Abstract
Debris disks are found around some 15% of main sequencestars and their dust is thought to be continuallyreplenished in collisions between planetesimals inextrasolar Kuiper belts.While they were discovered in 1984 by IRAS, it is onlywith more recent imaging that their true nature has beenrevealed. This paper discusses recent debris disk images andtheir impact on our understanding of extrasolar systems.Importantly these images confirm the extrasolar Kuiper belthypothesis for most (but not all) debris diskcandidates and show that the planetesimals within thesedisks must have grown to at least a few km.Asymmetries in imaged disk structures also provide informationabout the planetary systems orbiting inside these planetesimalbelts. The impact of debris disk studies on our understandingof the evolution of our own Kuiper belt, as well as theirpotential to solve puzzles such as the origin of the missingmass and the outer edge of the Kuiper belt, is alsodiscussed.
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Wyatt, M.C., Holland, W.S., Greaves, J.S. et al. Extrasolar Analogues to the Kuiper Belt. Earth, Moon, and Planets 92, 423–434 (2003). https://doi.org/10.1023/B:MOON.0000031956.05551.b8
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DOI: https://doi.org/10.1023/B:MOON.0000031956.05551.b8