J/MNRAS/505/1293ivo://CDS.VizieR/J/MNRAS/505/1293doi:10.26093/cds/vizier.75051293CDSShahaf S.Mazeh T.Zucker S. and Fabrycky D.2024-11-06T20:33:49Z2024-06-07T13:01:11ZCDS support team

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

cds-question@unistra.frexoplanetsmultiple-starsorbitsHolczer, Mazeh, and collaborators (Holczer et al. 2016ApJS..225....9H, Cat. J/ApJS/225/9) used the Kepler 4-yr observations to derive a transit-timing catalog, identifying 260 Kepler objects of interest (KOI) with significant transit timing variations (TTV). For KOIs with high enough S/Ns, HM+16 also derived the duration and depth of their transits. In this work, we use the duration measurements of HM+16 to systematically study the duration changes of 561 KOIs and identify 15 KOIs with a significant long-term linear change of transit durations and another 16 KOIs with an intermediate significance. We show that the observed linear trend is probably caused by a precession of the orbital plane of the transiting planet, induced in most cases by another planet. The leading term of the precession rate depends on the mass and relative inclination of the perturber, and the period ratio between the two orbits, but not on the mass and period of the transiting planet itself. Interestingly, our findings indicate that, as a sample, the detected time derivatives of the durations get larger as a function of the planetary orbital period, probably because short-period planetary systems display small relative inclinations. The results might indicate that short-period planets reside in relatively flattened planetary systems, suggesting these systems experienced stronger dissipation either when formed or when migrated to short orbits. This should be used as a possible clue for the formation of such systems.2021MNRAS.505.1293Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/505/1293CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/218/26 : Parameters of planets orbiting coolest dwarfs (Swift+, 2015)J/ApJS/225/9 : Kepler TTVs. IX. The full long-cadence data set (Holczer+,2016)J/AJ/152/158 : Final Kepler transiting planet search (DR25) (Twicken+, 2016)J/ApJS/234/9 : A spectral approach to transit timing variations (Ofir+, 2018)J/AJ/165/34 : Habitable Zone Exoplanets from NASA Archive (Hill+, 2023)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/505/1293https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/505/1293http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/505/1293https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/505/1293https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/505/1293http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/505/1293GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/505/1293/table1 (Transit details and variance analysis of the duration measurements for the 561 KOIs)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/505/1293/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/505/1293/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/505/1293/table1?GETtext/xml+votable180.050000true286.8084949.31641420.0055555555555555564/922-923 5/3646 3706 3731-3734 3742-3743 3776-3778 3781-3782 3784-3785 3787 3789 3792 6/14567 14573 14578-14582 14591 14730-14731 14733-14735 14744 14746 14750-14751 14794 14816 14818-14819 14828 14830 14918-14921 14923 14940 14942-14943 14945-14948 14950-14952 14955 14957-14962 14964 14966-14967 15040 15044 15057 15060-15061 15116 15118-15122 15132 15134-15135 15145-15147 15153-15155 15160-15161 15172-15174 15178 15232https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/505/1293?format=asciidefaultJ/MNRAS/505/1293/table1Transit details and variance analysis of the duration measurements for the 561 KOIsSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintKOIKOI number ID (KOI) (1)meta.id;meta.mainfloatPeriodOrbital transit period (Period) (1)dtime.perioddoubleDurationDuration time of the measurement (Duration) (1)htime.epochfloatbImpact parameter (b) (1)src.impactParamfloatRpPlanetary radius (Rp) (1)(6.3781x10+6m)phys.angSize;srcfloatsigmaMedian absolute deviation of the transit durations (sigma)minstat.stdevfloatDeltaMedian of the reported duration uncertainty of the transit durations (delta)minstat.stdevfloatdT/dtDerived linear trend of the transit duration (Tdot)min/yrstat.fit.paramfloate_dT/dtMean error on dTd/dt (Tdot_err)min/yrstat.errorfloatp-valueProbability that the fitted slope was consistent with zero (p-value)arith.grad;stat.probability;meta.modelleddoubleAbbeAbbe statistic value of the duration measurements before subtracting the best-fitting linear trend (Abbe)stat.fit.paramfloatAbbe-resAbbe statistic value of the duration measurements after subtracting the best-fitting linear trend (Abbe-residual)stat.fit.paramfloatNNumber of transits with a duration measurement (N)meta.numberint_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main