DREAM

The distribution of close-in exoplanets is shaped by a complex interplay between atmospheric and dynamical processes. Desert-Rim Exoplanets Atmosphere Migration (DREAM) program aims at disentangling those processes through the study hot Neptune desert, whose rim hosts planets that are undergoing, or survived, evaporation orbital migration. In this first paper, we use Rossiter-McLaughlin revolutions (RMR) technique to investigate architecture 14 ranging from mini-Neptune Jupiter-size covering broad range distances. While no signal detected for two smallest planets, were able constrain sky-projected spin-orbit angle six time, revise its value others, and, thanks constraints on stellar inclination, derive 3D in seven systems. These results reveal striking three-quarters polar orbits our sample, all being systems with single planet but various planetary types. High-eccentricity migration favored explain such several evaporating warm Neptunes, supporting role late shaping desert populating rim. Putting measurements wider context population will be useful their architectures.