dc.contributor.author Winter, AJ dc.contributor.author Clarke, CJ dc.contributor.author Rosotti, G dc.contributor.author Booth, RA dc.date.accessioned 2018-01-22T12:17:14Z dc.date.available 2018-01-22T12:17:14Z dc.date.issued 2018 dc.identifier.issn 0035-8711 dc.identifier.uri https://www.repository.cam.ac.uk/handle/1810/270886 dc.description.abstract The majority of stars form in a clustered environment. This has an impact on the evolution of surrounding protoplanetary discs (PPDs) due to either photoevaporation or tidal truncation. Consequently, the development of planets depends on formation environment. Here we present the first thorough investigation of tidally induced angular momentum loss in PPDs in the distant regime, partly motivated by claims in the literature for the importance of distant encounters in disc evolution. We employ both theoretical predictions and dynamical/hydrodynamical simulations in 2D and 3D. Our theoretical analysis is based on that of Ostriker (1994) and leads us to conclude that in the limit that the closest approach distance $x_{min} \gg r$, the radius of a particle ring, the fractional change in angular momentum scales as $(x_{min}/r)^{-5}$. This asymptotic limit ensures that the cumulative effect of distant encounters is minor in terms of its influence on disc evolution. The angular momentum transfer is dominated by the $m=2$ Lindblad resonance for closer encounters and by the $m=1$, $\omega = 0$ Lindblad resonance at large $x_{min}/r$. We contextualise these results by comparing expected angular momentum loss for the outer edge of a PPD due to distant and close encounters. Contrary to the suggestions of previous works we do not find that distant encounters contribute significantly to angular momentum loss in PPDs. We define an upper limit for closest approach distance where interactions are significant as a function of arbitrary host to perturber mass ratio $M_2/M_1$. dc.publisher Oxford University Press (OUP) dc.title Protoplanetary disc response to distant tidal encounters in stellar clusters dc.type Article prism.endingPage 2325 prism.issueIdentifier 2 prism.publicationDate 2018 prism.publicationName Monthly Notices of the Royal Astronomical Society prism.startingPage 2314 prism.volume 475 dc.identifier.doi 10.17863/CAM.17831 dcterms.dateAccepted 2018-01-02 rioxxterms.versionofrecord 10.1093/MNRAS/STY012 rioxxterms.version AM rioxxterms.licenseref.uri http://www.rioxx.net/licenses/all-rights-reserved rioxxterms.licenseref.startdate 2018-04-01 dc.contributor.orcid Winter, Andrew [0000-0002-7501-9801] dc.contributor.orcid Clarke, Catherine [0000-0003-4288-0248] dc.contributor.orcid Rosotti, Giovanni [0000-0003-4853-5736] dc.contributor.orcid Booth, Richard [0000-0002-0364-937X] dc.identifier.eissn 1365-2966 dc.publisher.url http://dx.doi.org/10.1093/mnras/sty012 rioxxterms.type Journal Article/Review pubs.funder-project-id European Research Council (341137) pubs.funder-project-id Science and Technology Facilities Council (1644105) pubs.funder-project-id Science and Technology Facilities Council (ST/N000927/1) cam.issuedOnline 2018-01-09 rioxxterms.freetoread.startdate 2019-01-09
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