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dc.contributor.authorLendl, M.
dc.contributor.authorCsizmadia, Sz
dc.contributor.authorDeline, A.
dc.contributor.authorFossati, L.
dc.contributor.authorKitzmann, D.
dc.contributor.authorHeng, K.
dc.contributor.authorHoyer, S.
dc.contributor.authorSalmon, S.
dc.contributor.authorBenz, W.
dc.contributor.authorBroeg, C.
dc.contributor.authorEhrenreich, D.
dc.contributor.authorFortier, A.
dc.contributor.authorQueloz, D.
dc.contributor.authorBonfanti, A.
dc.contributor.authorBrandeker, A.
dc.contributor.authorCollier Cameron, A.
dc.contributor.authorDelrez, L.
dc.contributor.authorGarcia Muñoz, A.
dc.contributor.authorHooton, M. J.
dc.contributor.authorMaxted, P. F.L.
dc.contributor.authorMorris, B. M.
dc.contributor.authorVan Grootel, V.
dc.contributor.authorWilson, T. G.
dc.contributor.authorAlibert, Y.
dc.contributor.authorAlonso, R.
dc.contributor.authorAsquier, J.
dc.contributor.authorBandy, T.
dc.contributor.authorBárczy, T.
dc.contributor.authorBarrado, D.
dc.contributor.authorBarros, S. C.C.
dc.contributor.authorBaumjohann, W.
dc.contributor.authorBeck, M.
dc.contributor.authorBeck, T.
dc.contributor.authorBekkelien, A.
dc.contributor.authorBergomi, M.
dc.contributor.authorBillot, N.
dc.contributor.authorBiondi, F.
dc.contributor.authorBonfils, X.
dc.contributor.authorBourrier, V.
dc.contributor.authorBusch, M. D.
dc.contributor.authorCabrera, J.
dc.contributor.authorCessa, V.
dc.contributor.authorCharnoz, S.
dc.contributor.authorChazelas, B.
dc.contributor.authorCorral Van Damme, C.
dc.contributor.authorDavies, M. B.
dc.contributor.authorDeleuil, M.
dc.contributor.authorDemangeon, O. D.S.
dc.contributor.authorDemory, B. O.
dc.contributor.authorErikson, A.
dc.contributor.authorFarinato, J.
dc.contributor.authorFridlund, M.
dc.contributor.authorFutyan, D.
dc.contributor.authorGandolfi, D.
dc.contributor.authorGillon, M.
dc.contributor.authorGuterman, P.
dc.contributor.authorHasiba, J.
dc.contributor.authorHernandez, E.
dc.contributor.authorIsaak, K. G.
dc.contributor.authorKiss, L.
dc.contributor.authorKuntzer, T.
dc.contributor.authorLecavelier Des Etangs, A.
dc.contributor.authorLüftinger, T.
dc.contributor.authorLaskar, J.
dc.contributor.authorLovis, C.
dc.contributor.authorMagrin, D.
dc.contributor.authorMalvasio, L.
dc.contributor.authorMarafatto, L.
dc.contributor.authorMichaelis, H.
dc.contributor.authorMunari, M.
dc.contributor.authorNascimbeni, V.
dc.contributor.authorOlofsson, G.
dc.contributor.authorOttacher, H.
dc.contributor.authorOttensamer, R.
dc.contributor.authorPagano, I.
dc.contributor.authorPallé, E.
dc.contributor.authorPeter, G.
dc.contributor.authorPiazza, D.
dc.contributor.authorPiotto, G.
dc.contributor.authorPollacco, D.
dc.contributor.authorRatti, F.
dc.contributor.authorRauer, H.
dc.contributor.authorRagazzoni, R.
dc.contributor.authorRando, N.
dc.contributor.authorRibas, I.
dc.contributor.authorRieder, M.
dc.contributor.authorRohlfs, R.
dc.contributor.authorSafa, F.
dc.contributor.authorSantos, N. C.
dc.contributor.authorScandariato, G.
dc.contributor.authorSégransan, D.
dc.contributor.authorSimon, A. E.
dc.contributor.authorSingh, V.
dc.contributor.authorSmith, A. M.S.
dc.contributor.authorSordet, M.
dc.contributor.authorSousa, S. G.
dc.contributor.authorSteller, M.
dc.contributor.authorSzabó, Gy M.
dc.contributor.authorThomas, N.
dc.contributor.authorTschentscher, M.
dc.contributor.authorUdry, S.
dc.contributor.authorViotto, V.
dc.contributor.authorWalter, I.
dc.contributor.authorWalton, N. A.
dc.contributor.authorWildi, F.
dc.contributor.authorWolter, D.
dc.date.accessioned2020-12-07T15:58:56Z
dc.date.available2020-12-07T15:58:56Z
dc.date.issued2020-11-09
dc.identifier.citationLendl , M , Csizmadia , S , Deline , A , Fossati , L , Kitzmann , D , Heng , K , Hoyer , S , Salmon , S , Benz , W , Broeg , C , Ehrenreich , D , Fortier , A , Queloz , D , Bonfanti , A , Brandeker , A , Collier Cameron , A , Delrez , L , Garcia Muñoz , A , Hooton , M J , Maxted , P F L , Morris , B M , Van Grootel , V , Wilson , T G , Alibert , Y , Alonso , R , Asquier , J , Bandy , T , Bárczy , T , Barrado , D , Barros , S C C , Baumjohann , W , Beck , M , Beck , T , Bekkelien , A , Bergomi , M , Billot , N , Biondi , F , Bonfils , X , Bourrier , V , Busch , M D , Cabrera , J , Cessa , V , Charnoz , S , Chazelas , B , Corral Van Damme , C , Davies , M B , Deleuil , M , Demangeon , O D S , Demory , B O , Erikson , A , Farinato , J , Fridlund , M , Futyan , D , Gandolfi , D , Gillon , M , Guterman , P , Hasiba , J , Hernandez , E , Isaak , K G , Kiss , L , Kuntzer , T , Lecavelier Des Etangs , A , Lüftinger , T , Laskar , J , Lovis , C , Magrin , D , Malvasio , L , Marafatto , L , Michaelis , H , Munari , M , Nascimbeni , V , Olofsson , G , Ottacher , H , Ottensamer , R , Pagano , I , Pallé , E , Peter , G , Piazza , D , Piotto , G , Pollacco , D , Ratti , F , Rauer , H , Ragazzoni , R , Rando , N , Ribas , I , Rieder , M , Rohlfs , R , Safa , F , Santos , N C , Scandariato , G , Ségransan , D , Simon , A E , Singh , V , Smith , A M S , Sordet , M , Sousa , S G , Steller , M , Szabó , G M , Thomas , N , Tschentscher , M , Udry , S , Viotto , V , Walter , I , Walton , N A , Wildi , F & Wolter , D 2020 , ' The hot dayside and asymmetric transit of WASP-189 b seen by CHEOPS ' , Astronomy and Astrophysics , vol. 643 , A94 . https://doi.org/10.1051/0004-6361/202038677en
dc.identifier.issn0004-6361
dc.identifier.otherPURE: 271433546
dc.identifier.otherPURE UUID: f5efc4ca-a930-4599-8255-d31f96e17ad1
dc.identifier.otherScopus: 85096034316
dc.identifier.otherORCID: /0000-0002-8863-7828/work/84314928
dc.identifier.otherORCID: /0000-0001-8749-1962/work/86987364
dc.identifier.otherWOS: 000591851400001
dc.identifier.urihttp://hdl.handle.net/10023/21107
dc.descriptionA.D.E. and D.E.H. acknowledge support from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (project FOUR ACES; grant agreement no. 724427). S.S. has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No 833925, project STAREX).en
dc.description.abstractThe CHEOPS space mission dedicated to exoplanet follow-up was launched in December 2019, equipped with the capacity to perform photometric measurements at the 20 ppm level. As CHEOPS carries out its observations in a broad optical passband, it can provide insights into the reflected light from exoplanets and constrain the short-wavelength thermal emission for the hottest of planets by observing occultations and phase curves. Here, we report the first CHEOPS observation of an occultation, namely, that of the hot Jupiter WASP-189 b, a MP ≈ 2MJ planet orbiting an A-type star. We detected the occultation of WASP-189 b at high significance in individual measurements and derived an occultation depth of dF = 87.9 ± 4.3 ppm based on four occultations. We compared these measurements to model predictions and we find that they are consistent with an unreflective atmosphere heated to a temperature of 3435 ± 27 K, when assuming inefficient heat redistribution. Furthermore, we present two transits of WASP-189 b observed by CHEOPS. These transits have an asymmetric shape that we attribute to gravity darkening of the host star caused by its high rotation rate. We used these measurements to refine the planetary parameters, finding a ~25% deeper transit compared to the discovery paper and updating the radius of WASP-189 b to 1.619 ± 0.021RJ. We further measured the projected orbital obliquity to be λ = 86.4-4.4+2.9°, a value that is in good agreement with a previous measurement from spectroscopic observations, and derived a true obliquity of ψ = 85.4 ± 4.3°. Finally, we provide reference values for the photometric precision attained by the CHEOPS satellite: for the V = 6.6 mag star, and using a 1-h binning, we obtain a residual RMS between 10 and 17 ppm on the individual light curves, and 5.7 ppm when combining the four visits.
dc.format.extent10
dc.language.isoeng
dc.relation.ispartofAstronomy and Astrophysicsen
dc.rightsCopyright © ESO 2020.This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the final published version of the work, which was originally published at https://doi.org/10.1051/0004-6361/202038677en
dc.subjectPlanets and satellites: atmospheresen
dc.subjectPlanets and satellites: individual: WASP-189 ben
dc.subjectTechniques: photometricen
dc.subjectQC Physicsen
dc.subjectQB Astronomyen
dc.subjectAstronomy and Astrophysicsen
dc.subjectSpace and Planetary Scienceen
dc.subjectDASen
dc.subject.lccQCen
dc.subject.lccQBen
dc.titleThe hot dayside and asymmetric transit of WASP-189 b seen by CHEOPSen
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/10.1051/0004-6361/202038677
dc.description.statusPeer revieweden
dc.identifier.urlhttps://arxiv.org/abs/2009.13403en


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