J/AJ/170/336ivo://CDS.VizieR/J/AJ/170/336CDSIm H.Saidel M.Knutson H.A.Greklek-McKeon M.Vissapragada S.,Collins K.A.Fukui A.Narita N.Paragas K.Schwarz R.P.Shporer A.,Srdoc G.2026-09-02T14:32:46Z2026-09-02T15:31:03ZCDS support team

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

cds-question@unistra.frexoplanetsinfrared-photometryvisible-astronomyIt is relatively rare for gas giant planets to have resonant or near-resonant companions, but these systems are particularly useful for constraining planet formation and migration models. In this study, we examine Kepler-1624b, a sub-Saturn orbiting an M dwarf that was previously found to exhibit transit timing variations (TTVs) with an amplitude of approximately 2 minutes, suggesting the presence of a nearby nontransiting companion. We reanalyze the transits from archival Kepler data and extend the TTV baseline by 11yr by combining TESS data with three new ground-based transit observations from Palomar and Las Cumbres Observatories. We jointly fit these datasets and find that the TTV amplitude is significantly weaker in our updated analysis. We calculate the Bayes factor for a one-planet versus two-planet model and find that the one-planet model is preferred. Our results highlight the need for careful analysis of systems with relatively low amplitude TTV signals that are identified in large automated catalogs.2025AJ....170..336Ihttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/170/336CatalogResearchIsServedByTAP VizieR generic servicerelated-toIV/39 : TESS Input Catalog version 8.2 (TIC v8.2) (Paegert+, 2021)V/133 : Kepler Input Catalog (Kepler Mission Team, 2009)J/ApJ/771/129 : Submillimetric Class II sources of Taurus (Andrews+, 2013)J/A+A/549/A109 : HARPS XXXI. The M-dwarf sample (Bonfils+, 2013)J/ApJ/807/45 : Potentially habitable planets orbit. M dwarfs (Dressing+, 2015)J/ApJS/225/9 : Kepler TTVs. IX. The full long-cadence data set (Holczer+, 2016)J/ApJ/822/86 : False positive proba. for Q1-Q17 DR24 KOIs (Morton+, 2016)J/AJ/152/158 : Final Kepler transiting planet search (DR25) (Twicken+, 2016)J/ApJ/834/17 : Mass & radius of planets, moons, low mass stars (Chen+, 2017)J/ApJS/229/30 : Revis. stellar propert. of Q1-17 Kepler targets (Mathur+, 2017)J/other/RAA/19.41 : TTVs & linear ephem. of Kepler exoplanets (Gajdos+, 2019)J/ApJ/892/31 : Teff and metallicities of M dwarfs in APOGEE DR14 (Birky+, 2020)J/AJ/164/81 : Radial velocity and photometric flux of TOI-3757 (Kanodia+, 2022)J/MNRAS/510/3449 : KOI planets and KIC stars from Kepler DR25 (Bashi+, 2022)J/AJ/165/48 : Transit times for Kepler-289 b, c and d (Greklek-McKeon+, 2023)J/AJ/165/120 : g and i'-band light curve of TOI-5205 with SDSS (Kanodia+, 2023)J/AJ/166/11 : Stellar properties & RV variability for M-dwarfs (Pass+, 2023)J/A+A/670/A139 : CARMENES search for exoplanets around M dwarfs (Ribas+, 2023)J/A+A/689/A250 : Kepler DR25 transit & detec. prob. (Castro-Gonzale+, 2024)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/170/336https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/170/336http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/170/336https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/170/336https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/170/336http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/170/336GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/AJ/170/336/table2Observed transits of Kepler-1624brecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintInstInstrument/source (Source) (1)meta.id;instrcharEpoch[0/1367] Epoch numbertime.epochintTmid[6109/10608] Observed midtime for epoch; BJD-2450000 (midtime)dtime.epochdoublee_Tmid[3.9e-4/1.5e-3] Uncertainty in Tmid (e_midtime)dstat.error;time.epochdouble