Circumstellar disks as a research area encompasses the observational, theoretical, and computational study of gas and dust structures surrounding young and evolved stars, with emphasis on their formation, dynamics, composition, and role in planet formation and mass-loss processes. This field integrates high-resolution imaging, spectroscopy, radiative transfer modeling, and magnetohydrodynamics to investigate protoplanetary and debris disks, disk accretion and winds, dust growth and migration, and disk-planet interactions. Research also addresses disk chemistry, ionization and thermal structure, and the coupling of disks to stellar magnetic fields, linking star formation, early stellar evolution, and the emergence of planetary systems.
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