J/A+A/679/A70ivo://CDS.VizieR/J/A+A/679/A70CDSHagelberg J.Nielsen L.D.Attia O.Bourrier V.Pearce L.Venturini J.,Winn J.N.Bouchy F.Bouma L.G.Briceno C.Collins K.A.Davis A.B.,Eastman J.D.Evans P.Grieves N.Guerrero N.M.Hellier C.Jones M.I.,Latham D.W.Law N.Mann A.W.Marmier M.Ottoni G.Radford D.J.,Restori N.Rudat A.Dos Santos L.Seager S.Stassun K.Stockdale C.,Udry S.Wang S.Ziegler C.2023-11-08T07:15:35Z2023-11-08T07:17:13ZCDS support team

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

cds-question@unistra.frmultiple-starsexoplanetsg-starsradial-velocityvisible-astronomyWe report the discovery of a hot Jupiter on a 3.28-day orbit around a 1.08M_{sun}_ G0 star that is the secondary component in a loose binary system. Based on follow-up radial velocity observations of TOI-858 B with CORALIE on the Swiss 1.2m telescope and CHIRON on the 1.5m telescope at the Cerro Tololo Inter-American Observatory (CTIO), we measured the planet mass to be 1.10+/-0.08M_Jup_. Two transits were further observed with CORALIE to determine the alignment of TOI-858 B b with respect to its host star. Analysis of the Rossiter-McLaughlin signal from the planet shows that the sky-projected obliquity is lambda=99.3+/-3.8. Numerical simulations show that the neighbour star TOI-858 A is too distant to have trapped the planet in a Kozai-Lidov resonance, suggesting a different dynamical evolution or a primordial origin to explain this misalignment. The 1.15M_{sun}_ primary F9 star of the system (TYC 8501-01597-1, at rho~11'') was also observed with CORALIE in order to provide upper limits for the presence of a planetary companion orbiting that star.2023A&A...679A..70Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/679/A70CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/679/A70https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/679/A70http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/679/A70https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/679/A70https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/679/A70http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/679/A70GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/679/A70/tablea1CORALIE radial velocity follow-up observations of TOI-858 BrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian date (BJD-2400000)dtime.epochdoubleRVRadial velocitym/sphys.veloc;pos.heliocentricdoublee_RVRadial velocity errorm/sstat.errorfloatFWHMFWHM span of the CCFkm/sspect.line.widthdoubleContContrast span of the CCFstat.fit.paramfloatBISBissector span of the CCFm/sphys.velocfloatnoise? Photon noisestat.errordoublenullablesn10? Signal to noise in order 10stat.snrfloatnullablesn50? Signal to noise in order 50stat.snrfloatnullablesn60? Signal to noise in order 60stat.snrfloatnullablee_BISBissector span of the CCF errorm/sstat.errordoubleJ/A+A/679/A70/tablea2CHIRON radial velocity follow-up observations of TOI-858 Be_BISBissector span of the CCF errorm/sstat.errorfloatFWHMFWHM span of the CCFkm/sspect.line.widthfloate_FWHMFWHM span of the CCF errorkm/sstat.error;phys.angSizefloatTexpExposure timestime.duration;obs.exposureintFluxFluxctphot.flux.density;em.optintPID[523] PIDmeta.id;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian date (BJD-2400000)dtime.epochdoubleRVRelative radial velocitym/sphys.veloc;pos.heliocentricfloate_RVRelative radial velocity errorm/sstat.errorfloatBISBissector span of the CCFm/sphys.velocfloatJ/A+A/679/A70/tablea3CORALIE radial velocity follow-up observations of TOI-858 ArecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian date (BJD-2400000)dtime.epochdoubleRVRadial velocitym/sphys.veloc;pos.heliocentricdoublee_RVRadial velocity errorm/sstat.errorfloatFWHMFWHM span of the CCFkm/sspect.line.widthdoubleContContrast span of the CCFstat.fit.paramfloatBISBissector span of the CCFm/sphys.velocfloatnoisePhoton noisestat.errordoublesn10Signal to noise in order 10stat.snrfloatsn50Signal to noise in order 50stat.snrfloatsn60Signal to noise in order 60stat.snrfloat