Sentences with phrase «in debris discs»
In our models we consider collisions, direct radiation pressure, and drag forces, i.e. the actual physical processes operating in debris discs.
https://arxiv.org/
The image shows a spiral - like structure which we think is related to collisions between dust grains in the debris disc.»
Not exact matches
The moon is thought to have formed from a disc of debris left when a giant object hit the Earth 4.5 billion years ago, very early in Earth's history.
The Moon is thought to have formed from a disc of debris left when a giant object hit Earth 4.5 billion years ago, very early in Earth's history.
In 1984, Beta Pictoris became the first star known to be orbited by a dusty disc of debris, called a circumstellar disc.
By using models of how planets shape a debris disc, the team found that «eccentric» versions of the giant planets in the outer solar system could explain the observed properties of the ring.
However, recent observations have confirmed the presence of a non-negligible amount of cold gas in the circumstellar (CS) debris discs around young main - sequence stars.This cold gas has been suggested to be related to the outgassing of planetesimals and cometary - like objects.
The aim of this paper is to provide robust numbers for the incidence of debris discs around FGK stars in the solar neighbourhood.
The majority of these systems are unresolved and analysis of the dust properties is limited by the lack of information regarding the dust location.vThe Herschel DUNES key program is observing 133 nearby, Sun - like stars (< 20 pc, FGK spectral type) in a volume... ▽ More Dusty debris discs around main sequence stars are thought to be the result of continuous collisional grinding of planetesimals in the system.
This hot gas is detected in at least ~ 80 %, of edge - on cold - gas - bearing debris discs, while in only ~ 10 % of the discs seen close to face - on.
The discs are found to be well aligned with the stellar equators, as in the case... ▽ More Many nearby main - sequence stars have been searched for debris using the far - infrared Herschel satellite, within the DEBRIS, DUNES and Guaranteed - Time Key Prodebris using the far - infrared Herschel satellite, within the DEBRIS, DUNES and Guaranteed - Time Key ProDEBRIS, DUNES and Guaranteed - Time Key Projects.
Abstract: Dusty debris discs around main sequence stars are thought to be the result of continuous collisional grinding of planetesimals in the system.