J/AJ/161/108ivo://CDS.VizieR/J/AJ/161/108doi:10.26093/cds/vizier.51610108CDSSu L.-H.Jiang I.-G.Sariya D.P.Lee C.-Y.Yeh L.-C.Mannaday V.K.,Thakur P.Sahu D.K.Chand S.Shlyapnikov A.A.Moskvin V.V.Ignatov V.,Mkrtichian D.Griv E.2021-09-06T12:42:01Z2021-04-30T09:23:52ZCDS support team

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

cds-question@unistra.frexoplanetshigh-velocity-starsinfrared-photometryvisible-astronomyphotometryMotivated by the unsettled conclusion on whether there are any transit timing variations (TTVs) for the exoplanet Qatar-1b, 10 new transit light curves are presented and a TTV analysis with a baseline of 1400 epochs is performed. Because the linear model provides a good fit with a reduced chi-square of {chi}_red_^2^=2.59 and the false-alarm probabilities of the possible TTV frequencies are as large as 35%, our results are consistent with a null-TTV model. Nevertheless, a new ephemeris with a reference time of T0=2455647.63360{+/-}0.00008 (BJD) and a period of P=1.4200236{+/-}0.0000001day is obtained. In addition, the updated orbital semimajor axis and planetary radius in units of stellar radius are provided, and the lower limit of the modified stellar tidal quality factor is also determined.2021AJ....161..108Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/161/108CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/529/A75 : Limb-darkening coefficients (Claret+, 2011)J/AJ/142/84 : 10 new transit light curves of HAT-P-13b (Fulton+, 2011)J/A+A/554/A28 : Qatar-1 differential light curve (Covino+, 2013)J/AJ/145/68 : Five new transit light curves of TrES-3 (Jiang+, 2013)J/A+A/555/A92 : Transit timing variations on Qatar-1 (von Essen+, 2013)J/A+A/563/A41 : WASP-43 OSIRIS transmission spectroscopy (Murgas+, 2014)J/A+A/577/A109 : Transit times of Qatar-1b (Maciejewski+, 2015)J/AJ/151/17 : Eight transiting light curves of WASP-43b (Jiang+, 2016)J/A+A/588/L6 : WASP-12 transit light curves (Maciejewski+ 2016)J/AJ/154/4 : Times of transits and occultations of WASP-12b (Patra+, 2017)J/AcA/68/371 : WASP and KELT planet transits (Maciejewski+, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/161/108https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/161/108http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/161/108https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/161/108https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/161/108http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/161/108GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/AJ/161/108/table2The photometric light-curve data of this workrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObs[2014/2016] UT Year of the observation (1)time.epoch;obsBJD[2456912/2457635] Barycentric Julian Date; TDBdtime.epochdoubleFlux[0.968/1.02] Relative Flux in R-bandphot.flux;arith.ratiodoublee_Flux[0.0008/0.004] Uncertainty in RFluxstat.error;phot.fluxdouble