Douglas N. C. Lin

Douglas N. C. Lin is a theoretical astrophysicist known for his research on how planets form and dynamically evolve within protoplanetary disks of gas and dust around young stars. His work has been influential in explaining planetary migration and the diversity of exoplanetary system architectures.

Lin has been a professor at the University of California, Santa Cruz, where he has conducted theoretical research on star formation, planetary dynamics, and astrophysical disks. He has also been involved with international research collaborations studying extrasolar planets.

Planetary migration is the process by which planets move through a protoplanetary disk, changing their orbital distance from their host star over time. Lin's theoretical models helped explain how 'hot Jupiters'—giant planets orbiting very close to their stars—could have formed farther out and then spiraled inward through gravitational interactions with the disk.

Lin's theoretical work on planet formation and disk dynamics has provided frameworks used by observational astronomers to interpret the surprising diversity of exoplanetary systems discovered since the 1990s. His models of how giant planets interact with gas disks remain widely cited in the exoplanet literature.