J/AJ/164/220ivo://CDS.VizieR/J/AJ/164/220doi:10.26093/cds/vizier.51640220CDSHagey S.R.Edwards B.Boley A.C.2023-03-20T14:26:56Z2022-12-19T07:47:58ZCDS support team

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

cds-question@unistra.frexoplanetsvisible-astronomyWe analyze a large number of citizen science data and identify eight hot Jupiter systems that show evidence for deviations from a constant orbital period: HAT-P-19b, HAT-P-32b, TrES-1b, TrES-2b, TrES-5b, WASP-4b, WASP-10b, and WASP-12b. The latter system is already well known to exhibit strong evidence for tidal orbital decay and serves as an important control for this study. Several other systems we identify have disputed period drifts in the literature, allowing the results here to serve as an independent analysis. The citizen science data are from the Exoplanet Transit Database (ETD), which is a global project established in 2008 by the Variable Star and Exoplanet Section of the Czech Astronomical Society. With over 400 planets and 12000 contributed observations spanning 15yr, the ETD is brimming with potential for studying the long-term orbital evolution of close-in hot Jupiters. We use our results to discuss prioritization of targets for follow-up investigations, which will be necessary to confirm the period drifts and their causes.2022AJ....164..220Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/164/220CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/692/L100 : Relative photometry of WASP-10 (Johnson+, 2009)J/ApJ/692/L9 : Tidal evolution transiting extrasolar planets (Levrard+, 2009)J/A+A/500/L45 : Observations of transits of TrES-2 exoplanet (Mislis+, 2009)J/A+A/508/1011 : Planetary transit of TrES-1 and TrES-2 (Rabus+, 2009)J/ApJ/691/1145 : Spectrophotometry of TrES-3 and TrES-4 (Sozzetti+, 2009)J/ApJ/726/52 : HAT-P-18 and HAT-P-19 follow-up (Hartman+, 2011)J/ApJ/742/59 : HAT-P-32 and HAT-P-33 follow-up (Hartman+, 2011)J/A+A/535/A7 : Transit light curves of WASP-10 b (Maciejewski+, 2011)J/AJ/145/68 : Five new transit light curves of TrES-3 (Jiang+, 2013)J/MNRAS/440/1470 : Ji light curves of WTS-2 (Birkby+, 2014)J/A+A/563/A40 : WASP-43b g'r'i'z'JHK light curves (Chen+, 2014)J/A+A/563/A41 : WASP-43 OSIRIS transmission spectroscopy (Murgas+, 2014)J/PASP/127/143 : WASP-39b and WASP-43b light curves (Ricci+, 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/AJ/154/4 : Times of transits and occultations of WASP-12b (Patra+, 2017)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/A+A/622/A81 : 15 hot Jupiter exoplanets light curves (Mallonn+, 2019)J/MNRAS/490/4230 : Transiting planet WASP-4b (Southworth+, 2019)J/ApJ/893/L29 : WASP-4 RVs & hot Jupiter predict period changes (Bouma+, 2020)J/AJ/159/150 : Transit times of 11 hot Jupiters (Patra+, 2020)J/ApJ/888/L5 : Transits, occultation times and RVs of WASP-12b (Yee+, 2020)J/A+A/656/A88 : TrES-5 photometric timeseries (Maciejewski+, 2021)J/AJ/161/72 : 180 Transit and occultation times for WASP-12b (Turner+, 2021)J/ApJS/259/62 : TESS transit timing of hot Jupiters (Ivshina+, 2022)J/ApJS/258/40 : ExoClock project II. New exoplanet ephemerides (Kokori+, 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)http://var2.astro.cz/ETD/index.php : Exoplanet Transit Databasehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/164/220https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/164/220http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/164/220https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/164/220https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/164/220http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/164/220GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/164/220/table3 (*Model comparison for secondary analysis of top 10 targets)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/164/220/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/164/220/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/164/220/table3?GETtext/xml+votable180.050000true97.636652829.67229610.0055555555555555566/2532 2596 13569 14914 15143 15550 24409 26771 32749 46437https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/164/220?format=asciiOpticaldefaultJ/AJ/164/220/table3*Model comparison for secondary analysis of top 10 targetsSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDPlanet identifiermeta.id;meta.maincharprimaryRate[-57.7/-1] Decay ratems/yrphot.count;em.X-rayfloate_Rate[0.7/7.3] Error on ratems/yrstat.errorfloatBIC-l[190/2354] Linear bayesian information criterionstat.fit.paramfloatBIC-d[181/1912] BIC decaystat.fit.paramfloatDBIC[-442/4.4] Delta BIC (1)stat.fit.paramfloatBIC-p[190/1930] BIC pressessionstat.fit.paramfloatNdataNumber of data sets for this planet (tableb1)meta.numberintnullable_RAPosition from SIMBAD (right ascension part)degpos.eq.ra;meta.mainnullable_DEPosition from SIMBAD (declination part)degpos.eq.dec;meta.mainnullableJ/AJ/164/220/tableb1Final cleaned data setsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDPlanet identifiermeta.id;meta.maincharEpoch[-1433/4643] Epochtime.epochintBJD[2452856/2459577] Transit Center, Barycentric Julian Date at TDBdtime.epochdoublee_BJD[5e-05/0.004] Uncertainty in Transit Centerdstat.errordoubleQual[1/3] Data Quality Flag (1=highest)meta.code.qualintObsObserver or referenceobs.observercharNoteAdditional or expanded observer listobs.observerchar