J/AJ/161/21ivo://CDS.VizieR/J/AJ/161/21doi:10.26093/cds/vizier.51610021CDSColton N.M.Horch E.P.Everett M.E.Howell S.B.Davidson J.W.,Baptista B.J.Casetti-Dinescu D.I.2022-09-30T21:58:11Z2021-03-12T08:53:24ZCDS support team

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

cds-question@unistra.frmultiple-starsvisible-astronomyastrometryproper-motionstrigonometric-parallaxThe Kepler mission and subsequent ground-based follow-up observations have revealed a number of exoplanet host stars with nearby stellar companions. This study presents speckle observations of 57 Kepler objects of interest (KOIs) that are also double stars, each observed over a 3-8yr period, which has allowed us to track their relative motions with high precision. Measuring the position angle and separation of the companion with respect to the primary can help determine if the pair exhibits common proper motion, indicating it is likely to be a bound binary system. We report on the motions of 34 KOIs that have close stellar companions, three of which are triple stars, for a total of 37 companions studied. Eighteen of the 34 systems are confirmed exoplanet hosts, including one triple star, while four other systems have been subsequently judged to be false positives and twelve are yet to be confirmed as planet hosts. We find that 21 are most likely to be common proper motion pairs, 4 are line-of-sight companions, and 12 are of an uncertain disposition at present. The fraction of the confirmed exoplanet host systems that are common proper motion pairs is approximately 86% in this sample. In this subsample, the planets are exclusively found with periods of less than 110 days, so that in all cases the stellar companion is found at a much larger separation from the planet host star than the planet itself. A preliminary period-radius relation for the confirmed planets in our sample suggests no obvious differences at this stage with the full sample of known exoplanets.2021AJ....161...21Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/161/21CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/simbad : Simbad objects catalogue (M.Wenger 2000)I/259 : The Tycho-2 Catalogue (Hog+ 2000)B/wds : The Washington Visual Double Star Catalog (Mason+ 2001-2020)I/347 : Distances to 1.33 billion stars in Gaia DR2 (Bailer-Jones+, 2018)I/345 : Gaia DR2 (Gaia Collaboration, 2018)J/PASP/110/863 : A Stellar Spectral Flux Library: 1150 - 25000 A (Pickles 1998)J/ApJS/190/1 : A survey of stellar families (Raghavan+, 2010)J/AJ/141/45 : Speckle observations of HIP stars (Horch+, 2011)J/AJ/142/19 : Speckle observations of KOI (Howell+, 2011)J/AJ/150/151 : DSSI obs. of binaries. VI. Measures in 2014 (Horch+, 2015)J/ApJ/813/130 : Kepler multiple transiting planet systems (Wang+, 2015)J/ApJ/813/130 : Kepler multiple transiting planet systems (Wang+, 2015)J/AJ/152/8 : Impact stellar multiplicity planetary systems I (Kraus+, 2016)J/AJ/153/25 : Near-infrared observations of 84 KOI systems (Atkinson+, 2017)J/AJ/154/109 : California-Kepler Survey. III. Planet radii (Fulton+, 2017)J/AJ/153/71 : Kepler follow-up observation program I. Imaging (Furlan+,2017)J/AJ/153/117 : KOIs companions from high-resolution imaging (Hirsch+, 2017)J/AJ/153/212 : Observations of binary stars at WIYN telescope (Horch+, 2017)J/AJ/155/136 : Planets orbiting bright stars K2 campaigns 0-10 (Mayo+, 2018)J/AJ/156/83 : Effect of stellar companions planetary systems (Ziegler+,2018)J/AJ/158/113 : Kepler-13AB aperture photometry (Howell+, 2019)J/A+A/623/A117 : Galactic Cepheids & RR Lyrae multiplicity. II (Kervella+,2019)J/AJ/159/19 : SOAR TESS survey. I. (Ziegler+, 2020)http://exofop.ipac.caltech.edu/ : Kepler Follow-up Observing Programhttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/161/21https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/161/21http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/161/21https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/161/21https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/161/21http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/161/21GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/161/21/table1 (KOI double star Speckle measures)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/161/21/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/161/21/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/161/21/table1?GETtext/xml+votable180.050000true286.8084949.31641420.0055555555555555566/14567 14579 14581 14586 14734 14752 14762-14763 14767 14771-14772 14824-14825 14918 14921 14928 14942 14947-14948 14953 14966 14969 14975 15045 15114 15133 15137 15139-15140 15143 15146-15147 15155 15158 15168 15174 15200https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/161/21?format=asciiOpticaldefaultJ/AJ/161/21/table1KOI double star Speckle measuresSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintKOIKepler Object of Interest numbermeta.id.part;meta.mainintprimaryCompComponent identifier, if the system is triplemeta.id.part;meta.maincharKeplerKepler exoplanet system numbermeta.id.crosscharWDSWashington Double Star number, based on J2000 position, HHMMm+DDMMmeta.id.crosscharDate[10.4/17.4] Besselian date of the observation, offset 2000+yrtime.epoch;obsfloatPA[21.2/355] Position angle of the secondary star relative to the primary (1)degpos.posAngfloatSep[0.06/2] Separation of the two starsarcsecpos.angDistance;src.orbitalfloatl_dmaglimit flag on dmagmeta.code.errorchardmag[0/6.09] Magnitude differencemagphot.mag;arith.difffloatlambda[562/880] Center wavelength of the filter usednmem.wl;instr.filterintFWMH[40/50] Full width at half maximum of the filter transmissionnmspect.line.widthintNotesTelescope, Instrument, and Notes (2)meta.notechar_RAPosition from SIMBAD (right ascension part)degpos.eq.ra;meta.mainnullable_DEPosition from SIMBAD (declination part)degpos.eq.dec;meta.mainnullableJ/AJ/161/21/table2Proper motions for KOIs observed in at least 3 epochsKOIKepler Object of Interest numbermeta.id.part;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCompComponent identifier, if the system is triplemeta.id.part;meta.maincharKepler? Kepler number, if a confirmed exoplanet host (1)meta.id.crossintnullablef_KeplerDisposition if unconfirmed (1)meta.codecharDpmRA[-19.7/4.16] Speckle relative proper motion in right ascensionmas/yrpos.pm;pos.eq.ra;arith.difffloate_DpmRA[0.11/8.7] Uncertainty in the speckle relative proper motion in right ascensionmas/yrstat.errorfloatDpmDE[-43/7.02] Speckle relative proper motion in declinationmas/yrpos.pm;pos.eq.dec;arith.difffloate_DpmDE[0.16/5.7] Uncertainty in the speckle relative proper motion in declinationmas/yrstat.errorfloatpmRA[-145/27] System proper motion in right ascensionmas/yrpos.pm;pos.eq.radoublee_pmRA[0.03/8] Uncertainty in the system proper motion in right ascensionmas/yrstat.error;pos.pm;pos.eq.rafloatpmDE[-401/35.7] System proper motion in declinationmas/yrpos.pm;pos.eq.decdoublee_pmDE[0.04/8] Uncertainty in the system proper motion in declinationmas/yrstat.error;pos.pm;pos.eq.decfloatplx[0.56/8.73]? Parallaxmaspos.parallax.trigfloatnullablee_plx[0.02/1.16]? Uncertainty in the parallaxmasstat.error;pos.parallaxfloatnullableRefSource for system proper motion and parallax (2)meta.bibcharJ/AJ/161/21/table3Final properties of 37 KOI double Star componentsE_Dist[0.4/2181]? Error bar in the distance measure in the positive directionpcstat.error;stat.maxfloatnullablee_Dist[0.4/946]? Error bar in the distance measure in the negative directionpcstat.errorfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintKOIKepler Object of Interest numbermeta.id.part;meta.mainintCompComponent identifier, if the star is triplemeta.id.part;meta.maincharKepler? Kepler number (1)meta.id.crossintnullablef_KeplerDisposition if unconfirmed (1)meta.codecharNp[1/4]? Number of planetsmeta.numberintnullableDist[114/1946]? Distance to the systempcpos.distancefloatnullableM1[0.24/2] Estimated Mass of the Primary Star (2)solMassphys.massfloatM2[0.22/1.48] Estimated Mass of the Secondary Star (2)solMassphys.massfloatf_M2X=not a CPM pair (3)meta.codecharR1[0.008/1.95] The ratio R1 for the systemphot.flux;arith.ratiofloate_R1[0.004/1.02]The uncertainty in R1stat.errorfloatR2[0.3/309]? The ratio R2 for the systemphot.flux;arith.ratiofloatnullablee_R2[0.08/184]? The uncertainty in R2stat.errorfloatnullableNotesThe final determination of motion of the systemmeta.notechar