J/AcA/70/181ivo://CDS.VizieR/J/AcA/70/181doi:10.26093/cds/vizier.120700181CDSMaciejewski G.2025-09-25T20:16:39Z2021-03-25T08:24:07ZCDS support team

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

cds-question@unistra.frmultiple-starsexoplanetsphotometryOrigins of giant planets on tight orbits, so called hot Jupiters, are a long-lasting question in the planetary formation and evolution theory. The answer seems to be hidden in architectures of those systems that remain only partially understood. Using multi-sector time-series photometry from the Transiting Exoplanet Survey Satellite, we searched for additional planets in the KELT-18, KELT-23, KELT-24, Qatar-8, WASP-62, WASP-100, WASP-119, and WASP-126 planetary systems using both the transit technique and transit timing method. Our homogeneous analysis has eliminated the presence of transiting companions down to the terrestrial-size regime in the KELT-23 and WASP-62 systems, and down to mini-Neptunes or Neptunes in the remaining ones. Transit timing analysis has revealed no sign of either long-term trends or periodic perturbations for all the studied hot Jupiters, including the WASP-126 b for which deviations from a Keplerian model were claimed in the literature. The loneliness of the planets of the sample speaks in favor of the high-eccentricity migration mechanism that probably brought them to their tight orbits observed nowadays. As a by-product of our study, the transit light curve parameters were redetermined with a substantial improvement of the precision for six systems. For KELT-24 b, a joint analysis allowed us to place a tighter constraint on its orbital eccentricity.2020AcA....70..181Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AcA/70/181CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/AJ/153/263 : Transiting planetary system KELT-18 (McLeod+, 2017)J/AJ/158/78 : Transiting planetary system KELT-23 (Johns+, 2019)J/AJ/158/197 : Transiting planetary system KELT-24 (Rodriguez+, 2019)J/AJ/157/224 : Transiting planetary system Qatar-8 (Alsubai+, 2019)J/MNRAS/426/739 : Transiting planetary system WASP-62 (Hellier+, 2012)J/MNRAS/440/1982 : Transiting planetary system WASP-100 (Hellier+, 2014)J/A+A/591/55 : Planetary systems WASP-119 and WASP-126 (Maxted+, 2016)J/A+A/631/A76 : MASCARA-3b radial and light curves (Hjorth+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AcA/70/181https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AcA/70/181http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AcA/70/181https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AcA/70/181https://vizier.iucaa.in/viz-bin/votable?-source=J/AcA/70/181http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AcA/70/181GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/AcA/70/181/ttTransit mid-pointsEpEpochtime.epochintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAllDisplay all measurements for the exoplanetmeta.ref.urlcharPlanetPlanet namemeta.id;meta.maincharBJDMid-transit time (1)dtime.epochdoublee_BJDPositive error for BJDdstat.errordoubleE_BJDNegative error for BJDdstat.error;stat.maxdoubleDatasrcData source (2)meta.bibchar