J/A+A/671/A154ivo://CDS.VizieR/J/A+A/671/A154doi:10.26093/cds/vizier.36710154CDSEhrenreich D.Delrez L.Akinsanmi B.Wilson T.G.Bonfanti A.Beck M.,Benz W.Hoyer S.Queloz D.Alibert Y.Charnoz S.Collier Cameron A.,Deline A.Hooton M.Lendl M.Olofsson G.Sousa S.G.Adibekyan V.,Alonso R.Anglada G.Barrado D.Barros S.C.C.Baumjohann W.Beck T.,Bekkelien A.Bergomi M.Billot N.Bonfils X.Brandeker A.Broeg C.,Barczy T.Berta-Thompson Z.K.Cabrera J.Corral Van Damme C.,Csizmadia S.Davies M.B.Deleuil M.Demangeon O.Demory B.-O.,Doty J.P.Erikson A.Fausnaugh M.M.Floren H.-G.Fortier A.,Fossati L.Fridlund M.Futyan D.Gandolfi D.Gillon M.Guterman P.,Guedel M.Heng K.Isaak K.G.Jaeckel A.Jenkins J.M.Kiss L.L.,Laskar J.Latham D.W.Lecavelier des Etangs A.Levine A.M.Lovis C.,Magrin D.Maxted P.F.L.Morgan E.H.Nascimbeni V.Osborn H.P.,Ottensamer R.Pagano I.Palle E.Peter G.Piotto G.Pollacco D.,Ragazzoni R.Rando N.Rauer H.Ribas I.Ricker G.R.Salmon S.,Santos N.C.Scandariato G.Simon A.E.Smith A.M.S.Steinberger M.,Steller M.Szabo G.M.Segransan D.Shporer A.Thomas N.,Tschentscher M.Udry S.Vanderspek R.Van Grootel V.Walton N.A.2024-11-06T20:02:58Z2023-03-20T13:36:47ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frmultiple-starsexoplanetsphotometryvisible-astronomyThe planetary system around the naked-eye star nu.02 Lup (HD 136352; TOI-2011) is composed of three exoplanets with masses of 4.7, 11.2 and 8.6 Earth masses. The TESS and CHEOPS missions revealed that all three planets are transiting and have radii straddling the radius gap separating volatile-rich and volatile-poor super-earths. Only a partial transit of planet d had been covered so we re-observed an inferior conjunction of the long-period 8.6 Earth mass exoplanet nu.02 Lup d with the CHEOPS space telescope. We confirmed its transiting nature by covering its whole 9.1h transit for the first time. We refined the planet transit ephemeris to P=107.1361^+0.0019^_-0.0022_ days and T_c_=2459009.7759^+0.0101^_-0.0096_ BJD_TDB, improving by ~40 times on the previously reported transit timing uncertainty. This refined ephemeris will enable further follow-up of this outstanding long-period transiting planet to search for atmospheric signatures or explore the planet's Hill sphere in search for an exomoon. In fact, the CHEOPS observations also cover the transit of a large fraction of the planet's Hill sphere, which is as large as the Earth's, opening the tantalising possibility of catching transiting exomoons. We conducted a search for exomoon signals in this single-epoch light curve but found no conclusive photometric signature of additional transiting bodies larger than Mars. Yet, only a sustained follow-up of nu.02 Lup d transits will warrant a comprehensive search for a moon around this outstanding exoplanet.2023A&A...671A.154Ehttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/671/A154CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/AJ/160/129 : HD 136352 HARPS, HIRES and AAT radial velocities (Kane+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/671/A154https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/671/A154http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/671/A154https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/671/A154https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/671/A154http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/671/A154GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/671/A154/detrendHD 136352 detrended CHEOPS light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTimeTime (BJD_TDB)time.epochdoubleNFluxNormalised fluxphot.fluxdoublee_NFluxUncertainty (1sigma) on normalised fluxstat.errordoubleJ/A+A/671/A154/reducedHD 136352 automatically-reduced CHEOPS light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTimeTime (BJD_TDB)time.epochdoubleNFluxNormalised fluxphot.fluxdoublee_NFluxUncertainty (1sigma) on normalised fluxstat.errordouble