J/AJ/137/4911ivo://CDS.VizieR/J/AJ/137/4911doi:10.26093/cds/vizier.51374911CDSFernandez J.M.Holman M.J.Winn J.N.Torres G.Shporer A.Mazeh T.,Esquerdo G.A.Everett M.E.2009-09-20T11:20:06Z2009-09-20T11:13:26ZCDS support team

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

cds-question@unistra.frvariable-starssolar-system-planetsphotometryWe present photometry of six transits of the exoplanet XO-2b. By combining the light-curve analysis with theoretical isochrones to determine the stellar properties, we find the planetary radius to be 0.996^+0.031^_-0.018_R_Jup_ and the planetary mass to be 0.565+/-0.054M_Jup_. These results are consistent with those reported previously, and are also consistent with theoretical models for gas giant planets. The midtransit times are accurate to within 1 minute and are consistent with a constant period. However, the period we derive differs by 2.5{sigma } from the previously published period. More data are needed to tell whether the period is actually variable (as it would be in the presence of an additional body) or if the timing errors have been underestimated.2009AJ....137.4911Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/137/4911CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJ/652/1715 : Four transits of the exoplanet XO-1b (Holman+, 2006)J/AJ/133/11 : Photometry of OGLE-TR 111 (Winn+, 2007)J/ApJ/657/1098 : Transit of TrES-1 (Winn+, 2007)J/ApJ/655/1103 : Five transits of the exoplanet OGLE-TR-10b (Holman+, 2007)J/AJ/133/1828 : Transit light curves of HD 189733 (Winn+, 2007)J/ApJ/664/1185 : Three transits of the exoplanet TrES-2 (Holman+, 2007)J/AJ/134/1707 : Six transit of exoplanet HAT-P-1b (Winn+, 2007)J/AJ/136/267 : Six occultations of the exoplanet TrES-3 (Winn+, 2008)J/ApJ/683/1076 : Transits of exoplanet XO-3b (Winn+, 2008)J/ApJ/693/794 : Transit of exoplanet HD 17156b (Winn+, 2009)J/AJ/137/3826 : Two transits of the giant planet WASP-4b (Winn+, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/137/4911https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/137/4911http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/137/4911https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/137/4911https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/137/4911http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/137/4911GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/AJ/137/4911/table2Transit light curveRfluxRelative fluxphot.flux;arith.ratiodoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObs.DateObservation date (1)time.epoch;obsnullableFilt[zn] Filter (SDSS z or n for 'no filter')src.redshift;instr.filtercharHJDHeliocentric Julian Datedtime.epochdouble