Show simple item record

Files in this item

Thumbnail

Item metadata

dc.contributor.authorGiles, H. A. C.
dc.contributor.authorOsborn, H. P.
dc.contributor.authorBlanco-Cuaresma, S.
dc.contributor.authorLovis, C.
dc.contributor.authorBayliss, D.
dc.contributor.authorEggenberger, P.
dc.contributor.authorCameron, A. Collier
dc.contributor.authorKristiansen, M. H.
dc.contributor.authorTurner, O.
dc.contributor.authorBouchy, F.
dc.contributor.authorUdry, S.
dc.date.accessioned2018-08-09T16:30:07Z
dc.date.available2018-08-09T16:30:07Z
dc.date.issued2018-07-20
dc.identifier.citationGiles , H A C , Osborn , H P , Blanco-Cuaresma , S , Lovis , C , Bayliss , D , Eggenberger , P , Cameron , A C , Kristiansen , M H , Turner , O , Bouchy , F & Udry , S 2018 , ' Transiting planet candidate from K2 with the longest period ' , Astronomy & Astrophysics , vol. 615 , L13 . https://doi.org/10.1051/0004-6361/201833569en
dc.identifier.issn0004-6361
dc.identifier.otherPURE: 255238508
dc.identifier.otherPURE UUID: 91406687-4777-4ac8-805d-3f9286d2c221
dc.identifier.otherArXiv: http://arxiv.org/abs/1806.08757v1
dc.identifier.otherBibCode: 2018arXiv180608757G
dc.identifier.otherScopus: 85062818966
dc.identifier.otherORCID: /0000-0002-8863-7828/work/58531402
dc.identifier.otherWOS: 000439530300003
dc.identifier.urihttps://hdl.handle.net/10023/15795
dc.description.abstractContext. We present the transit and follow-up of a single transit event from Campaign 14 of K2, EPIC248847494b, which has a duration of 54 h and a 0.18% depth. Aims. Using photometric tools and conducting radial velocity follow-up, we vet and characterise this very strong candidate. Methods. Owing to the long, unknown period, standard follow-up methods needed to be adapted. The transit was fitted using Namaste, and the radial velocity slope was measured and compared to a grid of planet-like orbits with varying masses and periods. These used stellar parameters measured from spectra and the distance as measured by Gaia. Results. Orbiting around a sub-giant star with a radius of 2.70 ± 0.12 RSol, the planet has a radius of 1.11−0.07+0.07 RJup and a period of 3650−1130+1280 days. The radial velocity measurements constrain the mass to be lower than 13 MJup, which implies a planet-like object. Conclusions. We have found a planet at 4.5 AU from a single-transit event. After a full radial velocity follow-up campaign, if confirmed, it will be the longest-period transiting planet discovered.
dc.format.extent5
dc.language.isoeng
dc.relation.ispartofAstronomy & Astrophysicsen
dc.rights© 2018, ESO. This work has been made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at https://doi.org/10.1051/0004-6361/201833569.en
dc.subjectPlanets and satellites: detectionen
dc.subjectStars: individual: EPIC248847494en
dc.subjectPlanetary systemsen
dc.subjectTechniques: photometricen
dc.subjectTechniques: radial velocitiesen
dc.subjectTechniques: spectroscopicen
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.subject3rd-DASen
dc.subject.lccQBen
dc.subject.lccQCen
dc.titleTransiting planet candidate from K2 with the longest perioden
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.identifier.doihttps://doi.org/10.1051/0004-6361/201833569
dc.description.statusPeer revieweden
dc.identifier.urlhttps://arxiv.org/abs/1806.08757en


This item appears in the following Collection(s)

Show simple item record