Results 171 to 180 of about 7,087 (197)

Evolution of Debris Disks

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

Debris disks

open access: yesEAS Publications Series, 2008
Debris disks are faint disks surrounding main-sequence stars. Their occurrence at ages beyond the typical dissipation time scales of YSO disks suggests that they are secondary in nature, being refurbished by the collisions of bodies of not-so-well known ...
Ch. Waelkens
openaire   +2 more sources

Dynamical Processes in Debris Disks

open access: yesEAS Publications Series, 2010
Debris 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.
H. Beust
openaire   +2 more sources

Searching for debris disks around isolated pulsars

open access: yesPlanetary and Space Science, 2014
Different pieces of observational evidence suggest the existence of disks around isolated neutron stars. Such disks could be formed from supernova fallback when neutron stars are born in core-collapse supernova explosions.
Zhongxiang Wang
exaly   +1 more source

From Protoplanetary to Debris Disks

2002
We discuss the physical difference between protoplanetary and debris (Vega-like) disks and consider the course of evolution which leads from the first to the latter. We discuss a simple evolutionary model for debris disks and predict 20μm fluxes for future observations with VISIR.
Dominik, C., Dullemond, C.P.
openaire   +3 more sources

Signatures of planets in protoplanetary and debris disks

open access: yesPlanetary and Space Science, 2007
We discuss selected possibilities to detect planets in circumstellar disks. We consider the search for characteristic signatures in these disks caused by the interaction of giant planets with the disk as the most promising approach. Numerical simulations
S Wolf   +2 more
exaly   +1 more source

Giant Impacts and Debris Disks

Proceedings of the International Astronomical Union, 2012
AbstractDuring 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

Home - About - Disclaimer - Privacy