J/A+A/624/A15ivo://CDS.VizieR/J/A+A/624/A15doi:10.26093/cds/vizier.36240015CDSSun L.Ioannidis P.Gu S.G.Schmitt J.H.M.M.Wang X.B.,Kouwenhoven M.B.N.2019-04-08T14:33:11Z2019-04-02T08:25:34ZCDS support team

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

cds-question@unistra.frmultiple-starsexoplanetsWe present a detailed characterization of the Kepler-411 system (KOI 1781). This system was previously known to host two transiting planets: one with a period of 3 days (R=2.4R_{Earth}_; Kepler-411b) and one with a period of 7.8days (R=4.4R_{Earth}_; Kepler-411c), as well as a transiting planetary candidate with a 58-day period (R=3.3R_{Earth}_; KOI 1781.03) from Kepler photometry. Here, we combine Kepler photometry data and new transit timing variation (TTV) measurements from all the Kepler quarters with previous adaptive-optics imaging results, and dynamical simulations, in order to constrain the properties of the Kepler-411 system. From our analysis, we obtain masses of 25.6+/-2.6M_{Earth}_ for Kepler-411b and 26.4+/-5.9M_{Earth}_ for Kepler-411c, and we confirm the planetary nature of KOI 1781.03 with a mass of 15.2+/-5.1M_{Earth}_, hence the name Kepler-411d. Furthermore, by assuming near-coplanarity of the system (mutual inclination below 30{deg}), we discover a nontransiting planet, Kepler-411e, with a mass of 10.8+/-1.1M_{Earth}_ on a 31.5-day orbit, which has a strong dynamical interaction with Kepler-411d. With densities of 1.71+/-0.39g/cm^3^ and 2.32+/-0.83g/cm^3^, both Kepler-411c and Kepler-411d belong to the group of planets with a massive core and a significant fraction of volatiles. Although Kepler-411b has a sub-Neptune size, it belongs to the group of rocky planets.2019A&A...624A..15Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/624/A15CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/624/A15https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/624/A15http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/624/A15https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/624/A15https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/624/A15http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/624/A15GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/624/A15/table2The mid-transit times of the transit events of Kepler-411 drecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCycleOrbital cycleobs.proposal.cycleintn_Cycle[odft ] Note on Cyle (1)meta.notecharDateDate (BJD-2454833, TDB)dtime.epochdoublee_DateUncertainty on Datedstat.error;time.epochdouble(O-C)Observed minus computeddtime;arith.diffdoubleJ/A+A/624/A15/table3The mid-transit times of the transit events of Kepler-411 brecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCycleOrbital cycleobs.proposal.cycleintn_Cycle[odft ] Note on Cyle (1)meta.notecharDateDate (BJD-2454833, TDB)dtime.epochdoublee_DateUncertainty on Datedstat.error;time.epochdouble(O-C)Observed minus computeddtime;arith.diffdoubleJ/A+A/624/A15/table4The mid-transit times of the transit events of Kepler-411 crecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCycleOrbital cycleobs.proposal.cycleintn_Cycle[odft ] Note on Cyle (1)meta.notecharDateDate (BJD-2454833, TDB)dtime.epochdoublee_DateUncertainty on Datedstat.error;time.epochdouble(O-C)Observed minus computeddtime;arith.diffdouble