debris disk

(redirected from Circumstellar discs)

debris disk

n.
A thin disk of material, orbiting a young main-sequence star, that is mostly dust thought to be produced by collisions of small bodies like asteroids during the early formation of planets.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
DISK explores known, young planetary systems and their circumstellar discs to study the initial conditions of planetary formation and the evolution of planetary architectures.
Circumstellar discs are an essential ingredient in the formation process of low-mass stars such as our Sun.
These are of particular interest as the mechanisms which lead to the formation and decay of the circumstellar discs, which produce the characteristic emission lines, are poorly understood.