THIS PROPOSAL AIMS TO PROBE THE STRUCTURE OF PLANETARY SYSTEMS AND ITS DEPENDENCY ON THE HOST STAR MASS. THE GOAL OF THE PROGRAM IS TO CONTINUE THE CHARACTERIZATION OF KEPLER PLANET HOST STARS (PRECISE STELLAR PARAMETERS AND DILUTION FACTORS HENCE PRECISE EXOPLANET RADII) EXTENDING IT TO LOWER-MASS SYSTEMS. THIS WILL ALLOW EXPLORATION OF DIFFERENT IRRADIATION ENVIRONMENTS AND WILL ADDRESS THE RADIUS-FLUX DISTRIBUTION OF PLANETS AS A FUNCTION OF STELLAR TYPE. ADDITIONALLY THIS WORK WILL TEST HOW PLANETARY PROPERTIES NAMELY PLANET DISTRIBUTION VARIES AS A FUNCTION OF STELLAR MASS.