Temperate Super-Earths/Mini-Neptunes around M/K Dwarfs Consist of Two Populations Distinguished by Kepler and Spitzer Transit Depth Variations
Xueying Guo et al 2019 ApJ 880 64
A comparison of the Spitzer- and Kepler-bandpass apparent radii of a sample of 28 transiting super-Earths/mini-Neptunes around M/K dwarfs reveals that these small, temperate planets fall into two populations.