The dynamical structure of HR 8799’s inner debris disk
Article
Article Title | The dynamical structure of HR 8799’s inner debris disk |
---|---|
ERA Journal ID | 2103 |
Article Category | Article |
Authors | Contro, Bruna (Author), Wittenmyer, Rob (Author), Horner, Jonti (Author) and Marshall, Jonathan P. (Author) |
Journal Title | Origins of Life and Evolution of Biospheres |
Origins of Life and Evolution of the Biosphere | |
Journal Citation | 45 (1-2), pp. 41-49 |
Number of Pages | 9 |
Year | 2015 |
Place of Publication | Netherlands |
ISSN | 0169-6149 |
0302-1688 | |
1573-0875 | |
Digital Object Identifier (DOI) | https://doi.org/10.1007/s11084-015-9405-x |
Web Address (URL) | http://link.springer.com/journal/11084/45/1/page/1 |
Abstract | The HR 8799 system, with its four giant planets and two debris belts, has an architecture closely mirroring that of our Solar system where the inner, warm asteroid belt and outer, cool Edgeworth-Kuiper belt bracket the giant planets. As such, it is a valuable laboratory for examining exoplanetary dynamics and debris disk-exoplanet interactions. Whilst the outer debris belt of HR 8799 has been well resolved by previous observations, the spatial extent of the inner disk remains unknown. This leaves a significant question mark over both the location of the planetesimals responsible for producing the belt's visible dust and the physical properties of those grains. We have performed the most extensive simulations to date of the inner, unresolved debris belt around HR 8799, using UNSW Australia's Katana supercomputing facility to follow the dynamical evolution of a model inner disk comprising 300,298 particles for a period of 60 million years. These simulations have enabled the characterisation of the extent and structure of the inner disk in detail, and will in future allow us to provide a first estimate of the small-body impact rate and water delivery |
Keywords | stars: individual: HR 8799; stars: circumstellar matter; planetary systems: minor bodies; methods: n-body simulations; astrobiology |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
510101. Astrobiology | |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | University of New South Wales |
Computational Engineering and Science Research Centre | |
Event | Origins of Life and Evolution of Biospheres |
Institution of Origin | University of Southern Queensland |
Event Details | Origins of Life and Evolution of Biospheres |
https://research.usq.edu.au/item/q362q/the-dynamical-structure-of-hr-8799-s-inner-debris-disk
Download files
1663
total views160
total downloads0
views this month0
downloads this month