J/AJ/162/96ivo://CDS.VizieR/J/AJ/162/96doi:10.26093/cds/vizier.51620096CDSRyu Y.-H.Hwang K.-H.Gould A.Yee J.C.Albrow M.D.Chung S.-J.,Han C.Jung Y.K.Kim H.-W.Shin I.-G.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.2022-03-11T14:37:06Z2021-12-14T08:46:24ZCDS support team

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

cds-question@unistra.frgravitational-lensinginfrared-photometryvisible-astronomyphotometryexoplanetsWith a planet-host mass ratio q=0.012{+/-}0.001, KMT-2016-BLG-2605 has the shortest Einstein timescale, tE=3.41{+/-}0.13days, of any planetary microlensing event to date. This prompts us to examine the full sample of seven short (tE<7days) planetary events with good q measurements. We find that six have clustered Einstein radii {theta}E=115{+/-}20{mu}as and lens-source relative proper motions {mu}rel~9.5{+/-}2.5mas/yr. For the seventh, these two quantities could not be measured. These distributions are consistent with a Galactic bulge population of very low mass (VLM) hosts near the hydrogen-burning limit. This conjecture could be verified by imaging at first adaptive optics light on next-generation (30m) telescopes. Based on a preliminary assessment of the sample, "planetary" companions (i.e., below the deuterium-burning limit) are divided into "genuine planets," formed in their disks by core accretion, and VLM brown dwarfs, which form like stars. We discuss techniques for expanding the sample, which include taking account of the peculiar "anomaly-dominated" morphology of the KMT-2016-BLG-2605 light curve.2021AJ....162...96Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/162/96CatalogResearchIsServedByTAP VizieR generic servicerelated-toII/348 : VISTA Variable in the Via Lactea Survey DR2 (Minniti+, 2017)J/A+A/529/A102 : MOA-2007-BLG-387Lb light curve I band (Batista+, 2011)J/A+A/549/A147 : Abundances of microlensed bulge dwarf stars. V. (Bensby+,2013)J/ApJS/216/7 : Planets Around Low-Mass Stars (PALMS). IV. (Bowler+, 2015)J/A+A/605/A89 : Abundances microlensed Bulge dwarf stars. VI. (Bensby+, 2017)J/AJ/159/116 : I-band light curves of OGLE-2015-BLG-1771Lb (Zhang+, 2020)J/AJ/161/293 : LCs of OGLE-2018-BLG-0567 and OGLE-2018-BLG-0962 (Jung+, 2021)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/162/96https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/162/96http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/162/96https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/162/96https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/162/96http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/162/96GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/AJ/162/96/fig4Light curve for KMT-2016-BLG-2605recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObsKMT observatory (1)meta.id;instr.obstycharHJD[7439/7682] Heliocentric Julian Date; HJD-2450000dtime.epochdoubleImag[16.3/19.4] Apparent I band magnitudemagphot.mag;em.opt.Idoublee_Imag[0.005/1.5] Uncertainty in Imagmagstat.error;phot.magdouble