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GW Ori : circumtriple rings and planets
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Smallwood, Jeremy L., Nealon, Rebecca, Chen, Cheng, Martin, Rebecca G., Bi, Jiaqing, Dong, Ruobing and Pinte, Christophe (2021) GW Ori : circumtriple rings and planets. Monthly Notices of the Royal Astronomical Society, 508 (1). pp. 392-407. doi:10.1093/mnras/stab2624 ISSN 1365-2966.
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Official URL: https://doi.org/10.1093/mnras/stab2624
Abstract
GW Ori is a hierarchical triple star system with a misaligned circumtriple protoplanetary disc. Recent Atacama Large Millimeter/submillimeter Array observations have identified three dust rings with a prominent gap at $100\, \rm au$ and misalignments between each of the rings. A break in the gas disc may be driven by the torque from either the triple star system or a planet that is massive enough to carve a gap in the disc. Once the disc is broken, the rings nodally precess on different time-scales and become misaligned. We investigate the origins of the dust rings by means of N-body integrations and 3D hydrodynamic simulations. We find that for observationally motivated parameters of protoplanetary discs, the disc does not break due to the torque from the star system. We suggest that the presence of a massive planet (or planets) in the disc separates the inner and outer discs. We conclude that the disc breaking in GW Ori is likely caused by undetected planets – the first planet(s) in a circumtriple orbit.
| 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): | Accretion (Astrophysics), Stars, Disks (Astrophysics), Astrophysics | |||||||||||||||||||||
| Journal or Publication Title: | Monthly Notices of the Royal Astronomical Society | |||||||||||||||||||||
| Publisher: | Oxford University Press (OUP) | |||||||||||||||||||||
| ISSN: | 1365-2966 | |||||||||||||||||||||
| Official Date: | November 2021 | |||||||||||||||||||||
| Dates: |
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| Volume: | 508 | |||||||||||||||||||||
| Number: | 1 | |||||||||||||||||||||
| Page Range: | pp. 392-407 | |||||||||||||||||||||
| DOI: | 10.1093/mnras/stab2624 | |||||||||||||||||||||
| Status: | Peer Reviewed | |||||||||||||||||||||
| Publication Status: | Published | |||||||||||||||||||||
| Reuse Statement (publisher, data, author rights): | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society | |||||||||||||||||||||
| Access rights to Published version: | Restricted or Subscription Access | |||||||||||||||||||||
| Date of first compliant deposit: | 29 October 2021 | |||||||||||||||||||||
| Date of first compliant Open Access: | 1 November 2021 | |||||||||||||||||||||
| RIOXX Funder/Project Grant: |
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