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- W2891678273 abstract "In this paper, we analyse a new possible biological surface feature for habitable worlds orbiting other stars: biofluorescence. High ultraviolet (UV) and blue radiation fluxes drive the strongest biofluorescence in terrestrial fluorescent pigments and proteins. F stars emit more blue and UV radiation than the Sun, while planets and exomoons orbiting such stars remain in the habitable zone for 2–4 Gyr; a time span that could allow a complex biosphere to develop. Therefore, we propose biofluorescence as a new surface biosignature for F star planets. We investigate how the extra emission from surface fluorescence could cause observable signals at specific wavelengths in the visible spectrum. Using the absorption and emission characteristics of common coral fluorescent pigments and proteins, we simulate the increased emission at specific visible wavelengths caused by strong fluorescence, accounting for the effects of different (non-fluorescent) surface features, atmospheric absorption and cloud cover. Our model shows that exoplanets with a fluorescent biosphere could have characteristic surface colours that allow the presence of surface life to be inferred from observations with upcoming telescopes." @default.
- W2891678273 created "2018-09-27" @default.
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- W2891678273 date "2018-09-06" @default.
- W2891678273 modified "2023-09-24" @default.
- W2891678273 title "Biofluorescent worlds: global biological fluorescence as a biosignature" @default.
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- W2891678273 doi "https://doi.org/10.1093/mnras/sty2411" @default.
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