J/AJ/162/267ivo://CDS.VizieR/J/AJ/162/267doi:10.26093/cds/vizier.51620267CDSShin I.-G.Yee J.C.Hwang K.-H.Udalski A.Gould A.Albrow M.D.,Chung S.-J.Han C.Jung Y.K.Kim H.-W.Ryu Y.-H.Shvartzvald Y.,Zang W.Cha S.-M.Kim D.-J.Kim S.-L.Lee C.-U.Lee D.-J.Lee Y.,Park B.-G.Pogge R.W.Mroz P.Szymanski M.K.Skowron J.Poleski R.,Soszynski I.Pietrukowicz P.Kozlowski S.Ulaczyk K.Rybicki K.A.,Iwanek P.Wrona M.Gromadzki M.2022-09-06T14:01:35Z2022-03-18T06:17:55ZCDS support team

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

cds-question@unistra.frgravitational-lensinginfrared-photometryvisible-astronomyphotometryexoplanetsWe show that because the conditions for producing terrestrial microlens parallax (TPRX; i.e., a nearby disk lens) will also tend to produce a large lens-source relative proper motion ({mu}rel), source proper motion ({mu}S) measurements in general provide a strong test of TPRX signals, which Gould & Yee (2013) showed were an important probe of free-floating planet (FFP) candidates. As a case study, we report a single-lens/single-source microlensing event designated as OGLE-2019-BLG-1058. For this event, the short timescale (~2.5days) and very fast {mu}rel (~17.6mas/yr) suggest that this isolated lens is an FFP candidate located in the disk of our Galaxy. For this event, we find a TPRX signal consistent with a disk FFP, but at low significance. A direct measurement of the {mu}S shows that the large {mu}rel is due to an extreme {mu}S, and thus, the lens is consistent with being a very-low-mass star in the bulge and the TPRX measurement is likely spurious. By contrast, we show how a precise measurement of {mu}S with the mean properties of the bulge proper motion distribution would have given the opposite result; i.e., provided supporting evidence for an FFP in the disk and the TPRX measurement.2021AJ....162..267Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/162/267CatalogResearchIsServedByTAP VizieR generic servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)J/A+A/363/1081 : Non-linear limb-darkening law for LTE models (Claret 2000)J/AcA/50/421 : OGLE-II DIA BUL_SC1 field (Wozniak, 2000)J/AJ/133/1795 : Globulettes in four HII regions (Gahm+, 2007)J/A+A/533/A134 : Abundances of microlensed stars in the Bulge (Bensby+, 2011)J/ApJS/208/9 : Intrinsic colors and temperatures of PMS stars (Pecaut+, 2013)J/ApJ/783/121 : BANYAN II. Nearby young assoc. candidate memb (Gagne+, 2014)J/A+A/565/A107 : Globulettes in the Carina nebula (Grenman+, 2014)J/AJ/147/34 : SpeX library of L-type dwarfs (Schneider+, 2014)J/ApJS/216/7 : Planets Around Low-Mass Stars (PALMS). IV. (Bowler+, 2015)J/AJ/159/262 : OGLE/KMTnet VI photometry OGLE-2019-BLG-0551 (Mroz+, 2020)J/AJ/159/116 : I-band light curves of OGLE-2015-BLG-1771Lb (Zhang+, 2020)J/AJ/162/17 : KMTNet, MOA & OGLE light curve KMT-2019-BLG-0371 (Kim+, 2021)J/AJ/161/126 : I-band LC of microlensing event KMT-2017-BLG-2820 (Ryu+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/162/267https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/162/267http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/162/267https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/162/267https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/162/267http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/162/267GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/AJ/162/267/fig1Combined table from original tablesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTelInstrument used for the observationmeta.id;instrcharHJDHeliocentric Julian Date, HJD-2450000.0dtime.epochdoubleImagI-band magnitudemagphot.mag;em.opt.Idoublee_ImagError in Imagmagstat.error;phot.magdouble