Signatures of Nitrogen Chemistry in Hot Jupiter Atmospheres

  title={Signatures of Nitrogen Chemistry in Hot Jupiter Atmospheres},
  author={Ryan J. MacDonald and Nikku Madhusudhan},
  journal={The Astrophysical Journal Letters},
Inferences of molecular compositions of exoplanetary atmospheres have generally focused on carbon, hydrogen, and oxygen-bearing molecules. Recently, additional absorption in Hubble Space Telescope Wide Field Camera 3 (WFC3) transmission spectra around 1.55 μm has been attributed to nitrogen-bearing chemical species: NH3 or HCN. These species, if present in significant abundance, would be strong indicators of disequilibrium chemical processes—e.g., vertical mixing and photochemistry. The derived… 

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