J/MNRAS/523/3069ivo://CDS.VizieR/J/MNRAS/523/3069doi:10.26093/cds/vizier.75233069CDSOsborn H.P.Nowak G.Hebrard G.Masseron T.Lillo-Box J.Palle E.,Bekkelien A.Floren H.-G.Guterman P.Simon A.E.Adibekyan V.,Bieryla A.Borsato L.Brandeker A.Ciardi D.R.Collier Cameron A.,Collins K.A.Egger J.A.Gandolfi D.Hooton M.J.Latham D.W.,Lendl M.Matthews E.C.Tuson A.Ulmer-Moll S.Vanderburg A.,Wilson T.G.Ziegler C.Alibert Y.Alonso R.Anglada G.Arnold L.,Asquier J.Barrado y Navascues D.Baumjohann W.Beck T.,Belinski A.A.Benz W.Biondi F.Boisse I.Bonfils X.Broeg C.,Buchhave L.A.Barczy T.Barros S.C.C.Cabrera J.Cardona Guillen C.,Carleo I.Castro-Gonzalez A.Charnoz S.Christiansen J.,Cortes-Zuleta P.Csizmadia S.Dalal S.Davies M.B.Deleuil M.,Delfosse X.Delrez L.Demory B.-O.Dunlavey A.B.Ehrenreich D.,Erikson A.Fernandes R.B.Fortier A.Forveille T.Fossati L.,Fridlund M.Gillon M.Goeke R.F.Goliguzova M.V.Gonzales E.J.,Guenther M.N.Guedel M.Heidari N.Henze C.E.Howell S.Hoyer S.,Frey J.I.Isaak K.G.Jenkins J.M.Kiefer F.Kiss L.Korth J.,Maxted P.F.L.Laskar J.Lecavelier des Etangs A.Lovis C.Lund M.B.,Luque R.Magrin D.Almenara J.M.Martioli E.Mecina M.Medina J.V.,Moldovan D.Morales-Calderon M.Morello G.Moutou C.Murgas F.,Jensen E.L.N.Nascimbeni V.Olofsson G.Ottensamer R.Pagano I.,Peter G.Piotto G.Pollacco D.Queloz D.Ragazzoni R.Rando N.,Rauer H.Ribas I.Ricker G.Demangeon O.D.S.Smith A.M.S.Santos N.,Scandariato G.Seager S.Sousa S.G.Steller M.Szabo G.M.,Segransan D.Thomas N.Udry S.Ulmer B.Van Grootel V.,Vanderspek R.Walton N.Winn J.N.2024-11-06T20:34:49Z2023-06-08T08:15:30ZCDS support team

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

cds-question@unistra.frmultiple-starsexoplanetsphotometryvisible-astronomyradial-velocityHIP 9618 (HD 12572, TOI-1471, TIC 306263608) is a bright (G=9.0mag) solar analogue. TESS photometry revealed the star to have two candidate planets with radii of 3.9+/-0.044 R_{Earth}_ (HIP 9618 b) and 3.343+/-0.039R_{Earth}_ (HIP 9618 c). While the 20.77291 d period of HIP 9618 b was measured unambiguously, HIP 9618 c showed only two transits separated by a 680-d gap in the time series, leaving many possibilities for the period. To solve this issue, CHEOPS performed targeted photometry of period aliases to attempt to recover the true period of planet c, and successfully determined the true period to be 52.56349 d. High-resolution spectroscopy with HARPS-N, SOPHIE, and CAFE revealed a mass of 10.0+/-3.1M_{Earth}_ for HIP 9618 b, which, according to our interior structure models, corresponds to a 6.8+/-1.4 per cent gas fraction. HIP 9618 c appears to have a lower mass than HIP 9618 b, with a 3-sigma upper limit of <18M_{Earth}_. Follow-up and archival RV measurements also reveal a clear long-term trend which, when combined with imaging and astrometric information, reveal a low-mass companion (0.08^+0.12^_-0.05_M_{sun}_) orbiting at 26.0^+19.0^_-11.0_au. This detection makes HIP 9618 one of only five bright (K<8mag) transiting multiplanet systems known to host a planet with P>50d, opening the door for the atmospheric characterization of warm (Teq<750K) sub-Neptunes.2023MNRAS.523.3069Ohttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/523/3069CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/523/3069https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/523/3069http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/523/3069https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/523/3069https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/523/3069http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/523/3069GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/MNRAS/523/3069/cheopsCHEOPS photometry and model fitsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFilekeyCHEOPS unique visit file key (filekey)meta.id;obscharTimeTime (BJD-2457000) (Time)time.epochdoubleFluxNormalised Flux (normalised to zero with variation in ppt) (Flux_ppt)phot.flux;arith.ratiodoublee_FluxNormalised Flux Error (Flux_err_ppt)stat.error;phot.fluxdoubleRollangleTelescope roll angle (Rollangle_deg)deginstr.offsetdoubleNormsinrollangleSin of roll angle normalised such that mu=0 & sigma=1 (Norm_sin_rollangle)instr.offsetdoubleNormcosrollangleCos of roll angle normalised such that mu=0 & sigma=1 (Norm_cos_rollangle)instr.offsetdoubleNormBGfluxBackground flux normalised such that mu=0 & sigma=1 (Norm_BG_flux)phot.flux;arith.ratiodoubleFluxCorModel-2sigModelled 2-sigma lower errors for decorrelation+polynomial (Flux_Cor_Model_-2sig)stat.errordoubleSplineCorModel-2sigModelled bspline model 2-sigma lower errors (Spline_Cor_Model_-2sig)stat.errordoublePlanetbModel-2sigModelled planet b transit model 2-sigma lower errors (Planet_b_Model_-2sig)stat.errorfloatPlanetcModel-2sigModelled planet c transit model 2-sigma lower errors (Planet_c_Model_-2sig)stat.errordoubleTotalModel-2sigCombined model w decorrelation+spline+transits -2-sigma (Total_Model_-2sig)stat.errordoubleFluxCorModel-1sigModelled 1-sigma lower errors for decorrelation+polynomial (Flux_Cor_Model_-1sig)stat.errordoubleSplineCorModel-1sigModelled bspline model 1-sigma lower errors (Spline_Cor_Model_-1sig)stat.errordoublePlanetbModel-1sigModelled planet b transit model 1-sigma lower errors (Planet_b_Model_-1sig)stat.errorfloatPlanetcModel-1sigModelled planet c transit model 1-sigma lower errors (Planet_c_Model_-1sig)stat.errordoubleTotalModel-1sigCombined model w decorrelation+spline+transits -1-sigma (Total_Model_-1sig)stat.errordoubleFluxCorModelmedModelled median/best-fit for decorrelation+polynomial (Flux_Cor_Model_med)stat.correlationdoubleSplineCorModelmedModelled bspline model model median/best-fit (Spline_Cor_Model_med)stat.paramdoublePlanetbModelmedModelled planet b transit model model median/best-fit (Planet_b_Model_med)stat.paramfloatPlanetcModelmedModelled planet c transit model model median/best-fit (Planet_c_Model_med)stat.paramdoubleTotalModelmedCombined model w decorrelation+spline+transits model median (Total_Model_med)stat.paramdoubleFluxCorModel+1sigModelled 1-sigma upper errors for decorrelation+polynomial (Flux_Cor_Model_+1sig)stat.errordoubleSplineCorModel+1sigModelled bspline model 1-sigma upper errors (Spline_Cor_Model_+1sig)stat.errordoublePlanetbModel+1sigModelled planet b transit model 1-sigma upper errors (Planet_b_Model_+1sig)stat.errorfloatPlanetcModel+1sigModelled planet c transit model 1-sigma upper errors (Planet_c_Model_+1sig)stat.errordoubleTotalModel+1sigCombined model w decorrelation+spline+transits +1-sigma (Total_Model_+1sig)stat.errordoubleFluxCorModel+2sigModelled 2-sigma upper errors for decorrelation+polynomial (Flux_Cor_Model_+2sig)stat.errordoubleSplineCorModel+2sigModelled bspline model 2-sigma upper errors (Spline_Cor_Model_+2sig)stat.errordoublePlanetbModel+2sigModelled planet b transit model 2-sigma upper errors (Planet_b_Model_+2sig)stat.errorfloatPlanetcModel+2sigModelled planet c transit model 2-sigma upper errors (Planet_c_Model_+2sig)stat.errordoubleTotalModel+2sigCombined model w decorrelation+spline+transits +2-sigma (Total_Model_+2sig)stat.errordoubleJ/MNRAS/523/3069/harpsnrvHARPS-N RV data and model fitsRVc-2sigModelled 2-sigma lower errors for planet c (rv_c_-2sig)m/sstat.errordoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTimeTime (BJD-2400000) (Time)time.epochdoubleRVRadial Velocity (RV_ms)m/sphys.veloc;pos.heliocentricdoublee_RVRadial Velocity Uncertainty (eRV_ms)m/sstat.errordoubleRVb-2sigModelled 2-sigma lower errors for planet b (rv_b_-2sig)m/sstat.errordoublebkg-2sigModelled 2-sigma lower errors for Background/trend model (bkg_-2sig)stat.errordoublemodel-2sigModelled 2-sigma lower errors for full model (pls+background) (model_-2sig)stat.errordoubleRVb-1sigModelled 1-sigma lower error for planet b (rv_b_-1sig)m/sstat.errordoubleRVc-1sigModelled 1-sigma lower error for planet c (rv_c_-1sig)m/sstat.errordoublebkg-1sigModelled 1-sigma lower error for Background/trend model (bkg_-1sig)stat.errordoublemodel-1sigModelled 1-sigma lower errors for full model (pls+background) (model_-1sig)stat.errordoubleRVbmedModel median/best-fit for planet b (rv_b_med)m/sphys.veloc;pos.heliocentricdoubleRVcmedModel median/best-fit for planet c (rv_c_med)m/sphys.veloc;pos.heliocentricdoublebkgmedModel median/best-fit for Background/trend model (bkg_med)stat.paramdoublemodelmedModel median/best-fit for full model (pls+background) (model_med)stat.paramdoubleRVb+1sigModelled 1-sigma upper errors for planet b (rv_b_+1sig)m/sstat.errordoubleRVc+1sigModelled 1-sigma upper errors for planet c (rv_c_+1sig)m/sstat.errordoublebkg+1sigModelled 1-sigma upper errors for Background/trend model (bkg_+1sig)stat.errordoublemodel+1sigModelled 1-sigma upper errors for full model (pls+background) (model_+1sig)stat.errordoubleRVb+2sigModelled 2-sigma upper errors for planet b (rv_b_+2sig)m/sstat.errordoubleRVc+2sigModelled 2-sigma upper errors for planet c (rv_c_+2sig)m/sstat.errordoublebkg+2sigModelled 2-sigma upper errors for Background/trend model (bkg_+2sig)stat.errordoublemodel+2sigModelled 2-sigma upper errors for full model (pls+background) (model_+2sig)stat.errordoubleJ/MNRAS/523/3069/sophiervSOPHIE RV data and model fitsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTimeTime (BJD-2400000) (Time)time.epochdoubleRVRadial Velocity (RV_ms)m/sphys.veloc;pos.heliocentricdoublee_RVRadial Velocity Uncertainty (eRV_ms)m/sstat.errordoubleRVb-2sigModelled 2-sigma lower errors for planet b (rv_b_-2sig)m/sstat.errordoubleRVc-2sigModelled 2-sigma lower errors for planet c (rv_c_-2sig)m/sstat.errordoublebkg-2sigModelled 2-sigma lower errors for Background/trend model (bkg_-2sig)stat.errordoublemodel-2sigModelled 2-sigma lower errors for full model (pls+background) (model_-2sig)stat.errordoubleRVb-1sigModelled 1-sigma lower error for planet b (rv_b_-1sig)m/sstat.errordoubleRVc-1sigModelled 1-sigma lower error for planet c (rv_c_-1sig)m/sstat.errordoublebkg-1sigModelled 1-sigma lower error for Background/trend model (bkg_-1sig)stat.errordoublemodel-1sigModelled 1-sigma lower errors for full model (pls+background) (model_-1sig)stat.errordoubleRVbmedModel median/best-fit for planet b (rv_b_med)m/sphys.veloc;pos.heliocentricdoubleRVcmedModel median/best-fit for planet c (rv_c_med)m/sphys.veloc;pos.heliocentricdoublebkgmedModel median/best-fit for Background/trend model (bkg_med)stat.paramdoublemodelmedModel median/best-fit for full model (pls+background) (model_med)stat.paramdoubleRVb+1sigModelled 1-sigma upper errors for planet b (rv_b_+1sig)m/sstat.errordoubleRVc+1sigModelled 1-sigma upper errors for planet c (rv_c_+1sig)m/sstat.errordoublebkg+1sigModelled 1-sigma upper errors for Background/trend model (bkg_+1sig)stat.errordoublemodel+1sigModelled 1-sigma upper errors for full model (pls+background) (model_+1sig)stat.errordoubleRVb+2sigModelled 2-sigma upper errors for planet b (rv_b_+2sig)m/sstat.errordoubleRVc+2sigModelled 2-sigma upper errors for planet c (rv_c_+2sig)m/sstat.errordoublebkg+2sigModelled 2-sigma upper errors for Background/trend model (bkg_+2sig)stat.errordoublemodel+2sigModelled 2-sigma upper errors for full model (pls+background) (model_+2sig)stat.errordoubleJ/MNRAS/523/3069/cafervCAFE RV data and model fitsTimeTime (BJD-2400000) (Time)time.epochdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRVRadial Velocity (RV_ms)m/sphys.veloc;pos.heliocentricdoublee_RVRadial Velocity Uncertainty (eRV_ms)m/sstat.errordoubleRVb-2sigModelled 2-sigma lower errors for planet b (rv_b_-2sig)m/sstat.errordoubleRVc-2sigModelled 2-sigma lower errors for planet c (rv_c_-2sig)m/sstat.errordoublebkg-2sigModelled 2-sigma lower errors for Background/trend model (bkg_-2sig)stat.errordoublemodel-2sigModelled 2-sigma lower errors for full model (pls+background) (model_-2sig)stat.errordoubleRVb-1sigModelled 1-sigma lower error for planet b (rv_b_-1sig)m/sstat.errordoubleRVc-1sigModelled 1-sigma lower error for planet c (rv_c_-1sig)m/sstat.errordoublebkg-1sigModelled 1-sigma lower error for Background/trend model (bkg_-1sig)stat.errordoublemodel-1sigModelled 1-sigma lower errors for full model (pls+background) (model_-1sig)stat.errordoubleRVbmedModel median/best-fit for planet b (rv_b_med)m/sphys.veloc;pos.heliocentricdoubleRVcmedModel median/best-fit for planet c (rv_c_med)m/sphys.veloc;pos.heliocentricdoublebkgmedModel median/best-fit for Background/trend model (bkg_med)stat.paramdoublemodelmedModel median/best-fit for full model (pls+background) (model_med)stat.paramdoubleRVb+1sigModelled 1-sigma upper errors for planet b (rv_b_+1sig)m/sstat.errordoubleRVc+1sigModelled 1-sigma upper errors for planet c (rv_c_+1sig)m/sstat.errordoublebkg+1sigModelled 1-sigma upper errors for Background/trend model (bkg_+1sig)stat.errordoublemodel+1sigModelled 1-sigma upper errors for full model (pls+background) (model_+1sig)stat.errordoubleRVb+2sigModelled 2-sigma upper errors for planet b (rv_b_+2sig)m/sstat.errordoubleRVc+2sigModelled 2-sigma upper errors for planet c (rv_c_+2sig)m/sstat.errordoublebkg+2sigModelled 2-sigma upper errors for Background/trend model (bkg_+2sig)stat.errordoublemodel+2sigModelled 2-sigma upper errors for full model (pls+background) (model_+2sig)stat.errordoubleJ/MNRAS/523/3069/lco_mcdLCO ground-based photometry [McDonald 1-meter]recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTimeHeliocentric Time (BJD-2400000)time.epochdoubleRelFluxRelative photometric flux (normalised to 1.0)phot.flux;arith.ratiodoublee_RelFluxRelative photometric flux errorstat.errordoubleJ/MNRAS/523/3069/lco_ctioLCO ground-based photometry [CTIO 1-meter]recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTimeHeliocentric Time (BJD-2400000)time.epochdoubleRelFluxRelative photometric flux (normalised to 1.0)phot.flux;arith.ratiodoublee_RelFluxRelative photometric flux errorstat.errordoubleJ/MNRAS/523/3069/lco_saaoLCO ground-based photometry [SAAO 1-meter]recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTimeHeliocentric Time (BJD-2400000)time.epochdoubleRelFluxRelative photometric flux (normalised to 1.0)phot.flux;arith.ratiodoublee_RelFluxRelative photometric flux errorstat.errordouble