Evolved Planetary Systems: Debris Discs and Metal Polluted White Dwarfs

Details Evolved Planetary Systems: Debris Discs and Metal Polluted White Dwarfs Evolved Planetary Systems: Debris Discs and Metal Polluted White Dwarfs

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ess.....2.1505b&link_type=abstract

American Astronomical Society, ESS meeting #2, #15.05

Astronomy and Astrophysics

Astronomy

Scientific paper

Some of the most extreme planetary systems are those around evolved stars. There are as yet no planet detections around white dwarfs, but there are observational signatures potentially associated with evolved planetary systems. Both metal lines in white dwarf atmospheres and hot, dust discs around some metal polluted white dwarfs may be signatures of material scattered inwards from an evolved planetary system. I present models that provide the link between these observational signatures and main sequence planetary systems. I show that the altered dynamics in a debris disc, after stellar mass loss on the giant branches, can scatter sufficient material from an outer belt, in order to explain the observations. The architecture of the inner planetary system determines whether this material can end up on star-grazing orbits. I make use of analytical dynamics and the circular restricted three-body problem to place constraints on the structure of planetary systems capable of scattering particles from an outer belt onto star-grazing orbits. This analytical dynamics is applicable to any system with an outer belt and inner planets, including our solar system and stars with warm, dust discs.

Affiliated with

Also associated with

No associations

Rating

Evolved Planetary Systems: Debris Discs and Metal Polluted White Dwarfs does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Evolved Planetary Systems: Debris Discs and Metal Polluted White Dwarfs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evolved Planetary Systems: Debris Discs and Metal Polluted White Dwarfs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-832771