J/AJ/164/198ivo://CDS.VizieR/J/AJ/164/198doi:10.26093/cds/vizier.51640198CDSMannaday V.K.Thakur P.Southworth J.Jiang I.-G.Sahu D.K.Mancini L.,Vanko M.Kundra E.Gajdos P.A-thano N.Sariya D.P.Yeh L.-C.Griv E.,Mkrtichian D.Shlyapnikov A.2023-03-20T14:32:22Z2022-12-13T09:04:54ZCDS support team

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

cds-question@unistra.frexoplanetsinfrared-photometryvisible-astronomyphotometryWe present and analyze 58 transit light curves of TrES-3b and 98 transit light curves of Qatar-1b, observed by the Transiting Exoplanet Survey Satellite, plus two transit light curves of Qatar-1b, observed by us, using a ground- based 1.23m telescope. These light curves are combined with the best-quality light curves taken from the Exoplanet Transit Database and the literature. The precisely determined midtransit times from these light curves enable us to obtain the refined orbital ephemerides, with improved precision, for both hot Jupiters. From the timing analysis, we find indications of the presence of transit timing variations (TTVs) in both systems. Since the observed TTVs are unlikely to be short-term and periodic, the possibility of additional planets in orbits close to TrES-3b and Qatar-1b is ruled out. The possible causes of long-term TTVs, such as orbital decay, apsidal precession, the Applegate mechanism, and line-of-sight acceleration, are also examined. However, none of these possibilities are found to explain the observed TTV of TrES-3b. In contrast to this, line-of-sight acceleration appears to be a plausible explanation for the observed TTV of Qatar-1b. In order to confirm these findings, further high-precision transit and radial velocity observations of both systems would be worthwhile.2022AJ....164..198Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/164/198CatalogResearchIsServedByTAP VizieR generic servicerelated-toIV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)J/ApJ/692/L9 : Tidal evolution transiting extrasolar planets (Levrard+, 2009)J/MNRAS/396/1023 : Transiting planetary system WASP-5 (Southworth+, 2009)J/ApJ/691/1145 : Spectrophotometry of TrES-3 and TrES-4 (Sozzetti+, 2009)J/MNRAS/408/1494 : Planetary transits of TrES-2 and TrES-3 (Colon+, 2010)J/A+A/529/A75 : Limb-darkening coefficients (Claret+, 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/ApJ/764/8 : APOSTLE r'-band transit lightcurves TrES-3b (Kundurthy+, 2013)J/A+A/551/A108 : Multi-site obs. of WASP-12 b transit (Maciejewski+, 2013)J/MNRAS/428/678 : Transit exoplanet TrES-3b CCD UBVR photometry (Turner+, 2013)J/A+A/555/A92 : Transit timing variations on Qatar-1 (von Essen+, 2013)J/A+A/564/A125 : AGN Torus model comparison of AGN in the CDFS (Buchner+, 2014)J/ApJ/785/126 : HIRES radial velocity measurements (Knutson+, 2014)J/MNRAS/444/776 : Transiting planets WASP-24, 25 and 26 (Southworth+, 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/A+A/602/A107 : 231 transiting planets eccentricity and mass (Bonomo+, 2017)J/A+A/600/A30 : Limb-darkening for TESS satellite (Claret, 2017)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)J/AJ/155/165 : Dissipation exoplanet hosts from tidal spin-up (Penev+, 2018)J/AJ/157/217 : Transit times of 5 hot Jupiter WASP exoplanets (Bouma+, 2019)J/MNRAS/490/4230 : Transiting planet WASP-4b (Southworth+, 2019)J/ApJ/893/L29 : WASP-4 RVs & hot Jupiter predicted Per changes (Bouma+, 2020)J/A+A/636/A98 : WASP-18A, WASP-19, WASP-77A photometry (Cortes-Zuleta+, 2020)J/AJ/160/209 : K2 & TESS Synergy. I. Param & LC, 4 stars (Ikwut-Ukwa+, 2020)J/AJ/159/150 : Transit times of 11 hot Jupiters (Patra+, 2020)J/AJ/160/96 : CORALIE and PFS radial velocities of HD 86226 (Teske+, 2020)J/ApJ/888/L5 : Transits, occultation times and RVs of WASP-12b (Yee+, 2020)J/AJ/162/210 : Transit Time Vartiations (TTVs) of WASP-43 (Davoudi+, 2021)J/A+A/656/A88 : TrES-5 photometric timeseries (Maciejewski+, 2021)J/AJ/161/108 : R-band light curve of Qatar-1 (Su+, 2021)J/AJ/161/72 : 180 Transit and occultation times for WASP-12b (Turner+, 2021)J/AJ/163/77 : R and B photometry of hot Jupiter HAT-P-37b (A-thano+, 2022)J/MNRAS/509/1447 : Light curves of KELT-16 (Mancini+, 2022)J/MNRAS/515/3212 : Transiting planet HATS-18b (Southworth+, 2022)J/AJ/163/281 : Radial velocity, transit & occultation WASP-4 (Turner+, 2022)J/AJ/163/175 : WASP-12 individual transit fit with TESS (Wong+, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/164/198https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/164/198http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/164/198https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/164/198https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/164/198http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/164/198GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/AJ/164/198/table1The transit light-curve data of TrES-3b and Qatar-1b considered in this workrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDObject Namemeta.id;meta.maincharTelTelescope Name; CAHA or TESSmeta.id;instr.telcharEpoch[1388/4006] Epoch numbermeta.idintBJD[2457618/2459634] Barycentric Julian date; TDB baseddtime.epochdoubleindexedNFlux[0.96/1.02] Normalized Fluxphot.flux;arith.ratiodoublee_NFlux[0.001/0.005] Uncertaintity in NFluxstat.errordoubleJ/AJ/164/198/bestfitBest-fit values of parameters for transit light curves of TrES-3b and Qatar-1b (table3+4)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEpochEpoch numbertime.epochintBJDMidtransit time in Barycentric Julian date; TDBdtime.epochdoubleE_BJDUpper 1{sigma} uncertainty in BJDdstat.error;stat.maxdoublee_BJDLower 1{sigma} uncertainty in BJDdstat.errordoubleiOrbital Inclination in degreedegsrc.orbital.inclinationfloatE_iUpper 1{sigma} uncertainty in orbital idegstat.error;stat.maxfloate_iLower 1{sigma} uncertainty in orbital idegstat.errorfloata/R*Scaled Semi-major axis in stellar radiussolRadphys.size.smajAxisfloatE_a/R*Upper 1{sigma} uncertainty in a/R*solRadstat.error;stat.maxfloate_a/R*Lower 1{sigma} uncertainty in a/R*solRadstat.errorfloatRp/R*Ratio of planet to star radiusphys.size;arith.ratiofloatE_Rp/R*Upper 1{sigma} uncertainty in Rp/R*stat.error;stat.maxfloate_Rp/R*Lower 1{sigma} uncertainty in Rp/R*stat.errorfloatu1Linear limb-darkening coefficientphot.limbDark;phys.polarization.linearfloatE_u1Upper 1{sigma} uncertainty in u1stat.error;stat.maxfloate_u1Lower 1{sigma} uncertainty in u1stat.errorfloatu2Quadratic limb-darkening coefficientphot.limbDark;phys.polarization.linearfloatE_u2Upper 1{sigma} uncertainty in u2stat.error;stat.maxfloate_u2Lower 1{sigma} uncertainty in u2stat.errorfloatIDObject identifiermeta.id;meta.maincharJ/AJ/164/198/midtransitMid-transit times and timing residuals for transit light curves of TrES-3b and Qatar-1b (table6+7)e_BJDLower 1{sigma} uncertainty in BJDdstat.errordoubleO-C? Timing residual of linear model fitdstat.fit.residual;pos.distance;stat.fit.paramdoublenullableTransTransit sourcemeta.bibcharTransBibADS bibcode for transit sourcemeta.bib.bibcodecharTimingMidtransit time sourcemeta.bibcharTimingBibADS bibcode for timing sourcemeta.bib.bibcodecharExcludedData Excluded from timing analysis (1)meta.codecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEpochEpoch numbertime.epochintBJDMidtransit time in Barycentric Julian date; TDBdtime.epochdoubleE_BJDUpper 1{sigma} uncertainty in BJDdstat.error;stat.maxdoubleIDObject identifiermeta.id;meta.mainchar