J/A+A/589/A58ivo://CDS.VizieR/J/A+A/589/A58doi:10.26093/cds/vizier.35890058CDSEvans D.F.Southworth H.Maxted P.F.L.Skottfelt J.Hundertmark M.,Jorgensen U.G.Dominik M.Alsubai K.A.Andersen M.I.Bozza V.,Bramich D.M.Burgdorf M.J.Ciceri S.D'Ago G.Figuera Jaimes R.,Gu S.H.Haugbolle T.Hinse T.C.Juncher D.Kains N.Kerins E.,Korhonen H.Kuffmeier M.Peixinho N.Popovas A.Rabus M.Rahvar S.,Schmidt R.W.Snodgrass C.Starkey D.Surdej J.Tronsgaard R.,von Essen C.Wang Y.B.Wertz O.2017-11-29T11:48:07Z2016-04-14T08:56:01ZCDS support team

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

cds-question@unistra.frmultiple-starssolar-system-planetsastrometryphotometryWide binaries are a potential pathway for the formation of hot Jupiters. The binary fraction among host stars is an important discriminator between competing formation theories, but has not been well characterised. Additionally, contaminating light from unresolved stars can significantly affect the accuracy of photometric and spectroscopic measurements in studies of transiting exoplanets. We observed 101 transiting exoplanet host systems in the Southern hemisphere in order to create a homogeneous catalogue of both bound companion stars and contaminating background stars, in an area of the sky where transiting exoplanetary systems have not been systematically searched for stellar companions. We investigate the binary fraction among the host stars in order to test theories for the formation of hot Jupiters. Lucky imaging observations from the Two Colour Instrument on the Danish 1.54m telescope at La Silla were used to search for previously unresolved stars at small angular separations. The separations and relative magnitudes of all detected stars were measured. For 12 candidate companions to 10 host stars, previous astrometric measurements were used to evaluate how likely the companions are to be physically associated. We provide measurements of 499 candidate companions within 20 arcseconds of our sample of 101 planet host stars. 51 candidates are located within 5 arcseconds of a host star, and we provide the first published measurements for 27 of these. Calibrations for the plate scale and colour performance of the Two Colour Instrument are presented. We find that the overall multiplicity rate of the host stars is 38+17%, consistent with the rate among solar-type stars in our sensitivity range, suggesting that planet formation does not preferentially occur in long period binaries compared to a random sample of field stars. Long period stellar companions (P>10yr) appear to occur independently of short period companions, and so the population of close-in stellar companions is unconstrained by our study.2016A&A...589A..58Ehttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/589/A58CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/589/A58https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/589/A58http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/589/A58https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/589/A58https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/589/A58http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/589/A58GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/589/A58/table4 (Derived K-band distances to TEP host stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/589/A58/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/589/A58/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/589/A58/table4?GETtext/xml+votable180.050000true102.0798833-3.10213330.0055555555555555566/4241 8197 8237 12342 12424 16405 16432 17172 17226 18766 20780 20872 21254 21989 22001 22065 22078 22120 22168-22169 22816 24815 25153 25194 25604 25885 25950 26019 26062 29683 30009 30293 30344 30450-30451 30466 30485 31216 31541 33220 34526 34812 34898 36142 36794 37247 37329 37923 38452 38682 39487 39673 40862 42936 43625 43775 43847 44648 45051 45922 46058 47476 48358 48803 48945 49103https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/589/A58?format=asciiOpticaldefaultJ/A+A/589/A58/table4Derived K-band distances to TEP host starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameTarget namemeta.id;meta.maincharDistDistance to systempcpos.distancefloate_DistError in distancepcstat.errorfloatSimbadSimbad column added by the CDSmeta.ref.urlchar_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.mainJ/A+A/589/A58/table1Summary of observations of TEP host stars for 101 starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameTarget namemeta.id;meta.maincharBJDBarycentric Julian Datedtime.epochdoubleExpRedExposure time with red camerastime.duration;obs.exposure;em.opt.RintExpVis? Exposure time with visible camerastime.duration;obs.exposureintnullableJ/A+A/589/A58/table8Measured properties of all candidate companionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameTarget namemeta.id;meta.maincharCompIDID of the candidate companionmeta.idintSepSeparation between target and companionarcsecpos.angDistance;src.orbitalfloate_SepError in separationarcsecstat.errorfloatPAPosition angle of companion, measured from Ndegpos.posAngfloate_PAError in position angledegstat.errorfloatredmagBrightness in red relative to TEP hostmagphot.mag;em.opt.Rdoublee_redmagError in red brightnessmagstat.error;phot.mag;em.opt.Rfloatvismag? Brightness in visual relative to TEP hostmagphot.mag;em.opt.Vdoublenullablee_vismag? Error in visual brightnessmagstat.error;phot.magfloatnullableBJDBarycentric Julian Datedtime.epochdouble