J/AJ/164/118ivo://CDS.VizieR/J/AJ/164/118doi:10.26093/cds/vizier.51640118CDSIshitani Silva S.Ranc C.Bennett D.P.Bond I.A.Zang W.Abe F.,Barry R.K.Bhattacharya A.Fujii H.Fukui A.Hirao Y.Itow Y.,Kirikawa R.Kondo I.Koshimoto N.Matsubara Y.Matsumoto S.,Miyazaki S.Muraki Y.Olmschenk G.Okamura A.Rattenbury N.J.Satoh Y.,Sumi T.Suzuki D.Toda T.Tristram P.J.Vandorou A.Yama H.Petric A.,Burdullis T.Fouque P.Mao S.Penny M.T.Zhu W.Rau G.,Leading authorsThe MOA CollaborationThe CFHT Microlensing Collaboration2023-07-03T14:28:09Z2022-12-06T07:02:33ZCDS support team

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

cds-question@unistra.frgravitational-lensingexoplanetsinfrared-photometryvisible-astronomyphotometryWe report the light-curve analysis for the event MOA-2020-BLG-135, which leads to the discovery of a new Neptune-class planet, MOA-2020-BLG-135Lb. With a derived mass ratio of q=1.52_-0.31_^+0.39^x10^-4^ and separation s~1, the planet lies exactly at the break and likely peak of the exoplanet mass-ratio function derived by the Microlensing Observations in Astrophysics (MOA) Collaboration. We estimate the properties of the lens system based on a Galactic model and considering two different Bayesian priors: one assuming that all stars have an equal planet-hosting probability and the other that planets are more likely to orbit more-massive stars. With a uniform host mass prior, we predict that the lens system is likely to be a planet of mass m_p_=11.3_-6.9_^+19.2^M{Earth} and a host star of mass M_*_=0.23_-0.14_^+0.39^M{sun}, located at a distance D_L_=7.9_-1.0_^+1.0^kpc. With a prior that holds that planet occurrence scales in proportion to the host-star mass, the estimated lens system properties are m_p_=25_-15_^+22^M{Earth}, M_*_=0.53_-0.32_^+0.42^M{sun}, and D_L_=8.3_-1.0_^+0.9^kpc. This planet qualifies for inclusion in the extended MOA-II exoplanet microlens sample.2022AJ....164..118Ihttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/164/118CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJS/101/117 : UBVRIJHKLMNQ photometry in Taurus-Auriga (Kenyon+ 1995)J/A+A/533/A134 : Abundances of microlensed stars in the Bulge (Bensby+, 2011)J/other/Nat/481.167 : 2002-2007 PLANET microlensing events (Assan+, 2012)J/ApJ/778/150 : Microlensing events toward the Bulge from MOA-II (Sumi+, 2013)J/AJ/158/13 : The first 300 stars observed by the GPIES (Nielsen+, 2019)J/ApJS/254/39 : Exoplanet candidates from TESS first 2yr obs (Guerrero+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/164/118https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/164/118http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/164/118https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/164/118https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/164/118http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/164/118GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/AJ/164/118/fig1Combined table from original tablesBandObserved bandinstr.bandpasscharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintInstrInstrument usedmeta.id;instrcharHJDHeliocentric Julian Date of observation; HJD-2450000dtime.epochdoublemagMagnitude; Zpt=21magphot.mag;em.optfloate_magUncertainty in magmagstat.error;phot.magfloatfluxFlux in bandphot.flux;em.optdoublee_fluxUncertainty in fluxstat.error;phot.fluxdouble