J/A+A/675/A115ivo://CDS.VizieR/J/A+A/675/A115doi:10.26093/cds/vizier/bc-n3/lbbfCDSKorth J.Gandolfi D.Subjak J.Howard S.Ataiee S.Collins K.A.,Quinn S.N.Mustill A.J.Guillot T.Lodieu N.Smith A.M.S.Esposito M.,Rodler F.Muresan A.Abe L.Albrecht S.H.Alqasim A.Barkaoui K.,Beck P.G.Burke C.J.Butler R.P.Conti D.M.Collins K.I.Crane J.D.,Dai F.Deeg H.J.Evans P.Grziwa S.Hatzes A.P.Hirano T.Horne K.,Huang C.X.Jenkins J.M.Kabath P.Kielkopf J.F.Knudstrup E.,Latham D.W.Livingston J.Luque R.Mathur S.Murgas F.Osborne H.L.M.,Palle E.Persson C.M.Rodriguez J.E.Rose M.Rowden P.Schwarz R.P.,Seager S.Serrano L.M.Sha L.Shectman S.A.Shporer A.Srdoc G.,Stockdale C.Tan T.-G.Teske J.K.Van Eylen V.Vanderburg A.,Vanderspek R.Wang S.X.Winn J.N.2026-07-01T14:00:42Z2023-11-16T09:20:08ZCDS support team

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

cds-question@unistra.frmultiple-starsexoplanetsradial-velocityvisible-astronomyThe TOI-1130 is a known planetary system around a K-dwarf consisting of a gas giant planet, TOI-1130 c on an 8.4-day orbit that is accompanied by an inner Neptune-sized planet, TOI-1130 b, with an orbital period of 4.1 days. We collected precise radial velocity (RV) measurements of TOI-1130 with the HARPS and PFS spectrographs as part of our ongoing RV follow-up program. We performed a photodynamical modeling of the HARPS and PFS RVs, along with transit photometry from the Transiting Exoplanet Survey Satellite (TESS) and the TESS Follow-up Observing Program (TFOP). We determined the planet masses and radii of TOI-1130 b and TOI-1130 c to be M_b_=19.28+/-0.97M_Earth_ and R_b_=3.56+/-0.13R_Earth_, and M_c_=325.59+/-5.59M}_Earth_ and R_c=13.32_-1.41_^+1.55^R_{sun}_, respectively. We have spectroscopically confirmed the existence of TOI-1130 b, which had previously only been validated. We find that the two planets have orbits with small eccentricities in a 2:1 resonant configuration. This is the first known system with a hot Jupiter and an inner lower mass planet locked in a mean-motion resonance. TOI-1130 belongs to the small, yet growing population of hot Jupiters with an inner low-mass planet that poses a challenge to the pathway scenario for hot Jupiter formation. We also detected a linear RV trend that is possibly due to the presence of an outer massive companion.2023A&A...675A.115Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/675/A115CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/675/A115https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/675/A115http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/675/A115https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/675/A115https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/675/A115http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/675/A115GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/675/A115/tablea1Radial velocity measurements and spectroscopic activity indicators for TOI-1130 from HARPS spectrarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBaricentric Julian Date, TDB (BJD-2457000)dtime.epochdoubleRVRadial velocitym/sphys.veloc;pos.heliocentricdoublee_RVRadial velocity errorm/sstat.errorfloatBISBissector span of the cross-correlation functionm/sphys.velocfloatFWHMFWHM of the cross-correlation functionm/sspect.line.widthfloatSindexMont-Wilson S indexspect.indexfloate_SindexMont-Wilson S index errorstat.errorfloatS/NSignal-to-noise ratio at 550nmstat.snrfloattexpExposure timestime.duration;obs.exposureintJ/A+A/675/A115/tablea2Radial velocity measurements and spectroscopic activity indicators for TOI-1130 from PFS spectrarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBaricentric Julian Dare, TDB (BJD-2457000)dtime.epochdoubleRVRadial velocitym/sphys.veloc;pos.heliocentricfloate_RVRadial velocity errorm/sstat.errorfloatSindexMont-Wilson S index (1)spect.indexfloate_SindexMont-Wilson S index error (1)stat.errorfloatHaH{alpha}-index (1)spect.index;em.line.Halphafloate_HaH{alpha}-index error (1)stat.errorfloattexpExposure timestime.duration;obs.exposureint