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dc.contributor.authorOsborn, H. P.
dc.contributor.authorSanterne, A.
dc.contributor.authorBarros, S. C. C.
dc.contributor.authorSantos, N. C.
dc.contributor.authorDumusque, X.
dc.contributor.authorMalavolta, L.
dc.contributor.authorArmstrong, D. J.
dc.contributor.authorHojjatpanah, S.
dc.contributor.authorDemangeon, O.
dc.contributor.authorAdibekyan, V.
dc.contributor.authorAlmenara, J.-M.
dc.contributor.authorBarrado, D.
dc.contributor.authorBayliss, D.
dc.contributor.authorBoisse, I.
dc.contributor.authorBouchy, F.
dc.contributor.authorBrown, D. J. A.
dc.contributor.authorCameron, A. C.
dc.contributor.authorCharbonneau, D.
dc.contributor.authorDeleuil, M.
dc.contributor.authorDelgado Mena, E.
dc.contributor.authorDíaz, R. F.
dc.contributor.authorHébrard, G.
dc.contributor.authorKirk, J.
dc.contributor.authorKing, G.W.
dc.contributor.authorLam, K. W. F.
dc.contributor.authorLatham, D.
dc.contributor.authorLillo-Box, J.
dc.contributor.authorLouden, T. M.
dc.contributor.authorLovis, C.
dc.contributor.authorMarmier, M.
dc.contributor.authorMcCormac, J.
dc.contributor.authorMolinari, E.
dc.contributor.authorPepe, F.
dc.contributor.authorPollacco, D.
dc.contributor.authorSousa, S. G.
dc.contributor.authorUdry, S.
dc.contributor.authorWalker, S. R.
dc.date.accessioned2017-08-07T16:30:12Z
dc.date.available2017-08-07T16:30:12Z
dc.date.issued2017-08
dc.identifier.citationOsborn , H P , Santerne , A , Barros , S C C , Santos , N C , Dumusque , X , Malavolta , L , Armstrong , D J , Hojjatpanah , S , Demangeon , O , Adibekyan , V , Almenara , J-M , Barrado , D , Bayliss , D , Boisse , I , Bouchy , F , Brown , D J A , Cameron , A C , Charbonneau , D , Deleuil , M , Delgado Mena , E , Díaz , R F , Hébrard , G , Kirk , J , King , G W , Lam , K W F , Latham , D , Lillo-Box , J , Louden , T M , Lovis , C , Marmier , M , McCormac , J , Molinari , E , Pepe , F , Pollacco , D , Sousa , S G , Udry , S & Walker , S R 2017 , ' K2-110 b: a massive mini-Neptune exoplanet ' Astronomy & Astrophysics , vol 604 , A19 . DOI: 10.1051/0004-6361/201628932en
dc.identifier.issn0004-6361
dc.identifier.otherPURE: 250675298
dc.identifier.otherPURE UUID: 9358d024-863a-41a2-97ce-b0aeffe15d15
dc.identifier.otherBibCode: 2017A&A...604A..19O
dc.identifier.urihttp://hdl.handle.net/10023/11398
dc.identifier.urihttps://arxiv.org/abs/1605.04291v3en
dc.identifier.urihttp://adsabs.harvard.edu/abs/2017A%26A...604A..19Oen
dc.description.abstractWe report the discovery of the exoplanet K2-110 b (previously EPIC212521166b) from K2 photometry orbiting in a 13.8637d period around an old, metal-poor K3 dwarf star. With a V-band magnitude of 11.9,K2-110 is particularly amenable to RV follow-up. A joint analysis of K2 photometry and high-precision RVs from 28 HARPS and HARPS-N spectra reveal it to have a radius of 2.6 ± 0.1R⊕ and amass of 16.7 ± 3.2M⊕, hence a density of 5.2± 1.2 g cm-3, making it one of the most massive planets yet to be found with a sub-Neptune radius. When accounting for compression, the resulting Earth-like density is best fitted by a 0.2M⊕ hydrogen atmosphere over an 16.5M⊕ Earth-like interior, although the planet could also have significant water content. At 0.1 AU, even taking into account the old stellar age of 8 ± 3 Gyr, the planet is unlikely to have been significantly affected by EUV evaporation. However the planet likely disc-migrated to its current position making the lack of a thick H2 atmosphere puzzling. This analysis has made K2-110 b one of the best-characterised mini-Neptunes with density constrained to less than 30%.en
dc.format.extent8en
dc.language.isoeng
dc.relation.ispartofAstronomy & Astrophysicsen
dc.rights© 2017, ESO. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at www.aanda.org / https://doi.org/10.1051/0004-6361/201628932en
dc.subjectPlanets and satellitesen
dc.subjectDetectionen
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.subject.lccQBen
dc.subject.lccQCen
dc.titleK2-110 b: a massive mini-Neptune exoplaneten
dc.typeJournal articleen
dc.description.versionPostprinten
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.doihttp://dx.doi.org/10.1051/0004-6361/201628932
dc.description.statusPeer revieweden


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