. Sergeev, Thomas J. Fauchez, Martin Turbet +11
To identify promising exoplanets for atmospheric characterization and to make the best use of observational data, a thorough understanding of their atmospheres is needed. 3D genera…
The TRAPPIST-1 Habitable Atmosphere Intercomparison (THAI). Part I: Dry Cases -- The fellowship of the GCMs
Martin Turbet, Thomas J. Fauchez, Denis E. Sergeev +12
With the commissioning of powerful, new-generation telescopes such as the James Webb Space Telescope (JWST) and the ground-based Extremely Large Telescopes, the first characterizat…
Call for a Framework for Reporting Evidence for Life Beyond Earth
James Green, Tori Hoehler, Marc Neveu +3
Ours could realistically be the generation to discover evidence of life beyond Earth. With this privileged potential comes responsibility. The magnitude of the question, "are we al…
L 98-59: a Benchmark System of Small Planets for Future Atmospheric Characterization
Daria Pidhorodetska, Sarah E. Moran, Edward W. Schwieterman +10
L 98-59 is an M3V dwarf star that hosts three small (R < 1.6 Earth radii) planets. The host star is bright (K = 7.1) and nearby (10.6 pc), making the system a prime target for foll…
TRAPPIST Habitable Atmosphere Intercomparison (THAI) workshop report
Thomas J. Fauchez, Martin Turbet, Denis E. Sergeev +31
The era of atmospheric characterization of terrestrial exoplanets is just around the corner. Modeling prior to observations is crucial in order to predict the observational challen…
Claimed detection of PH in the clouds of Venus is consistent with mesospheric SO
Andrew P. Lincowski, Victoria S. Meadows, David Crisp +7
The observation of a 266.94 GHz feature in the Venus spectrum has been attributed to PH in the Venus clouds, suggesting unexpected geological, chemical or even biological proce…
Starshade Rendezvous: Exoplanet Sensitivity and Observing Strategy
Andrew Romero-Wolf, Geoffrey Bryden, Sara Seager +33
Launching a starshade to rendezvous with the Nancy Grace Roman Space Telescope would provide the first opportunity to directly image the habitable zones of nearby sunlike stars in…
Venus as a Nearby Exoplanetary Laboratory
Stephen R. Kane, Giada Arney, Paul Byrne +9
The key goals of the astrobiology community are to identify environments beyond Earth that may be habitable, and to search for signs of life in those environments. A fundamental as…
Accurate Machine Learning Atmospheric Retrieval via a Neural Network Surrogate Model for Radiative Transfer
Michael D. Himes, Joseph Harrington, Adam D. Cobb +8
Atmospheric retrieval determines the properties of an atmosphere based on its measured spectrum. The low signal-to-noise ratio of exoplanet observations require a Bayesian approach…
The Habitable Exoplanet Observatory (HabEx) Mission Concept Study Final Report
B. Scott Gaudi, Sara Seager, Bertrand Mennesson +183
The Habitable Exoplanet Observatory, or HabEx, has been designed to be the Great Observatory of the 2030s. For the first time in human history, technologies have matured sufficient…
Sensitive Probing of Exoplanetary Oxygen via Mid Infrared Collisional Absorption
Thomas J. Fauchez, Geronimo L. Villanueva, Edward W. Schwieterman +6
The collision-induced fundamental vibration-rotation band at 6.4 um is the most significant absorption feature from O2 in the infrared (Timofeyev and Tonkov, 1978; Rinslandet al.,…
Detectability of Molecular Signatures on TRAPPIST-1e through Transmission Spectroscopy Simulated for Future Space-Based Observatories
Daria Pidhorodetska, Thomas Fauchez, Geronimo Villanueva +2
Discoveries of terrestrial, Earth-sized exoplanets that lie within the habitable zone (HZ) of their host stars continue to occur at increasing rates. Transit spectroscopy can poten…
Impact of Clouds and Hazes on the Simulated JWST Transmission Spectra of Habitable Zone Planets in the TRAPPIST-1 System
Thomas J. Fauchez, Martin Turbet, Geronimo L. Villanueva +9
The TRAPPIST-1 system, consisting of an ultra-cool host star having seven known Earth-size planets will be a prime target for atmospheric characterization with JWST. However, the d…