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Relating binary-star planetary systems to central configurations
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Veras, Dimitri (2016) Relating binary-star planetary systems to central configurations. Monthly Notices of the Royal Astronomical Society, 462 (3). pp. 3368-3375. doi:10.1093/mnras/stw1873 ISSN 0035-8711.
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Official URL: http://dx.doi.org/10.1093/mnras/stw1873
Abstract
Binary-star exoplanetary systems are now known to be common, for both wide and close binaries. However, their orbital evolution is generally unsolvable. Special cases of the N-body problem which are in fact completely solvable include dynamical architectures known as central configurations. Here, I utilize recent advances in our knowledge of central configurations to assess the plausibility of linking them to coplanar exoplanetary binary systems. By simply restricting constituent masses to be within stellar or substellar ranges characteristic of planetary systems, I find that (i) this constraint reduces by over 90 per cent the phase space in which central configurations may occur, (ii) both equal-mass and unequal-mass binary stars admit central configurations, (iii) these configurations effectively represent different geometrical extensions of the Sun-Jupiter-Trojan-like architecture, (iv) deviations from these geometries are no greater than ten degrees, and (v) the deviation increases as the substellar masses increase. This study may help restrict future stability analyses to architectures which resemble exoplanetary systems, and might hint at where observers may discover dust, asteroids and/or planets in binary star systems.
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): | Celestial mechanics, Stars, Asteroids, Kinematics, Dynamics, Planets, Satellites, Protoplanetary disks | ||||||||
Journal or Publication Title: | Monthly Notices of the Royal Astronomical Society | ||||||||
Publisher: | Oxford University Press | ||||||||
ISSN: | 0035-8711 | ||||||||
Official Date: | 1 November 2016 | ||||||||
Dates: |
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Volume: | 462 | ||||||||
Number: | 3 | ||||||||
Page Range: | pp. 3368-3375 | ||||||||
DOI: | 10.1093/mnras/stw1873 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 1 August 2016 | ||||||||
Date of first compliant Open Access: | 1 August 2016 | ||||||||
Funder: | Seventh Framework Programme (European Commission) (FP7) | ||||||||
Grant number: | (BP/2007-2013)/ARC Grant Agreement n. 320964 (WDTracer) | ||||||||
Is Part Of: | ERC grant number 320964 |
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