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The First Remotely Detected Biosignature May Not Be the Most Common: Implications for JWST and HWO
Ravi Kopparapu
The first detected member of a new astronomical class is often not representative of the underlying population, but instead reflects the selection effects of the observing techniqu…
Atmospheric Escape Rates from Mars - If it Orbited an Old M-Dwarf Star
David A. Brain, Ofer Cohen, Thomas E. Cravens +35
Atmospheric escape is an important process that influences the evolution of planetary atmospheres. A variety of physical mechanisms can contribute to escape from an atmosphere, inc…
Projections of Earth's Technosphere: Strategies for Observing Technosignatures on Terrestrial Exoplanets
Jacob Haqq-Misra, Ravi Kopparapu, George Profitiliotis
The search for technosignatures--remotely detectable evidence of extraterrestrial technology--draws upon examples from the recent history of Earth as well as projections of Earth's…
Are We There Yet? Challenges in Quantifying the Frequency of Earth Analogs in the Habitable Zone
Rachel B. Fernandes, Samson Johnson, Galen J. Bergsten +43
Searching for life elsewhere in the universe is one of the most highly prioritized pursuits in astronomy today. However, the ability to observe evidence of Earth-like life through…
Discovery of a Nearby Habitable Zone Super-Earth Candidate Amenable to Direct Imaging
Corey Beard, Paul Robertson, Jack Lubin +31
We present the discovery of GJ 251 c, a candidate super-Earth orbiting in the Habitable Zone (HZ) of its M dwarf host star. Using high-precision Habitable-zone Planet Finder (HPF)…
Chemistry, Climate, and Transmission Spectra of TRAPPIST-1 e Explored with a Multimodel Sparse Sampled Ensemble
Eric T. Wolf, Edward W. Schwieterman, Jacob Haqq-Misra +6
TRAPPIST-1 e is one of a few habitable zone exoplanets that is amenable to characterization in the near term. In this study our motivations are both scientific and technical. Our t…