J/ApJ/718/1353ivo://CDS.VizieR/J/ApJ/718/1353doi:10.26093/cds/vizier.17181353CDSIrwin J.Buchhave L.Berta Z.K.Charbonneau D.Latham D.W.Burke C.J.,Esquerdo G.A.Everett M.E.Holman M.J.Nutzman P.Berlind P.,Calkins M.L.Falco E.E.Winn J.N.Johnson J.A.Gazak J.Z.2017-06-19T07:58:16Z2012-09-23T14:46:47ZCDS support team

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

cds-question@unistra.frmultiple-starsphotometryWe report the discovery of an eclipsing companion to NLTT 41135, a nearby M5 dwarf that was already known to have a wider, slightly more massive common proper motion companion, NLTT 41136, at 2.4" separation. Analysis of combined-light and RV curves of the system indicates that NLTT 41135B is a (31-34)+/-3M_Jup_ brown dwarf (where the range depends on the unknown metallicity of the host star) on a circular orbit. The visual M dwarf pair appears to be physically bound, so the system forms a hierarchical triple, with masses approximately in the ratio 8:6:1. The eclipses are grazing, preventing an unambiguous measurement of the secondary radius, but follow-up observations of the secondary eclipse (e.g., with the James Webb Space Telescope) could permit measurements of the surface brightness ratio between the two objects, and thus place constraints on models of brown dwarfs.2010ApJ...718.1353Ihttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/718/1353CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/wds : The Washington Visual Double Star Catalog (Mason+ 2001-2012)I/298 : LSPM-North Catalog (Lepine+ 2005)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/718/1353https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/718/1353http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/718/1353https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/718/1353https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/718/1353http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/718/1353GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/ApJ/718/1353/table2FLWO 1.2m z-band light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Date of mid-exposure in UTC time-systemdtime.epochdoublezmagDifferential z-band magnitudemagphot.mag;em.opt.Ifloate_zmagError in zmag (1)magstat.error;phot.mag;em.opt.IfloatDmagFrame zero point offset (2)magphot.mag;arith.difffloatFWHMFWHM of stellar images (3)pixphys.angSizefloatAirmassAirmassobs.airMassfloatxX pixel coordinate of star (4)pixpos.cartesian.xdoubleyY pixel coordinate of star (4)pixpos.cartesian.ydoubleJ/ApJ/718/1353/table1UH 2.2m resolved z-band light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Date of mid-exposure in UTC time-systemdtime.epochdoublezmagDifferential z-band magnitudemagphot.mag;em.opt.Ifloate_zmagError in zmag (1)magstat.error;phot.mag;em.opt.IfloatDmagFrame zero point offset (2)magphot.mag;arith.difffloatFWHMFWHM of stellar images (3)pixphys.angSizefloatAirmassAirmassobs.airMassfloatxX pixel coordinate of star (4)pixpos.cartesian.xdoubleyY pixel coordinate of star (4)pixpos.cartesian.ydouble