debris disk

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Related to Debris disks: 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.
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References in periodicals archive ?
The WIETR report said that incorporating the advanced instrument - which is designed to shield light from celestial bodies to make planet and debris disks detection better - is "certain to present risks to the primary mission."
The SEEDS survey (17) is organized into two separate classes, planets and disks, each further subdivided into categories, including nearby stars (NS), moving groups (MG), debris disks (DD), young stellar objects (YSOs) (containing protoplanetary and transitional disks), and open clusters (OC).
One thing astronomers have recently learned about circumstellar debris disks is that their structure, and amount of dust, is incredibly diverse and may be related to the locations and masses of planets in those systems.
Hubble images of debris disks around stars on top, artist's interpretation of their shape on the bottom.
Remi Soummer, of the Space Telescope Science Institute (STScI) in Baltimore, Md., and his team reanalyzed the archived images and found debris disks and even determined their shapes.
This will include imaging molecular clouds and star-forming clusters, studying the debris disks around stars, direct imaging of planets, and spectroscopic examination of planetary transits.
But around older stars, traces of gas within the debris disks may subsist but fall below the limits of detection, Lyra says.
Other topics of the 85 papers include mass distribution and luminosity functions, white dwarfs excepting from the Hyades, the angular momentum of isolated white dwarf stars, the link between RS Ophiuchi and type Ia supernovae, creating white dwarf photospheres in the laboratory, and the frequency of debris disks at white dwarfs.
The 41 refereed versions of invited and contributed talks cover dust around evolved stars and supernovae; dust in proto-planetary and debris disks, and substeller object atmospheres; dust in the solar system; dust in the Milky Way and other galaxies; dust in the early universe; dust physics and chemistry; laboratory studies of dust; and dust evolution and models.
These so-called debris disks are made up of asteroid-like bits of leftover rock that never made it into rocky planets.
Many planets that have been found through direct imaging have been in systems that had debris disks, and now we know the dust could be indicators of undiscovered worlds," Tiffany Meshkat, lead author of the study and assistant research scientist at IPAC/Caltech in Pasadena, California, said in a statement Wednesday on NASA's website.
Unlike protoplanetary disks, where gas and dust are coalescing into new planets, debris disks show up after planets have formed and the protoplanetary disk has been blown away.