debris disk


Also found in: Wikipedia.
Related to debris disk: accretion disk, Molecular clouds

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 ?
The ring-like debris disk around the young star HR 4796A is one of the best- and most-studied debris system outside the solar system, but new observations made using the Hubble Space Telescope revealed a much larger and very complex structure of dust around the star.
Though long hypothesized, the first evidence for a debris disk around any star was uncovered in 1983 with NASA's Infrared Astronomical Satellite.
As the chunks in a debris disk collide and dissipate energy, the ever-finer remains will settle into a thin sheet like the rings of Saturn.
Because the planet and debris disk interact gravitationally, the system provides astronomers with an ideal laboratory to test theories on the formation of planetary systems.
Scientists started to consider the possibility that Earth's water came only from comets originating in the Kuiper belt, an icy debris disk in the outer solar system that includes Pluto (SN: 10/19/13, p.
Future observations of the planet's orbital motion and the primary star's debris disk may help answer that question.
It will image and obtain spectra of massive giant planets around nearby stars, to determine their atmospheric properties and their relation to debris disk structure.
When stars form, there remains around them for the first few millions of years at least, a debris disk made up of gas and dust.
That's a lot of time and attention on one nearby star and its debris disk.
Spectroscopic measurements reveal heavy elements in the white dwarf's atmosphere, too, and the star has a dusty debris disk, further adding to evidence that the "pollution" comes from a torn-up world.
The second planetary environment, known as a debris disk, tends to be older than 5 million years, possesses little or no gas, and contains belts of rocky or icy debris that resemble the asteroid and Kuiper belts found in our own solar system.