J/ApJ/721/1829ivo://CDS.VizieR/J/ApJ/721/1829doi:10.26093/cds/vizier.17211829CDSAdams E.R.Lopez-Morales M.Elliot J.L.Seager S.Osip D.J.2017-06-27T06:37:58Z2012-08-06T12:16:28ZCDS support team

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

cds-question@unistra.frsolar-system-planetsvisible-astronomysloan-photometrymultiple-starsWe present six new transits of the hot Jupiter OGLE-TR-113b observed with MagIC on the Magellan Telescopes between 2007 January and 2009 May. We update the system parameters and revise the planetary radius to R_p_=1.084+/-0.029R_J_, where the error is dominated by stellar radius uncertainties. The new transit midtimes reveal no transit timing variations from a constant ephemeris of greater than 13+/-28s over two years, placing an upper limit of 1-2M_{earth}_ on the mass of any perturber in a 1:2 or 2:1 mean-motion resonance with OGLE-TR-113b. Combining the new transit epochs with five epochs published between 2002 and 2006, we find hints that the orbital period of the planet may not be constant, with the best fit indicating a decrease of dP/dt=-60+/-15ms/yr. If real, this change in period could result from either a long-period (more than eight years) timing variation due to a massive external perturber or more intriguingly from the orbital decay of the planet. The detection of a changing period is still tentative and requires additional observations, but if confirmed it would enable direct tests of tidal stability and dynamical models of close-in planets.2010ApJ...721.1829Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/721/1829CatalogResearchIsServedByTAP VizieR generic servicerelated-toII/278 : Transits observed in OGLE 2001-2003 (Udalski+, 2002-2004)J/MNRAS/422/2024 : Exoplanet evaporation (Jackson+, 2012)J/MNRAS/414/108 : Calibrator of exoplanet-host stars (Beust+, 2011)J/MNRAS/411/L46 : Exoplanet magnetic fields (Vidotto+, 2011)J/A+A/509/A4 : Transits of 12 exoplanet candidates (Pietrukowicz+, 2010)J/ApJ/692/L9 : Tidal evolution of transiting extrasolar planets (Levrard+,J/ApJ/666/475 : Extrasolar planet taxonomy (Marchi+, 2007)J/A+A/475/359 : Predicting radio fluxes of extrasolar planets (Griessmeier+,J/ApJ/649/1010 : Habitability of known exoplanetary systems (Jones+, 2006)J/A+A/458/997 : Abundances for transiting planet host stars (Santos+, 2006)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/721/1829https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/721/1829http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/721/1829https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/721/1829https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/721/1829http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/721/1829GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/ApJ/721/1829/table1New transit flux valuesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintUTCUTC mid-exposure datedtime.epochdoubleBJDBJD_TDB_ mid-exposure datedtime.epochdoubleFluxMagellan/MagIC relative flux in Sloan i'-bandphot.flux;arith.ratiodoublee_FluxError in Fluxstat.error;phot.fluxdouble