Extended Data Fig. 3: Theoretical pressure−abundance profiles of the atmosphere of HD 209458b.
From: Five carbon- and nitrogen-bearing species in a hot giant planet’s atmosphere
The panels show the abundance profiles (mole fraction) of atomic and molecular species for different atmospheric C/O ratios and metallicities ([M/H]) under the assumption of radiative and thermochemical equilibrium. Each colour corresponds to a different species (see key at top-right).
