529 citations · 1.3k across the 27 of their papers we have counts for
25 papers · 1 filter
Climatic Effects of Ocean Salinity on M Dwarf Exoplanets
Kyle Batra, Stephanie L. Olson
Ocean salinity is known to dramatically affect the climates of Earth-like planets orbiting Sun-like stars, with high salinity leading to less ice and higher surface temperature. Ho…
Superhabitability of High-Obliquity and High-Eccentricity Planets
Jonathan Jernigan, Émilie Laflèche, Angela Burke +1
Planetary obliquity and eccentricity influence climate by shaping the spatial and temporal patterns of stellar energy incident at a planet's surface, affecting both the annual mean…
Evaluating the Plausible Range of N2O Biosignatures on Exo-Earths: An Integrated Biogeochemical, Photochemical, and Spectral Modeling Approach
Edward W. Schwieterman, Stephanie L. Olson, Daria Pidhorodetska +7
Nitrous oxide (N2O) -- a product of microbial nitrogen metabolism -- is a compelling exoplanet biosignature gas with distinctive spectral features in the near- and mid-infrared, an…
Earth as an Exoplanet. II. Earth's Time-variable Thermal Emission and Its Atmospheric Seasonality of Bioindicators
Jean-Noel Mettler, Sascha P. Quanz, Ravit Helled +2
We assess the dependence of Earth's disk-integrated mid-infrared thermal emission spectrum on observation geometries and investigate which and how spectral features are impacted by…
The Effect of Ocean Salinity on Climate and Its Implications for Earth's Habitability
Stephanie L. Olson, Malte F. Jansen, Dorian S. Abbot +2
The influence of atmospheric composition on the climates of present-day and early Earth has been studied extensively, but the role of ocean composition has received less attention.…
Moderately High Obliquity Promotes Biospheric Oxygenation
Megan N. Barnett, Stephanie L. Olson
Planetary obliquity is a first order control on planetary climate and seasonal contrast, which has a number of cascading consequences for life. How moderately high obliquity (obliq…
Leveraging Models to Constrain the Climates of Rocky Exoplanets
Thaddeus D. Komacek, Wanying Kang, Jacob Lustig-Yaeger +1
In recent years, numerical models that were developed for Earth have been adapted to study exoplanetary climates to understand how the broad range of possible exoplanetary properti…
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…
Probing the capability of future direct imaging missions to spectrally constrain the frequency of Earth-like planets
Jade H. Checlair, Geronimo L. Villanueva, Benjamin P. C. Hayworth +6
A critical question in astrobiology is whether exoEarth candidates (EECs) are Earth-like, in that they originate life that progressively oxygenates their atmospheres similarly to E…
Non-detection of O/O informs frequency of Earth-like planets with LUVOIR but not HabEx
Jade H. Checlair, Benjamin P. C. Hayworth, Stephanie L. Olson +5
A critical question in the search for extraterrestrial life is whether exoEarths are Earth-like, in that they host life that progressively oxygenates their atmospheres roughly foll…
The Effect of Substellar Continent Size on Ocean Dynamics of Proxima Centauri b
Andrea M. Salazar, Stephanie L. Olson, Thaddeus D. Komacek +2
The potential habitability of tidally locked planets orbiting M-dwarf stars has been widely investigated in recent work, typically with a non-dynamic ocean and without continents.…
No Snowball on Habitable Tidally Locked Planets with a Dynamic Ocean
Jade H. Checlair, Stephanie L. Olson, Malte F. Jansen +1
Terrestrial planets orbiting within the habitable zones of M-stars are likely to become tidally locked in a 1:1 spin:orbit configuration and are prime targets for future characteri…
Oceanographic Considerations for Exoplanet Life Detection
Stephanie L. Olson, Malte Jansen, Dorian S. Abbot
Liquid water oceans are at the center of our search for life on exoplanets because water is a strict requirement for life as we know it. However, oceans are dynamic habitats---and…
Robustness of Gaian Feedbacks to Climate Perturbations
Olivia D. N. Alcabes, Stephanie Olson, Dorian S. Abbot
The Gaia hypothesis postulates that life regulates its environment to be favorable for its own survival. Most planets experience numerous perturbations throughout their lifetimes s…
Rethinking CO Antibiosignatures in the Search for Life Beyond the Solar System
Edward W. Schwieterman, Christopher T. Reinhard, Stephanie L. Olson +4
Some atmospheric gases have been proposed as counter indicators to the presence of life on an exoplanet if remotely detectable at sufficient abundance (i.e., antibiosignatures), in…
The remote detectability of Earth's biosphere through time and the importance of UV capability for characterizing habitable exoplanets
Christopher T. Reinhard, Edward W. Schwieterman, Stephanie L. Olson +10
Thousands of planets beyond our solar system have been discovered to date, dozens of which are rocky in composition and are orbiting within the circumstellar habitable zone of thei…
A Statistical Comparative Planetology Approach to Maximize the Scientific Return of Future Exoplanet Characterization Efforts
Jade H. Checlair, Dorian S. Abbot, Robert J. Webber +37
Provided that sufficient resources are deployed, we can look forward to an extraordinary future in which we will characterize potentially habitable planets. Until now, we have had…
A Limited Habitable Zone for Complex Life
Edward W. Schwieterman, Christopher T. Reinhard, Stephanie L. Olson +2
The habitable zone (HZ) is commonly defined as the range of distances from a host star within which liquid water, a key requirement for life, may exist on a planet's surface. Subst…
Atmospheric Seasonality as an Exoplanet Biosignature
Stephanie L. Olson, Edward W. Schwieterman, Christopher T. Reinhard +4
Current investigations of exoplanet biosignatures have focused on static evidence of life, such as the presence of biogenic gases like O2 or CH4. However, the expected diversity of…
Earth: Atmospheric Evolution of a Habitable Planet
Stephanie L. Olson, Edward W. Schwieterman, Christopher T. Reinhard +1
Our present-day atmosphere is often used as an analog for potentially habitable exoplanets, but Earth's atmosphere has changed dramatically throughout its 4.5 billion year history.…
Disequilibrium biosignatures over Earth history and implications for detecting exoplanet life
Joshua Krissansen-Totton, Stephanie Olson, David C. Catling
Chemical disequilibrium in planetary atmospheres has been proposed as a generalized method for detecting life on exoplanets through remote spectroscopy. Among solar system planets…
Life Beyond the Solar System: Remotely Detectable Biosignatures
Shawn Domagal-Goldman, Nancy Y. Kiang, Niki Parenteau +38
For the first time in human history, we will soon be able to apply the scientific method to the question "Are We Alone?" The rapid advance of exoplanet discovery, planetary systems…
The Importance of UV Capabilities for Identifying Inhabited Exoplanets with Next Generation Space Telescopes
Edward Schwieterman, Christopher Reinhard, Stephanie Olson +1
The strongest remotely detectable signature of life on our planet today is the photosynthetically produced oxygen (O2) in our atmosphere. However, recent studies of Earth's geochem…
Exoplanet Biosignatures: A Review of Remotely Detectable Signs of Life
Edward W. Schwieterman, Nancy Y. Kiang, Mary N. Parenteau +15
In the coming years and decades, advanced space- and ground-based observatories will allow an unprecedented opportunity to probe the atmospheres and surfaces of potentially habitab…