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dc.contributor.authorSzabo, Gy M.
dc.contributor.authorGarai, Z.
dc.contributor.authorBrandeker, A.
dc.contributor.authorGandolfi, D.
dc.contributor.authorWilson, T. G.
dc.contributor.authorDeline, A.
dc.contributor.authorOlofsson, G.
dc.contributor.authorFortier, A.
dc.contributor.authorQueloz, D.
dc.contributor.authorBorsato, L.
dc.contributor.authorKiefer, F.
dc.contributor.authorLecavelier des Etangs, A.
dc.contributor.authorLendl, M.
dc.contributor.authorSerrano, L. M.
dc.contributor.authorSulis, S.
dc.contributor.authorMoll, S. Ulmer
dc.contributor.authorVan Grootel, V.
dc.contributor.authorAlibert, Y.
dc.contributor.authorAlonso, R.
dc.contributor.authorAnglada, G.
dc.contributor.authorBarczy, T.
dc.contributor.authorBarrado Y Navascues, D.
dc.contributor.authorBarros, S. C. C.
dc.contributor.authorBaumjohann, W.
dc.contributor.authorBeck, T.
dc.contributor.authorBenz, W.
dc.contributor.authorBillot, N.
dc.contributor.authorBonfanti, A.
dc.contributor.authorBonfils, X.
dc.contributor.authorBroeg, C.
dc.contributor.authorCabrera, J.
dc.contributor.authorCharnoz, S.
dc.contributor.authorCameron, A. Collier
dc.contributor.authorCsizmadia, Sz
dc.contributor.authorDavies, M. B.
dc.contributor.authorDeleuil, M.
dc.contributor.authorDelrez, L.
dc.contributor.authorDemangeon, O.
dc.contributor.authorDemory, B-O
dc.contributor.authorEhrenreich, D.
dc.contributor.authorErikson, A.
dc.contributor.authorFossati, L.
dc.contributor.authorFridlund, M.
dc.contributor.authorGillon, M.
dc.contributor.authorGudel, M.
dc.contributor.authorHeng, K.
dc.contributor.authorHoyer, S.
dc.contributor.authorIsaak, K. G.
dc.contributor.authorKiss, L. L.
dc.contributor.authorLaskar, J.
dc.contributor.authorLovis, C.
dc.contributor.authorMagrin, D.
dc.contributor.authorMaxted, P. F. L.
dc.contributor.authorMecina, M.
dc.contributor.authorNascimbeni, V.
dc.contributor.authorOttensamer, R.
dc.contributor.authorPagano, I.
dc.contributor.authorPalle, E.
dc.contributor.authorPeter, G.
dc.contributor.authorPiotto, G.
dc.contributor.authorPollacco, D.
dc.contributor.authorRagazzoni, R.
dc.contributor.authorRando, N.
dc.contributor.authorRauer, H.
dc.contributor.authorRibas, I.
dc.contributor.authorSantos, N. C.
dc.contributor.authorSarajlic, M.
dc.contributor.authorScandariato, G.
dc.contributor.authorSegransan, D.
dc.contributor.authorSimon, A. E.
dc.contributor.authorSmith, A. M. S.
dc.contributor.authorSousa, S. G.
dc.contributor.authorSteller, M.
dc.contributor.authorThomas, N.
dc.contributor.authorUdry, S.
dc.contributor.authorVerrecchia, F.
dc.contributor.authorWalton, N.
dc.contributor.authorWolter, D.
dc.date.accessioned2022-05-05T15:30:45Z
dc.date.available2022-05-05T15:30:45Z
dc.date.issued2022-03-10
dc.identifier278685041
dc.identifier5946ea6f-2491-4bb1-97e2-46e31a196401
dc.identifier000766834200005
dc.identifier85127067590
dc.identifier.citationSzabo , G M , Garai , Z , Brandeker , A , Gandolfi , D , Wilson , T G , Deline , A , Olofsson , G , Fortier , A , Queloz , D , Borsato , L , Kiefer , F , Lecavelier des Etangs , A , Lendl , M , Serrano , L M , Sulis , S , Moll , S U , Van Grootel , V , Alibert , Y , Alonso , R , Anglada , G , Barczy , T , Barrado Y Navascues , D , Barros , S C C , Baumjohann , W , Beck , T , Benz , W , Billot , N , Bonfanti , A , Bonfils , X , Broeg , C , Cabrera , J , Charnoz , S , Cameron , A C , Csizmadia , S , Davies , M B , Deleuil , M , Delrez , L , Demangeon , O , Demory , B-O , Ehrenreich , D , Erikson , A , Fossati , L , Fridlund , M , Gillon , M , Gudel , M , Heng , K , Hoyer , S , Isaak , K G , Kiss , L L , Laskar , J , Lovis , C , Magrin , D , Maxted , P F L , Mecina , M , Nascimbeni , V , Ottensamer , R , Pagano , I , Palle , E , Peter , G , Piotto , G , Pollacco , D , Ragazzoni , R , Rando , N , Rauer , H , Ribas , I , Santos , N C , Sarajlic , M , Scandariato , G , Segransan , D , Simon , A E , Smith , A M S , Sousa , S G , Steller , M , Thomas , N , Udry , S , Verrecchia , F , Walton , N & Wolter , D 2022 , ' Transit timing variations of AU Microscopii b and c ' , Astronomy and Astrophysics , vol. 659 , L7 . https://doi.org/10.1051/0004-6361/202243076en
dc.identifier.issn0004-6361
dc.identifier.otherORCID: /0000-0002-8863-7828/work/110911756
dc.identifier.otherORCID: /0000-0001-8749-1962/work/110912294
dc.identifier.urihttps://hdl.handle.net/10023/25292
dc.descriptionFunding: A.C.C. and T.W. acknowledge support from STFC consolidated grant number ST/M001296/1.en
dc.description.abstractHere we report large-amplitude transit timing variations (TTVs) for AU Microcopii b and c as detected in combined TESS (2018, 2020) and CHEOPS (2020, 2021) transit observations. AU Mic is a young planetary system with a debris disk and two transiting warm Neptunes. A TTV on the order of several minutes was previously reported for AU Mic b, which was suggested to be an outcome of mutual perturbations between the planets in the system. In 2021, we observed AU Mic b (five transits) and c (three transits) with the CHEOPS space telescope to follow-up the TTV of AU Mic b and possibly detect a TTV for AU Mic c. When analyzing TESS and CHEOPS 2020-2021 measurements together, we find that a prominent TTV emerges with a full span of >= 23 min between the two TTV extrema. Assuming that the period change results from a periodic process -such as mutual perturbations- we demonstrate that the times of transits in the summer of 2022 are expected to be 30-85 min later than predicted by the available linear ephemeris.
dc.format.extent9
dc.format.extent2428441
dc.language.isoeng
dc.relation.ispartofAstronomy and Astrophysicsen
dc.subjectPlanets and satellites: fundamental parametersen
dc.subjectPlanets and satellites: individualen
dc.subjectAU Mic b and cen
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.subjectDASen
dc.subject.lccQBen
dc.subject.lccQCen
dc.titleTransit timing variations of AU Microscopii b and cen
dc.typeJournal itemen
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.doi10.1051/0004-6361/202243076
dc.description.statusPeer revieweden


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