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Effects of non-Kozai mutual inclinations on two-planet system stability through all phases of stellar evolution
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Veras, Dimitri, Georgakarakos, Nikolaos, Gänsicke, B. T. (Boris T.) and Dobbs-Dixon, Ian (2018) Effects of non-Kozai mutual inclinations on two-planet system stability through all phases of stellar evolution. Monthly Notices of the Royal Astronomical Society, 481 (2). pp. 2180-2188. doi:10.1093/mnras/sty2409 ISSN 0035-8711.
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WRAP-effects-non-Kozai-mutual-inclinations-two-planet-system-Gaensicke-2018.pdf - Accepted Version - Requires a PDF viewer. Download (3288Kb) | Preview |
Official URL: http://dx.doi.org/10.1093/mnras/sty2409
Abstract
Previous full-lifetime simulations of single-star multi-planet systems across all phases of stellar evolution have predominately assumed coplanar or nearly coplanar orbits. Here we assess the consequences of this assumption by removing it and exploring the effect of giant branch mass loss on the stability of two-planet systems with small to moderate non-Kozai (<40º) relative inclinations. We run nearly 104 simulations over 14 Gyr for F-star, A-star and B-star planet hosts, incorporating main-sequence stellar masses of 1.5, 2.0, 2.5, 3.0 and 5.0 solar masses, and initial planetary semimajor axis ratios that straddle their three-dimensional Hill stability limits. We find that the near-coplanar assumption can approximate well the stability frequencies and critical separations found for higher inclinations, except around strong mean-motion commensurabilities. Late instabilities – after the star has become a white dwarf – occur throughout the explored mutual inclination range. Consequently, non-Kozai mutual inclination should not be used as a predictive orbital proxy for determining which white dwarf multi-planet systems discovered by Gaia should represent high-priority follow-up targets for the detection of metal pollution and planetary debris discs.
| 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): | Stars -- Evolution, Celestial mechanics, Extrasolar planets, Orbits, White dwarf stars, Asymptotic giant branch stars | |||||||||
| Journal or Publication Title: | Monthly Notices of the Royal Astronomical Society | |||||||||
| Publisher: | Oxford University Press | |||||||||
| ISSN: | 0035-8711 | |||||||||
| Official Date: | 1 December 2018 | |||||||||
| Dates: |
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| Volume: | 481 | |||||||||
| Number: | 2 | |||||||||
| Page Range: | pp. 2180-2188 | |||||||||
| DOI: | 10.1093/mnras/sty2409 | |||||||||
| 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, Boris T Gänsicke, Ian Dobbs-Dixon; Effects of non-Kozai mutual inclinations on two-planet system stability through all phases of stellar evolution, Monthly Notices of the Royal Astronomical Society, Volume 481, Issue 2, 1 December 2018, Pages 2180–2188, https://doi.org/10.1093/mnras/sty2409 is available online at: https://doi.org/10.1093/mnras/sty2409 | |||||||||
| Access rights to Published version: | Restricted or Subscription Access | |||||||||
| Date of first compliant deposit: | 24 September 2018 | |||||||||
| Date of first compliant Open Access: | 25 September 2018 | |||||||||
| RIOXX Funder/Project Grant: |
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