J/A+A/555/A92ivo://CDS.VizieR/J/A+A/555/A92doi:10.26093/cds/vizier.35550092CDSvon Essen C.Schroter S.Agol E.Schmitt J.H.M.M.2014-01-18T13:21:55Z2013-07-05T09:13:37ZCDS support team

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

cds-question@unistra.frmultiple-starssolar-system-planetsphotometryVariations in the timing of transiting exoplanets provide a powerful tool detecting additional planets in the system. Thus, the aim of this paper is to discuss the plausibility of transit timing variations on the Qatar-1 system by means of primary transit light curves analysis. Furthermore, we provide an interpretation of the timing variation. We observed Qatar-1 between March 2011 and October 2012 using the 1.2m OLT telescope in Germany and the 0.6m PTST telescope in Spain. We present 26 primary transits of the hot Jupiter Qatar-1b. In total, our light curves cover a baseline of 18 months. We also refine the ephemeris of Qatar-1b, which we find to be T0=2456157.42204+/-0.0001BJD_TDB_ and P=1.4200246+/-0.0000007 days, and improve the system orbital parameters.2013A&A...555A..92Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/555/A92CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/554/A28 : Qatar-1 differential light curve (Covino+, 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/555/A92https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/555/A92http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/555/A92https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/555/A92https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/555/A92http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/555/A92GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/555/A92/listList of light curvesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTelTelescope used (1)instr.setupcharDateObservation date (DD-DD/MM/YYYY)time.epoch;obsnullableETExposure timestime.duration;obs.exposureintFileNameName of the light curve file in "lc" subdirectorymeta.id;meta.filechartctransit curvemeta.ref.urlchar