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.
References in periodicals archive ?
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.