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dc.contributor.authorTriaud, Amaury H. M. J.
dc.contributor.authorNeveu-VanMalle, Marion
dc.contributor.authorLendl, Monika
dc.contributor.authorAnderson, David R.
dc.contributor.authorCollier Cameron, Andrew
dc.contributor.authorDelrez, Laetitia
dc.contributor.authorDoyle, Amanda
dc.contributor.authorGillon, Michaël
dc.contributor.authorHellier, Coel
dc.contributor.authorJehin, Emmanuël
dc.contributor.authorMaxted, Pierre F. L.
dc.contributor.authorSégransan, Damien
dc.contributor.authorSmalley, Barry
dc.contributor.authorQueloz, Didier
dc.contributor.authorPollacco, Don
dc.contributor.authorSouthworth, John
dc.contributor.authorTregloan-Reed, Jeremy
dc.contributor.authorUdry, Stéphane
dc.contributor.authorWest, Richard
dc.identifier.citationTriaud , A H M J , Neveu-VanMalle , M , Lendl , M , Anderson , D R , Collier Cameron , A , Delrez , L , Doyle , A , Gillon , M , Hellier , C , Jehin , E , Maxted , P F L , Ségransan , D , Smalley , B , Queloz , D , Pollacco , D , Southworth , J , Tregloan-Reed , J , Udry , S & West , R 2017 , ' Peculiar architectures for the WASP-53 and WASP-81 planet-hosting systems ' , Monthly Notices of the Royal Astronomical Society , vol. 467 , no. 2 , pp. 1714-1733 .
dc.identifier.otherPURE: 249376919
dc.identifier.otherPURE UUID: e0d33888-cd1c-4873-9b0e-e845923eff0c
dc.identifier.otherBibCode: 2017MNRAS.tmp..167T
dc.identifier.otherScopus: 85018289273
dc.identifier.otherORCID: /0000-0002-8863-7828/work/58531344
dc.identifier.otherWOS: 000398416700034
dc.description.abstractWe report the detection of two new systems containing transiting planets. Both were identified by WASP as worthy transiting planet candidates. Radial velocity observations quickly verified that the photometric signals were indeed produced by two transiting hot Jupiters. Our observations also show the presence of additional Doppler signals. In addition to short-period hot Jupiters, we find that the WASP-53 and WASP-81 systems also host brown dwarfs, on fairly eccentric orbits with semimajor axes of a few astronomical units. WASP-53c is over 16 MJupsin ic and WASP-81c is 57 MJupsin ic. The presence of these tight, massive companions restricts theories of how the inner planets were assembled. We propose two alternative interpretations: the formation of the hot Jupiters within the snow line or the late dynamical arrival of the brown dwarfs after disc dispersal. We also attempted to measure the Rossiter–McLaughlin effect for both hot Jupiters. In the case of WASP-81b, we fail to detect a signal. For WASP-53b, we find that the planet is aligned with respect to the stellar spin axis. In addition we explore the prospect of transit-timing variations, and of using Gaia's astrometry to measure the true masses of both brown dwarfs and also their relative inclination with respect to the inner transiting hot Jupiters.
dc.relation.ispartofMonthly Notices of the Royal Astronomical Societyen
dc.rights© 2017 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at:
dc.subjectPlanetary systemsen
dc.subjectPlanets and satellites: individual: WASP-81en
dc.subjectBinaries: eclipsingen
dc.subjectBrown dwarfsen
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.titlePeculiar architectures for the WASP-53 and WASP-81 planet-hosting systemsen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews.St Andrews Centre for Exoplanet Scienceen
dc.description.statusPeer revieweden

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