J/ApJ/812/136ivo://CDS.VizieR/J/ApJ/812/136doi:10.26093/cds/vizier.18120136CDSBachelet E.Bramich D.M.Han C.Greenhill J.Street R.A.Gould A.,D'ago G.Alsubai K.Dominik M.Jaimes R.F.Horne K.Hundertmark M.,Kains N.Snodgrass C.Steele I.A.Tsapras Y.,(the Robonet collaboration)Albrow M.D.Batista V.Beaulieu J.-P.,Bennett D.P.Brillant S.Caldwell J.A.R.Cassan A.Cole A.,Coutures C.Dieters S.Dominis Prester D.Donatowicz J.Fouque P.,Hill K.Marquette J.-B.Menzies J.Pere C.Ranc C.Wambsganss J.,Warren D.(the Planet collaboration)Andrade De Almeida L.Choi J.-Y.,Depoy D.L.Dong S.Hung L.-W.Hwang K.-H.Jablonski F.Jung Y.K.,Kaspi S.Klein N.Lee C.-U.Maoz D.Munoz J.A.Nataf D.Park H.,Pogge R.W.Polishook D.Shin I.-G.Shporer A.Yee J.C.,(the {mu}fun collaboration)Abe F.Bhattacharya A.Bond I.A.,Botzler C.S.Freeman M.Fukui A.Itow Y.Koshimoto N.Ling C.H.,Masuda K.Matsubara Y.Muraki Y.Ohnishi K.Philpott L.C.,Rattenbury N.Saito TO.Sullivan D.J.Sumi T.Suzuki D.Tristram P.J.,Yonehara A.(the Moa collaboration)Bozza V.Calchi Novati S.,Ciceri S.Galianni P.Gu S.-H.Harpsoe K.Hinse T.C.Jorgensen U.G.,Juncher D.Korhonen H.Mancini L.Melchiorre C.Popovas A.,Postiglione A.Rabus M.Rahvar S.Schmidt R.W.Scarpetta G.,Skottfelt J.Southworth J.Stabile A.Surdej J.Wang X.-B.Wertz O.,(the Mindstep collaboration)2017-07-10T06:22:03Z2015-12-17T13:14:17ZCDS support team

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

cds-question@unistra.frvariable-starsphotometryFor all exoplanet candidates, the reliability of a claimed detection needs to be assessed through a careful study of systematic errors in the data to minimize the false positives rate. We present a method to investigate such systematics in microlensing data sets using the microlensing event OGLE-2013-BLG-0446 as a case study. The event was observed from multiple sites around the world and its high magnification (A_max_~3000) allowed us to investigate the effects of terrestrial and annual parallax. Real-time modeling of the event while it was still ongoing suggested the presence of an extremely low-mass companion (~3M_{Earth}_) to the lensing star, leading to substantial follow-up coverage of the light curve. We test and compare different models for the light curve and conclude that the data do not favor the planetary interpretation when systematic errors are taken into account.2015ApJ...812..136Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/812/136CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/812/136https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/812/136http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/812/136https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/812/136https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/812/136http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/812/136GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/ApJ/812/136/photom*Raw photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTelTelescope and filter (TEL_FILT) (1)instr.tel;instr.filtercharFiltFilter (2)meta.id;instr.filtercharHJDHeliocentric Julian date (HJD-2450000)dtime.epochdoublemagMagnitude in Filter (3)magphot.magfloate_magrms uncertainty on mag (3)magstat.error;phot.magfloat