J/A+A/690/A379ivo://CDS.VizieR/J/A+A/690/A379doi:10.26093/cds/vizier.36900379CDSKnudstrup E.Albrecht S.H.Winn J.N.Gandolfi D.Zanazzi J.,Persson C.M.Fridlund M.Marcussen M.L.Chontos A.Keniger M.A.F.,Eisner N.L.Bieryla A.Isaacson H.Howard A.W.Hirsch L.A.Murgas F.,Narita N.Palle E.Kawai Y.Baker D.2025-02-18T20:01:31Z2024-10-23T07:42:57ZCDS support team

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

cds-question@unistra.frmultiple-starsexoplanetsradial-velocityvisible-astronomyMeasurements of the obliquities in exoplanet systems have revealed some remarkable architectures, some of which are very different from the Solar System. Nearly 200 obliquity measurements have been obtained through observations of the Rossiter-McLaughlin (RM) effect. Here we report on observations of 19 planetary systems that led to 17 clear detections of the RM effect and 2 less secure detections. After adding the new measurements to the tally, we use the entire collection of RM measurements to investigate four issues that have arisen in the literature. i) Does the obliquity distribution show a peak at approximately 90{deg}? We find tentative evidence that such a peak does exist when restricting attention to the sample of sub-Saturn planets and hot Jupiters orbiting F stars. ii) Are high obliquities associated with high eccentricities? We find the association to be weaker than previously reported, and that a stronger association exists between obliquity and orbital separation, possibly due to tidal obliquity damping at small separations. iii) How low are the lowest known obliquities? Among hot Jupiters around cool stars, we find the dispersion to be 1.4+/-0.7{deg}, smaller than the 6{deg} obliquity of the Sun, which serves as additional evidence for tidal damping. iv) What are the obliquities of stars with compact and flat systems of multiple planets? We find that they generally have obliquities lower than 10{deg}, with several remarkable exceptions possibly caused by wide-orbiting stellar or planetary companions.2024A&A...690A.379Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/690/A379CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/690/A379https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/690/A379http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/690/A379https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/690/A379https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/690/A379http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/690/A379GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/690/A379/stars (List of studied stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/690/A379/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/690/A379/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/690/A379/stars?GETtext/xml+votable180.050000true203.510541753.72850.0055555555555555566/5170 5730 9651 11087 11722 16366 16512 17344 19829 21392 27056 33151 34423 36614 36667 43248 44335 47717https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/690/A379?format=asciiOpticaldefaultJ/A+A/690/A379/starsList of studied starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharRAJ2000Simbad right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Simbad declination (J2000)pos.eq.dec;meta.mainNNumber of radial velocity valuesmeta.numberintVCShow the Radial Velocity curvesmeta.ref.urlcharSNameSimbad namemeta.idcharJ/A+A/690/A379/rvRadial velocity tableTarget[0/17] Target numbermeta.idintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintInst[0/3] Instrument (1)meta.id;instrintBJDBarycentric Julian date (TDB)dtime.epochdoubleRVRadial velocitym/sphys.veloc;pos.heliocentricdoublee_RVRadial velocity errorm/sstat.errorfloatNameStar namemeta.id;meta.mainchar