J/A+A/675/A183ivo://CDS.VizieR/J/A+A/675/A183doi:10.26093/cds/vizier.36750183CDSCabrera J.Gandolfi D.Serrano L.M.Csizmadia Sz.Egger J.A.,Baumeister P.Krenn A.Benz W.Deline A.Floren H.-G.,Collier Cameron A.Adibekyan V.Alibert Y.Bellomo S.E.Delrez L.,Fossati L.Fortier A.Grziwa S.Hoyer S.Bonfanti A.Salmon S.,Sousa S.G.Wilson T.G.Alarcon J.Alonso R.Anglada Escude G.,Barczy T.Barragan O.Barrado D.Barros S.C.C.Baumjohann W.Beck M.,Beck T.Bernabo L.M.Billot N.Bonfils X.Borsato L.Brandeker A.,Broeg C.Carrion-Gonzalez O.Charnoz S.Ciardi D.R.Cochran W.D.,Collins K.A.Collins K.I.Conti D.M.Davies M.B.Deeg H.J.Deleuil M.,Demangeon O.D.S.Demory B.-O.Ehrenreich D.Erikson A.Esposito M.,Fridlund M.Gillon M.Goffo E.Gudel M.Guenther E.W.Harre J.-V.,Heng K.Hooton M.J.Isaak K.G.Jenkins J.M.Kiss L.L.Knudstrup E.,Lam K.W.F.Laskat J.Lecavelier des Etangs A.Lendl M.Lovis C.,Luque R.Magrin D.Maxted P.F.L.Muresan A.Nascimbeni V.Olofsson G.,Osborn H.P.Osborne H.L.M.Ottensamer R.Pagano I.Palle E.,Persson C.M.Peter G.Piotto G.Pollacco D.Queloz D.Ragazzoni R.,Rando N.Rauer H.Redfield S.Ribas I.Ricker G.R.Rodler F.,Santos N.C.Scandariato G.Seager S.Segransan D.Simon A.E.,Smith A.M.S.Steller M.Szabo Gy.M.Thomas N.Tosi N.Twicken J.D.,Udry S.Van Eylen V.Van Grootel V.Walton N.A.Winn J.N.2024-11-06T20:05:00Z2023-07-19T07:48:26ZCDS support team

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

cds-question@unistra.frmultiple-starsexoplanetsphotometryvisible-astronomyGiant planets are known to dominate the long-term stability of planetary systems due to their prevailing gravitational interactions. But they are also thought to play an important role in planet formation. Observational constraints improve our understanding of planetary formation processes like the delivery of volatile-rich planetesimals from beyond the ice line into the inner planetary system. Additional constraints may come from studies of the atmosphere. But at the moment almost all studies of the atmosphere are just detection of certain species, not quantitative measurements of the abundances. Accurate measurements of planetary bulk parameters - mass and density - provide constraints on the inner structure and chemical composition of transiting planets. These provide insight into properties like the amount of volatiles, which in turn can be related to formation and evolution processes. The TESS mission reported a planetary candidate around HD 190622 (TOI-1054) which was subsequently validated and which deserved further characterization with photometric and spectroscopic facilities. The KESPRINT collaboration used HARPS data to independently confirm the planetary candidate, securing its mass, and revealing the presence of an outer giant planet in the system. The CHEOPS consortium invested telescope time in the transiting target in order to reduce the uncertainty of the radius, improving the characterization of the planet. We present the discovery and characterization of the planetary system around HD 190622 (TOI-1054), a system hosting one transiting planet which is smaller than Neptune (3.087^+0.058^_-0.053_R_Earth_, 7.7+/-1.0M_Earth_) but has a similar bulk density (1.43+/-0.21g/cm^3^) and an orbital period of 16 days; and a giant planet, not known to be transiting, with a minimum mass of 227.0+/-6.7M_Earth_ in an orbit with a period of 315 days. Our measurements constrain the structure and composition of the transiting planet. HD 190622b has singular properties among the known population of transiting planets that we discuss in detail. Among the sub-Neptune-sized planets known today, this planet stands out because of its large gas content.2023A&A...675A.183Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/675/A183CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/675/A183https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/675/A183http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/675/A183https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/675/A183https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/675/A183http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/675/A183GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/675/A183/photomTOI 1054 TESS and CHEOPS photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian datedtime.epochdoubleFluxNormalised detrended fluxphot.flux;arith.ratiodoublee_FluxNormalised flux errorstat.error;phot.fluxdoubleJ/A+A/675/A183/rvTOI 1054 HARPS radial velocitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian date (TDB)dtime.epochdoubleRVRadial velocitykm/sphys.veloc;pos.heliocentricdoublee_RVRadial velocity errorkm/sstat.errordouble