Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 464, Issue 3, Pages 2557-2564Publisher
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stw2585
Keywords
methods: numerical; celestial mechanics; planets and satellites: dynamical evolution and stability
Categories
Funding
- Royal Society [IE140641]
- NASA [NNX13A124G, NNX10AH40G, 1312645088477, NNX16AD69G]
- BSF [2012384]
- Smithsonian CGPS/Pell Grant program
- European Union through ERC grant [320964]
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Roughly 1000 white dwarfs are known to be polluted with planetary material, and the progenitors of this material are typically assumed to be asteroids. The dynamical architectures which perturb asteroids into white dwarfs are still unknown, but may be crucially dependent on moons liberated from parent planets during post-main-sequence gravitational scattering. Here, we trace the fate of these exomoons, and show that they more easily achieve deep radial incursions towards the white dwarf than do scattered planets. Consequently, moons are likely to play a significant role in white dwarf pollution, and in some cases may be the progenitors of the pollution itself.
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