Results 341 to 350 of about 552,140 (371)
Some of the next articles are maybe not open access.
Annual Review of Astronomy and Astrophysics, 2008
Circumstellar dust exists around several hundred main sequence stars. For the youngest stars, that dust could be a remnant of the protoplanetary disk. Mostly it is inferred to be continuously replenished through collisions between planetesimals in belts analogous to the Solar System's asteroid and Kuiper belts, or in collisions between growing ...
Mark C Wyatt
exaly +2 more sources
Circumstellar dust exists around several hundred main sequence stars. For the youngest stars, that dust could be a remnant of the protoplanetary disk. Mostly it is inferred to be continuously replenished through collisions between planetesimals in belts analogous to the Solar System's asteroid and Kuiper belts, or in collisions between growing ...
Mark C Wyatt
exaly +2 more sources
Giant Impacts and Debris Disks
Proceedings of the International Astronomical Union, 2012AbstractDuring the last stage of terrestrial planet formation, Mars-sized protoplanets often collides with each other. Our high-resolution impact simulations show that such giant impacts produce a significant amount of fragments within the terrestrial planet region. These ejected fragments form a hot debris disk around the central star.
H. Genda, H. Kobayashi, E. Kokubo
openaire +1 more source
Planetary Perturbers in Debris Disks
Earth, Moon, and Planets, 2003Neptune dominates the dynamics of the Kuiper Belt. By examining images of debris disks around other stars, we may be able to infer what kinds of planets shape the outer edges of other planetary systems. The last few years have seen a burst of progress in the modeling of azimuthal structures in debris disks created by planetary perturbers; new models ...
openaire +1 more source
Searching for gas in debris disks
2020A debris disk is commonly described as a second generation circumstellar disk com- posed of dust grains, planetesimals and possibly already formed giant planets. It was long thought that debris disks were systems fully depleted of gas, but in the last few years the presence of gas has been detected in a increasing number of them.
openaire +1 more source
Dynamical Processes in Debris Disks
EAS Publications Series, 2010Debris disks are dusty and/or gasous disk that are viewed in scattered light and thermal emission around stars around 10 7 –10 8 yr. It is well known that the dust in these system is not primodial. It is short lived and must be continuously replenished by colliding planetesimals.
openaire +1 more source
Reducing environmental plastic pollution by designing polymer materials for managed end-of-life
Nature Reviews Materials, 2021Kara Lavender, Ramani Narayan
exaly

