36 citations · 81 across the 3 of their papers we have counts for
5 papers
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…
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…
Lessons from early Earth: UV surface radiation should not limit the habitability of active M star systems
Jack T. O'Malley-James, Lisa Kaltenegger
The closest potentially habitable worlds outside our Solar system orbit a different kind of star than our Sun: smaller red dwarf stars. Such stars can flare frequently, bombarding…
The Vegetation Red Edge Biosignature Through Time on Earth and Exoplanets
Jack T. O'Malley-James, Lisa Kaltenegger
The high reflection of land vegetation in the near-infrared, the vegetation red edge (VRE), is often cited as a spectral biosignature for surface vegetation on exoplanets. The VRE…
In Search of Future Earths: Assessing the possibility of finding Earth analogues in the later stages of their habitable lifetimes
J. T. O'Malley-James, J. S. Greaves, J. A. Raven +1
Earth will become uninhabitable within 2-3 Gyr as a result of the moving boundaries of the habitable zone caused by the increasing luminosity of the Sun. Predictions about the futu…