J/ApJ/736/12ivo://CDS.VizieR/J/ApJ/736/12doi:10.26093/cds/vizier.17360012CDSBerta Z.K.Charbonneau D.Bean J.Irwin J.Burke C.J.Desert J.-M.,Nutzman P.Falco E.E.2017-06-27T06:38:24Z2013-01-23T07:01:40ZCDS support team

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

cds-question@unistra.frphotometrysolar-system-planetsm-starsmultiple-starsThe super-Earth GJ1214b transits a nearby M dwarf that exhibits a 1% intrinsic variability in the near-infrared. Here, we analyze new observations to refine the physical properties of both the star and planet. We present three years of out-of-transit photometric monitoring of the stellar host GJ1214 from the MEarth Observatory and find the rotation period to be long, most likely an integer multiple of 53 days, suggesting low levels of magnetic activity and an old age for the system. We show that such variability will not pose significant problems to ongoing studies of the planet's atmosphere with transmission spectroscopy. We analyze two high-precision transit light curves from ESO's Very Large Telescope (VLT) along with seven others from the MEarth and Fred Lawrence Whipple Observatory 1.2m telescopes, finding physical parameters for the planet that are consistent with previous work. The VLT light curves show tentative evidence for spot occultations during transit. Using two years of MEarth light curves, we place limits on additional transiting planets around GJ1214 with periods out to the habitable zone of the system. We also improve upon the previous photographic V-band estimate for the star, finding V=14.71+/-0.03.2011ApJ...736...12Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/736/12CatalogResearchIsServedByTAP VizieR generic servicerelated-toI/298 : LSPM-North Catalog (Lepine+ 2005)J/AJ/141/166 : HATNet variability survey of K and M dwarfs (Hartman+, 2011)J/other/A+ARV/17.251 : Stars observed with Doppler imaging (Strassmeier, 2009)J/AJ/135/785 : SDSS-DR5 low-mass star spectroscopic sample (West+, 2008)J/A+A/487/373 : Spectroscopic parameters of 451 HARPS-GTO stars (Sousa+, 2008)J/ApJ/622/1102 : The planet-metallicity correlation (Fischer+, 2005)J/A+A/331/581 : Rotation and activity in field M dwarfs (Delfosse+ 1998)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/736/12https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/736/12http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/736/12https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/736/12https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/736/12http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/736/12GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/ApJ/736/12/table1Transit light curvesFluxRelative flux (2)phot.flux;arith.ratiodoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBaryocentric Julian Date of mid-exposure (1)dtime.epochdoublee_FluxThe 1{sigma} uncertainty in Flux (3)stat.error;phot.fluxdoubleAirmassAirmassobs.airMassfloatInstTelescope system used (FLWO, MEARTH or VLT) (5)meta.id;instrcharCycleNumber of periods elapsed (4)meta.noteint