Selection effects in JWST transmission spectroscopy and HWO reflected-light imaging may cause the first biosignature detection to arise from an atypical planet rather than a representative Earth analog.
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7 Pith papers cite this work. Polarity classification is still indexing.
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Climate states on exoplanets with the same atmospheric composition create different reflectance spectra, changing the detectability of atmospheric features and biosignatures, with seasonal variations on high-obliquity worlds adding time-dependent signals.
Simulations using occurrence rates rank HWO ExEP stars by probability of hosting a temperate terrestrial planet or moon, reaching up to 50% for some systems.
N-body simulations demonstrate long-term dynamical stability of the HD 20794 system across a range of inclinations, with planet d identified as the lowest-mass high-eccentricity HZ-crossing planet.
Collates archival stellar activity and rotation data for potential HWO targets, finding measurements for at least 70% of high-interest systems but activity cycles for fewer than 20%.
The ExEP Science Gap List identifies 17 areas where current knowledge falls short of requirements for defining and maximizing the science return from future NASA exoplanet missions.
citing papers explorer
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The First Remotely Detected Biosignature May Not Be the Most Common: Implications for JWST and HWO
Selection effects in JWST transmission spectroscopy and HWO reflected-light imaging may cause the first biosignature detection to arise from an atypical planet rather than a representative Earth analog.
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Impact of Climate States and Seasons on Future Exo-Earth Observations
Climate states on exoplanets with the same atmospheric composition create different reflectance spectra, changing the detectability of atmospheric features and biosignatures, with seasonal variations on high-obliquity worlds adding time-dependent signals.
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Predictive Rankings of the Probability for Temperate Terrestrial Worlds for the HWO ExEP Mission Star List
Simulations using occurrence rates rank HWO ExEP stars by probability of hosting a temperate terrestrial planet or moon, reaching up to 50% for some systems.
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Dynamical Stability and Habitability in the HD 20794 System
N-body simulations demonstrate long-term dynamical stability of the HD 20794 system across a range of inclinations, with planet d identified as the lowest-mass high-eccentricity HZ-crossing planet.
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HWO Target Stars and Systems: Activity and Rotation Catalog (ARC) of Potential Target Stars for the Habitable Worlds Observatory
Collates archival stellar activity and rotation data for potential HWO targets, finding measurements for at least 70% of high-interest systems but activity cycles for fewer than 20%.
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NASA Exoplanet Exploration Program (ExEP) Science Gap List
The ExEP Science Gap List identifies 17 areas where current knowledge falls short of requirements for defining and maximizing the science return from future NASA exoplanet missions.
- Characterizing Earth analogs may require a moderate or high-resolution spectrograph