Location of the homogeneous-to-heterogeneous aerosol transition

Determine where the transition from homogeneous to longitudinally heterogeneous aerosol coverage occurs among giant exoplanets, particularly across the approximately 800–1000 K equilibrium-temperature regime.

Background

The paper frames warm giant planets near 800–1000 K as potentially occupying a transition between broadly uniform aerosol coverage and stronger morning–evening differences. Previous observations and models had suggested such a transition, but the available population sample had not established its location in planetary-parameter space. WASP-69 b is presented as a new data point in this regime, extending the sample toward lower irradiation without fully determining the transition boundary.