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High-resolution resonant portraits of a single-planet white dwarf system
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Veras, Dimitri, Georgakarakos, Nikolaos and Dobbs-Dixon, Ian (2023) High-resolution resonant portraits of a single-planet white dwarf system. Monthly Notices of the Royal Astronomical Society, 518 (3). pp. 4537-4550. doi:10.1093/mnras/stac3274 ISSN 1745-3933.
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Official URL: https://doi.org/10.1093/mnras/stac3274
Abstract
The dynamical excitation of asteroids due to mean motion resonant interactions with planets is enhanced when their parent star leaves the main sequence. However, numerical investigation of resonant outcomes within post-main-sequence simulations is computationally expensive, limiting the extent to which detailed resonant analyses have been performed. Here, we combine the use of a high-performance computer cluster and the general semianalytical libration width formulation of Gallardo et al. (2021) in order to quantify resonant stability, strength and variation instigated by stellar evolution for a single-planet system containing asteroids on both crossing and non-crossing orbits. We find that resonant instability can be accurately bound with only main-sequence values by computing a maximum libration width as a function of asteroid longitude of pericentre. We also quantify the relative efficiency of mean motion resonances of different orders to stabilize versus destabilize asteroid orbits during both the giant branch and white dwarf phases. The 4:1, 3:1 and 2:1 resonances represent efficient polluters of white dwarfs, and even when in the orbit-crossing regime, both the 4:3 and 3:2 resonances can retain small reservoirs of asteroids in stable orbits throughout giant branch and white dwarf evolution. This investigation represents a preliminary step in characterising how simplified extrasolar Kirkwood gap structures evolve beyond the main-sequence.
Item Type: | Journal Article | ||||||||
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Subjects: | Q Science > QB Astronomy | ||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||
SWORD Depositor: | Library Publications Router | ||||||||
Library of Congress Subject Headings (LCSH): | Kuiper Belt , Asteroids , Celestial mechanics , White dwarf stars | ||||||||
Journal or Publication Title: | Monthly Notices of the Royal Astronomical Society | ||||||||
Publisher: | Oxford University Press | ||||||||
ISSN: | 1745-3933 | ||||||||
Official Date: | January 2023 | ||||||||
Dates: |
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Volume: | 518 | ||||||||
Number: | 3 | ||||||||
Page Range: | pp. 4537-4550 | ||||||||
DOI: | 10.1093/mnras/stac3274 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Reuse Statement (publisher, data, author rights): | This is a pre-copyedited, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The version of record Dimitri Veras, Nikolaos Georgakarakos, Ian Dobbs-Dixon, High-resolution resonant portraits of a single-planet white dwarf system, Monthly Notices of the Royal Astronomical Society, Volume 518, Issue 3, January 2023, Pages 4537–4550, is available online at:https://doi.org/10.1093/mnras/stac3274 | ||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||
Date of first compliant deposit: | 15 December 2022 | ||||||||
Date of first compliant Open Access: | 16 December 2022 | ||||||||
RIOXX Funder/Project Grant: |
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