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High-Resolution Transmission Spectra of Earth through Geological Time
Lisa Kaltenegger, Zifan Lin, Jack Madden
The next generation of ground- and space-based telescopes will be able to observe rocky Earth-like planets in the near future, transiting their host star. We explore how the transm…
High-resolution reflection spectra for Proxima b and Trappist-1e models for ELT observations
Zifan Lin, Lisa Kaltenegger
The closest stars that harbor potentially habitable planets are cool M-stars. Upcoming ground- and space-based telescopes will be able to search the atmosphere of such planets for…
How to Characterize Habitable Worlds and Signs of Life
L. Kaltenegger
The detection of exoplanets orbiting other stars has revolutionized our view of the cosmos. First results suggest that it is teeming with a fascinating diversity of rocky planets,…
Biofluorescent Worlds I: Global Biological Fluorescence as a Biosignature
J. T. O'Malley-James, L. Kaltenegger
In this paper, we analyze a new possible biological surface feature for habitable worlds orbiting other stars: biofluorescence. High ultraviolet (UV) and blue radiation fluxes driv…
The Habitability of GJ 357 d : Possible Climates and Observability
L. Kaltenegger, J. Madden, Z. Lin +5
The GJ 357 system harbors 3 planets orbiting a bright, nearby M2.5V star at 9.44pc. The innermost planet GJ 357 b (TOI-562.01) is a hot transiting Earth-size planet with Earth-like…
Expanding the Timeline for Earth's Photosynthetic Red Edge Biosignature
Jack T. O'Malley-James, Lisa Kaltenegger
When Carl Sagan observed the Earth during a Gallileo fly-by in 1993, he found a widely distributed surface pigment with a sharp reflection edge in the red part of the spectrum, whi…