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Short-term stability of particles in the WD J0914+1914 white dwarf planetary system
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Zotos, Euaggelos E., Veras, Dimitri, Saeed, Tareq and Darriba, Luciano A. (2020) Short-term stability of particles in the WD J0914+1914 white dwarf planetary system. Monthly Notices of the Royal Astronomical Society, 497 (4). pp. 5171-5181. doi:10.1093/mnras/staa2309 ISSN 1745-3933.
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Official URL: https://doi.org/10.1093/mnras/staa2309
Abstract
Nearly all known white dwarf planetary systems contain detectable rocky debris in the stellar photosphere. A glaring exception is the young and still evolving white dwarf WD J0914+1914, which instead harbours a giant planet and a disc of pure gas. The stability boundaries of this disc and the future prospects for this white dwarf to be polluted with rocks depend upon the mass and orbit of the planet, which are only weakly constrained. Here, we combine an ensemble of plausible planet orbits and masses to determine where observers should currently expect to find the outer boundary of the gas disc. We do so by performing a sweep of the entire plausible phase space with short-term numerical integrations. We also demonstrate that particle-star collisional trajectories, which would lead to the (unseen) signature of rocky metal pollution, occupy only a small fraction of the phase space, mostly limited to particle eccentricities above 0.75. Our analysis reveals that a highly inflated planet on a near-circular orbit is the type of planet which is most consistent with the current observations.
Item Type: | Journal Article | ||||||||||||
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Subjects: | Q Science > QB Astronomy | ||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||||
Library of Congress Subject Headings (LCSH): | Asteroids, Protoplanetary disks, White dwarf stars | ||||||||||||
Journal or Publication Title: | Monthly Notices of the Royal Astronomical Society | ||||||||||||
Publisher: | Oxford University Press | ||||||||||||
ISSN: | 1745-3933 | ||||||||||||
Official Date: | October 2020 | ||||||||||||
Dates: |
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Volume: | 497 | ||||||||||||
Number: | 4 | ||||||||||||
Page Range: | pp. 5171-5181 | ||||||||||||
DOI: | 10.1093/mnras/staa2309 | ||||||||||||
Status: | Peer Reviewed | ||||||||||||
Publication Status: | Published | ||||||||||||
Reuse Statement (publisher, data, author rights): | This is a pre-copyedited, author-produced version of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The version of record Euaggelos E Zotos, Dimitri Veras, Tareq Saeed, Luciano A Darriba, Short-term stability of particles in the WD J0914+1914 white dwarf planetary system, Monthly Notices of the Royal Astronomical Society, Volume 497, Issue 4, October 2020, Pages 5171–5181, is available online at: https://doi.org/10.1093/mnras/staa2309 | ||||||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||||||
Copyright Holders: | © 2020 The Author(s) | ||||||||||||
Date of first compliant deposit: | 7 September 2020 | ||||||||||||
Date of first compliant Open Access: | 8 September 2020 | ||||||||||||
RIOXX Funder/Project Grant: |
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