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Binary star influence on post-main-sequence multi-planet stability
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Veras, Dimitri, Georgakarakos, Nikolaos, Dobbs-Dixon, Ian and Gänsicke, B. T. (Boris T.) (2017) Binary star influence on post-main-sequence multi-planet stability. Monthly Notices of the Royal Astronomical Society, 465 (2). pp. 2053-2059. doi:10.1093/mnras/stw2699 ISSN 0035-8711.
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Official URL: http://dx.doi.org/10.1093/mnras/stw2699
Abstract
Nearly every star known to host planets will become a white dwarf, and nearly 100 planet-hosts are now known to be accompanied by binary stellar companions. Here, we determine how a binary companion triggers instability in otherwise unconditionally stable single-star two-planet systems during the giant branch and white dwarf phases of the planet host. We perform about 700 full-lifetime (14 Gyr) simulations with A0 and F0 primary stars and secondary K2 companions, and identify the critical binary distance within which instability is triggered at any point during stellar evolution. We estimate this distance to be about seven times the outer planet separation, for circular binaries. Our results help characterize the fates of planetary systems, and in particular which ones might yield architectures that are conducive to generating observable heavy metal pollution in white dwarf atmospheres.
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, White dwarfs, Celestial mechanics | ||||||||
Journal or Publication Title: | Monthly Notices of the Royal Astronomical Society | ||||||||
Publisher: | Oxford University Press | ||||||||
ISSN: | 0035-8711 | ||||||||
Official Date: | 21 February 2017 | ||||||||
Dates: |
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Volume: | 465 | ||||||||
Number: | 2 | ||||||||
Page Range: | pp. 2053-2059 | ||||||||
DOI: | 10.1093/mnras/stw2699 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 20 October 2016 | ||||||||
Date of first compliant Open Access: | 20 October 2016 | ||||||||
Funder: | Seventh Framework Programme (European Commission) (FP7), European Research Council (ERC) | ||||||||
Grant number: | FP/2007-2013 (FP7), Grant no. 320964 WDTracer (ERC) |
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