We study star and planet formation in the youngest phases of protostellar evolution and the presence and survival of planets in highly evolved stars that are close to death. To pursue these aims, we use a multiwavelength approach mainly involving data in the optical, infrared, and radio domains with particular emphasis in high angular resolution observations in the millimeter and centimeter range. Our research is focused on the study of the possible presence and characteristics of disks or dust belts, and their implications in planetary formation, around massive stars, multiple stars, mature stars, and in stars surrounded by dwarf disks. We look for signs of interaction between planets and stars near our solar system and in the ejecta of very evolved stars.
All these pieces will undoubtedly contribute to the understanding of exoplanetary systems as diverse as those being found in recent years and how they, in turn, evolve and survive throughout stellar evolution.