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Linking the formation and fate of exo-Kuiper belts within solar system analogues

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Veras, Dimitri, Reichert, Katja, Dotti, Francesco Flammini, Cai, Maxwell X., Mustill, Alexander J., Shannon, Andrew, McDonald, Catriona H., Zwart, Simon Portegies, Kouwenhoven, M. B. N. and Spurzem, Rainer (2020) Linking the formation and fate of exo-Kuiper belts within solar system analogues. Monthly Notices of the Royal Astronomical Society, 493 (4). pp. 5062-5078. doi:10.1093/mnras/staa559 ISSN 1365-2966.

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Official URL: https://doi.org/10.1093/mnras/staa559

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Abstract

Abstract Escalating observations of exo-minor planets and their destroyed remnants both passing through the solar system and within white dwarf planetary systems motivate an understanding of the orbital history and fate of exo-Kuiper belts and planetesimal discs. Here we explore how the structure of a 40 − 1000 au annulus of planetesimals orbiting inside of a solar system analogue that is itself initially embedded within a stellar cluster environment varies as the star evolves through all of its stellar phases. We attempt this computationally challenging link in four parts: (1) by performing stellar cluster simulations lasting 100 Myr, (2) by making assumptions about the subsequent quiescent 11 Gyr main-sequence evolution, (3) by performing simulations throughout the giant branch phases of evolution, and (4) by making assumptions about the belt’s evolution during the white dwarf phase. Throughout these stages, we estimate the planetesimals’ gravitational responses to analogues of the four solar system giant planets, as well as to collisional grinding, Galactic tides, stellar flybys, and stellar radiation. We find that the imprint of stellar cluster dynamics on the architecture of ≳ 100 km-sized exo-Kuiper belt planetesimals is retained throughout all phases of stellar evolution unless violent gravitational instabilities are triggered either (1) amongst the giant planets, or (2) due to a close (≪103 au) stellar flyby. In the absence of these instabilities, these minor planets simply double their semimajor axis while retaining their primordial post-cluster eccentricity and inclination distributions, with implications for the free-floating planetesimal population and metal-polluted white dwarfs.

Item Type: Journal Article
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): Kuiper Belt, Asteroids, White dwarf stars
Journal or Publication Title: Monthly Notices of the Royal Astronomical Society
Publisher: Oxford University Press (OUP)
ISSN: 1365-2966
Official Date: April 2020
Dates:
DateEvent
April 2020Published
3 March 2020Available
19 February 2020Accepted
Volume: 493
Number: 4
Page Range: pp. 5062-5078
DOI: 10.1093/mnras/staa559
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 Dimitri Veras, Katja Reichert, Francesco Flammini Dotti, Maxwell X Cai, Alexander J Mustill, Andrew Shannon, Catriona H McDonald, Simon Portegies Zwart, M B N Kouwenhoven, Rainer Spurzem, Linking the formation and fate of exo-Kuiper belts within solar system analogues, Monthly Notices of the Royal Astronomical Society, , staa559 is available online at: https://doi.org/10.1093/mnras/staa559
Access rights to Published version: Open Access (Creative Commons)
Date of first compliant deposit: 12 March 2020
Date of first compliant Open Access: 19 March 2020
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
ST/P003850/1[STFC] Science and Technology Facilities Councilhttp://dx.doi.org/10.13039/501100000271
SP 345/20-1[DFG] Deutsche Forschungsgemeinschafthttp://dx.doi.org/10.13039/501100001659
11573004[NSFC] National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809
2014.0017Knut och Alice Wallenbergs Stiftelsehttp://dx.doi.org/10.13039/501100004063
2017-04945VetenskapsrådetUNSPECIFIED
669416H2020 European Research Councilhttp://dx.doi.org/10.13039/100010663
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