Halting planet migration by photoevaporation from the central source

Isamu Matsuyama, Doug Johnstone, Norman Murray

Research output: Contribution to journalArticlepeer-review

45 Scopus citations


The recent discovery of Jupiter mass planets orbiting at a few AU from their stars complements earlier detections of massive planets on very small orbits. The short-period orbits strongly suggest that planet migration has occurred, with the likely mechanism being tidal interactions between the planets and the gas disks out of which they formed. The newly discovered long-period planets, together with the gas giant planets in our solar system, show that migration is either absent or rapidly halted in at least some systems. We propose a mechanism for halting type II migration at several AU in a gas disk. Photoevaporation of the disk by irradiation from the central star can produce a gap in the disk at a few AU, preventing planets outside the gap from migrating down to the star. This would result in an excess of systems with planets at or just outside the photoevaporation radius.

Original languageEnglish (US)
Pages (from-to)L143-L146
JournalAstrophysical Journal
Issue number2 II
StatePublished - Mar 10 2003


  • Accretion, accretion disks
  • Planetary systems: formation
  • Planetary systems: protoplanetary disks
  • Planets and satellites: formation
  • Solar system: formation

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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