J/MNRAS/418/1231ivo://CDS.VizieR/J/MNRAS/418/1231doi:10.26093/cds/vizier.74181231CDSDawson P.Scholz A.Ray T.P.2024-07-15T20:17:10Z2012-08-23T07:41:05ZCDS support team

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

cds-question@unistra.fropen-star-clusterslate-type-starsinfrared-sourcesinfrared-photometryThis paper presents the results of a search for brown dwarfs in the Upper Scorpius Association using data from the UKIRT Infrared Deep Sky Survey (UKIDSS) Galactic Cluster Survey. Candidate young brown dwarfs were first chosen by their position in colour magnitude diagrams with further selection based on proper motions to ensure Upper Scorpius membership. Proper motions were derived by comparing UKIDSS and Two Micron All Sky Survey (2MASS) data. Using that method we identify 19 new brown dwarfs in the southern part of the association. In addition there are up to eight likely members with slightly higher dispersion velocity. The ratio of brown dwarfs to stars was found to be consistent with other areas in Upper Scorpius. It was also found to be similar to other results from young clusters with OB associations, and lower than those without, suggesting the brown dwarf formation rate may be a function of environment.2011MNRAS.418.1231Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/418/1231CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)II/314 : UKIDSS-DR8 LAS, GCS and DXS Surveys (Lawrence+ 2012)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/418/1231https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/418/1231http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/418/1231https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/418/1231https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/418/1231http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/418/1231GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/418/1231/BD (Data for the brown dwarfs of Fig.3 and 4 plus the object too faint to be recorded in 2MASS)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/418/1231/BD?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/418/1231/BD?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/418/1231/BD?GETtext/xml+votable180.050000true239.627625-28.04341670.0055555555555555565/10731 6/42909-42911 42923 42928-42929 42931 42936-42938 44289 44292 442948.305533028865447e-20 2.3717893470513554e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/418/1231?format=asciiInfrareddefaultJ/MNRAS/418/1231/BDData for the brown dwarfs of Fig.3 and 4 plus the object too faint to be recorded in 2MASSrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTSimbad column added by the CDSmeta.id;meta.datasetcharNameName (2MASS JHHMMSSss+DDMMSSs or UGCS JHHMMSS.ss+DDMMSS.s) (1)meta.id;meta.maincharn_Name[*] Note (2)meta.notecharRAJ2000UKIDSS Right ascension (J2000, epoch=~2007.3)pos.eq.ra;meta.mainDEJ2000UKIDSS Declination (J2000, epoch=~2007.3)pos.eq.dec;meta.mainZmagUKIDSS Z magnitudemagphot.mag;em.opt.IfloatYmagUKIDSS Y magnitudemagphot.mag;em.IR.JfloatJmagUKIDSS J magnitudemagphot.mag;em.IR.JfloatHmagUKIDSS H magnitudemagphot.mag;em.IR.HfloatKmagUKIDSS K magnitudemagphot.mag;em.IR.KfloatpmRA? Proper motion along RA (*cos(DE))mas/yrpos.pm;pos.eq.rafloatnullablepmDE? Proper motion along DEmas/yrpos.pm;pos.eq.decfloatnullable2MDisplay the 2MASS data (Cutri et al. 2003, Cat. II/246)meta.ref.urlcharUG8Details from the UKIDSS-DR8 GCS data (Lawrence et al. 2012, Cat. II/314)meta.ref.urlcharSimbadSimbad column added by the CDSmeta.refchar