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Transiting planet candidate from K2 with the longest period
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dc.contributor.author | Giles, H. A. C. | |
dc.contributor.author | Osborn, H. P. | |
dc.contributor.author | Blanco-Cuaresma, S. | |
dc.contributor.author | Lovis, C. | |
dc.contributor.author | Bayliss, D. | |
dc.contributor.author | Eggenberger, P. | |
dc.contributor.author | Cameron, A. Collier | |
dc.contributor.author | Kristiansen, M. H. | |
dc.contributor.author | Turner, O. | |
dc.contributor.author | Bouchy, F. | |
dc.contributor.author | Udry, S. | |
dc.date.accessioned | 2018-08-09T16:30:07Z | |
dc.date.available | 2018-08-09T16:30:07Z | |
dc.date.issued | 2018-07-20 | |
dc.identifier.citation | Giles , 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/10.1051/0004-6361/201833569 | en |
dc.identifier.issn | 0004-6361 | |
dc.identifier.other | PURE: 255238508 | |
dc.identifier.other | PURE UUID: 91406687-4777-4ac8-805d-3f9286d2c221 | |
dc.identifier.other | ArXiv: http://arxiv.org/abs/1806.08757v1 | |
dc.identifier.other | BibCode: 2018arXiv180608757G | |
dc.identifier.other | Scopus: 85062818966 | |
dc.identifier.other | ORCID: /0000-0002-8863-7828/work/58531402 | |
dc.identifier.other | WOS: 000439530300003 | |
dc.identifier.uri | https://hdl.handle.net/10023/15795 | |
dc.description.abstract | Context. 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.extent | 5 | |
dc.language.iso | eng | |
dc.relation.ispartof | Astronomy & Astrophysics | en |
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.subject | Planets and satellites: detection | en |
dc.subject | Stars: individual: EPIC248847494 | en |
dc.subject | Planetary systems | en |
dc.subject | Techniques: photometric | en |
dc.subject | Techniques: radial velocities | en |
dc.subject | Techniques: spectroscopic | en |
dc.subject | QB Astronomy | en |
dc.subject | QC Physics | en |
dc.subject | 3rd-DAS | en |
dc.subject.lcc | QB | en |
dc.subject.lcc | QC | en |
dc.title | Transiting planet candidate from K2 with the longest period | en |
dc.type | Journal article | en |
dc.description.version | Publisher PDF | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.contributor.institution | University of St Andrews. St Andrews Centre for Exoplanet Science | en |
dc.identifier.doi | https://doi.org/10.1051/0004-6361/201833569 | |
dc.description.status | Peer reviewed | en |
dc.identifier.url | https://arxiv.org/abs/1806.08757 | en |
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