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Exoplanet Exploration Program Analysis Group (ExoPAG) Report to Paul Hertz Regarding Large Mission Concepts to Study for the 2020 Decadal Survey
B. Scott Gaudi, Eric Agol, Daniel Apai +36
This is a joint summary of the reports from the three Astrophysics Program Analysis Groups (PAGs) in response to the "Planning for the 2020 Decadal Survey" charge given by the Astr…
Stratospheric Temperatures and Water Loss from Moist Greenhouse Atmospheres of Earth-like Planets
James F. Kasting, Howard Chen, Ravi Kumar Kopparapu
A radiative-convective climate model is used to calculate stratospheric temperatures and water vapor concentrations for ozone-free atmospheres warmer than that of modern Earth. Col…
Abiotic O Levels on Planets around F, G, K, and M Stars: Possible False Positives for Life?
C. E. Harman, E. W. Schwieterman, J. C. Schottelkotte +1
In the search for life on Earth-like planets around other stars, the first (and likely only) information will come from the spectroscopic characterization of the planet's atmospher…
Testing the Early Mars H2-CO2 Greenhouse Hypothesis with a 1-D Photochemical Model
Natasha Batalha, Shawn D. Domagal-Goldman, Ramses Ramirez +1
A recent study by Ramirez et al. (2014) demonstrated that an atmosphere with 1.3-4 bar of CO2 and H2O, in addition to 5-20% H2, could have raised the mean annual and global surface…
Characterizing the Habitable Zones of Exoplanetary Systems with a Large Ultraviolet/Visible/Near-IR Space Observatory
Kevin France, Evgenya Shkolnik, Jeffrey Linsky +32
Understanding the surface and atmospheric conditions of Earth-size, rocky planets in the habitable zones (HZs) of low-mass stars is currently one of the greatest astronomical endea…