J/A+A/673/A42ivo://CDS.VizieR/J/A+A/673/A42doi:10.26093/cds/vizier.36730042CDSNascimbeni V.Borsato L.Zingales T.Piotto G.Pagano I.Beck M.,Broeg C.Ehrenreich D.Hoyer S.Majidi F.Z.Granata V.Sousa S.G.,Wilson T.G.Van Grootel V.Bonfanti A.Salmon S.Mustill A.J.,Delrez L.Alibert Y.Alonso R.Anglada G.Barczy T.Barrado D.,Barros S.C.C.Baumjohann W.Beck T.Benz W.Bergomi M.Billot N.,Bonfils X.Brandeker A.Cabrera J.Charnoz S.Collier Cameron A.,Csizmadia S.Cubillos P.E.Davies M.B.Deleuil M.Deline A.,Demangeon O.D.S.Demory B.-O.Erikson A.Fortier A.Fossati L.,Fridlund M.Gandolfi D.Gillon M.Gudel M.Isaak K.G.Kiss L.L.,Laskar J.Lecavelier Des Etangs A.Lendl M.Lovis C.Luque R.,Magrin D.Maxted P.F.L.Mordasini C.Olofsson G.Ottensamer R.,Palle E.Peter G.Piazza D.Pollacco D.Queloz D.Ragazzoni R.,Rando N.Ratti F.Rauer H.Ribas I.Santos N.C.Scandariato G.,Segransan D.Simon A.E.Smith A.M.S.Steinberger M.Steller M.,Szabo G.M.Thomas N.Udry S.Venturini J.Walton N.A.Wolter D.2024-11-06T20:04:03Z2024-09-10T08:35:29ZCDS support team

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

cds-question@unistra.frmultiple-starsexoplanetsphotometryvisible-astronomyAmong the hundreds of known hot Jupiters (HJs), only five have been found to have companions on short-period orbits. Within this rare class of multiple planetary systems, the architecture of WASP-47 is unique, hosting an HJ (planet -b) with both an inner and an outer sub-Neptunian mass companion (-e and -d, respectively) as well as an additional non-transiting, long-period giant (-c). The small period ratio between planets -b and -d boosts the transit time variation (TTV) signal, making it possible to reliably measure the masses of these planets in synergy with the radial velocity (RV) technique. In this paper, we present new space- and ground- based photometric data of WASP-47b and WASP-47-d, including 11 unpublished light curves from the ESA mission CHEOPS. We analyzed the light curves in a homogeneous way together with all the publicly available data to carry out a global N-body dynamical modeling of the TTV and RV signals. We retrieved, among other parameters, a mass and density for planet -d of M_d_=15.5+/-0.8M_{Earth}_ and rho_d_=1.69+/-0.22g/cm^3^, which is in good agreement with the literature and consistent with a Neptune-like composition. For the inner planet (-e), we found a mass and density of M_e_=9.0+/-0.5M_{Earth}_ and rho_e_=8.1+/-0.5g/cm^3^, suggesting an Earth-like composition close to other ultra- hot planets at similar irradiation levels. Though this result is in agreement with previous RV+TTV studies, it is not in agreement with the most recent RV analysis (at 2.8{sigma}), which yielded a lower density compatible with a pure silicate composition. This discrepancy highlights the still unresolved issue of suspected systematic offsets between RV and TTV measurements. In this paper, we also significantly improve the orbital ephemerides of all transiting planets, which will be crucial for any future follow-up.2023A&A...673A..42Nhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/673/A42CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/586/A93 : WASP41 & WASP47 photometric and RV data (Neveu-VanMalle+, 216)J/AJ/154/237 : HARPS-N radial velocities of WASP-47 (Vanderburg+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/673/A42https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/673/A42http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/673/A42https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/673/A42https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/673/A42http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/673/A42GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/673/A42/lcsLight curves of WASP-47b and WASP-47dResFlux residuals from the best-fit modelstat.fit.residualdoubleT0Best-fit transit time T0, for stackingtime.epochdoubleNNumerical ID, for plottingmeta.idintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTimeTime of the observation, BJD-TDB standarddtime.epochdoubleFluxDetrended flux, normalizedphot.flux;arith.ratiodoublee_Flux1-sigma error on the detrended fluxstat.error;phot.fluxdoublePlanet[-b -d] Name of the planet (-b or -d)meta.id;meta.maincharIdID of the corresponding light curve (1)meta.idcharModelBest-fit PyORBIT modelstat.param;meta.modelleddoubleJ/A+A/673/A42/t0sTransit times of WASP-47b, WASP-47d and WASP-47e predicted by our dynamic modelPlanet[-b -d -e] Name of the planet (-b, -d, -e)meta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintT0Central transit time T0, BJD-TDB standarddtime.epochdoubles_T0Symmetrized 1-sigma error on T0dstat.errordoublee_T0[] Lower 1-sigma error bar on T0dstat.errordoubleE_T0Upper 1-sigma error bar on T0dstat.error;stat.maxdoubleInstInstrument (1)meta.id;instrchar