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Simulations of the Evolving Ozone Layer: Implications for the Early Earth, Exoplanets, and the Search For Life
Akhil Kumar, Gregory J. Cooke
Over 4 billion years, Earth's atmosphere has been transformed from a composition devoid of molecular oxygen (O) to one where O is now 21% of our modern atmosphere by volume…
Ecological modelling of hycean worlds
Gregory J. Cooke, Nikku Madhusudhan, Emily G. Mitchell
New observations are opening the possibility of characterising habitable environments in exoplanetary systems, with the recent example of the candidate hycean world K2-18 b. This m…
Exploring the Sub-Neptune Frontier with JWST
Nikku Madhusudhan, Måns Holmberg, Savvas Constantinou +1
Sub-Neptune planets, with sizes and masses between those of Earth and Neptune, dominate the exoplanet population. Sub-Neptunes are expected to be the most diverse family of the exo…
A Systematic Search for Trace Molecules in the Atmosphere of Exoplanet K2-18 b
Lorenzo Pica-Ciamarra, Nikku Madhusudhan, Gregory J. Cooke +2
The first transmission spectrum of the habitable-zone sub-Neptune K2-18 b with JWST has opened a new avenue for atmospheric characterisation of temperate low-mass exoplanets. The o…
Considerations for Photochemical Modeling of Possible Hycean Worlds
Gregory J. Cooke, Nikku Madhusudhan
JWST is revolutionising the study of temperate sub-Neptunes, starting with the first detection of carbon-bearing molecules in the habitable-zone sub-Neptune K2-18 b. The retrieved…