J/ApJS/190/100ivo://CDS.VizieR/J/ApJS/190/100doi:10.26093/cds/vizier.21900100CDSKirkpatrick J.D.Looper D.L.Burgasser A.J.Schurr S.D.Cutri R.M.,Cushing M.C.Cruz K.L.Sweet A.C.Knapp G.R.Barman T.S.,Bochanski J.J.Roellig T.L.McLean I.S.McGovern M.R.Rice E.L.2017-07-11T13:08:42Z2010-10-14T08:45:20ZCDS support team

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

cds-question@unistra.frinfrared-photometryproper-motionssubdwarf-starsstellar-spectral-typesWe have conducted a 4030deg^2^ near-infrared proper motion survey using multi-epoch data from the Two Micron All-Sky Survey (2MASS). We find 2778 proper motion candidates, 647 of which are not listed in SIMBAD. After comparison to Digitized Sky Survey images, we find that 107 of our proper motion candidates lack counterparts at B, R, and I bands and are thus 2MASS-only detections. We present results of spectroscopic follow-up of 188 targets that include the infrared-only sources along with selected optical-counterpart sources with faint reduced proper motions or interesting colors. We also establish a set of near-infrared spectroscopic standards with which to anchor near-infrared classifications for our objects. Among the discoveries are six young field brown dwarfs, five "red L" dwarfs, three L-type subdwarfs, twelve M-type subdwarfs, eight "blue L" dwarfs, and several T dwarfs. We further refine the definitions of these exotic classes to aid future identification of similar objects. We examine their kinematics and find that both the "blue L" and "red L" dwarfs appear to be drawn from a relatively old population.2010ApJS..190..100Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/190/100CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)I/284 : The USNO-B1.0 Catalog (Monet+ 2003)J/A+A/497/619 : New ultra-cool dwarfs from SDSS and 2MASS (Zhang+, 2009)J/MNRAS/394/857 : UKIDSS-2MASS proper motion survey (Deacon+, 2009)J/AJ/136/1290 : Ultracool dwarfs from the 2MASS (Reid+, 2008)J/AJ/131/2722 : New L and T dwarfs from the SDSS (Chiu+, 2006)J/other/ARA+A/43.195 : L and T dwarf stars (Kirkpatrick, 2005)J/AJ/127/3553 : JHK photometry and spectroscopy for L and T dwarfs (Knapp+,J/AJ/126/2421 : 2MASS-Selected sample of ultracool dwarfs (Cruz+, 2003)J/AJ/123/3409 : SDSS M, L, and T dwarfs (Hawley+, 2002)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/190/100https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/190/100http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/190/100https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/190/100https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/190/100http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/190/100GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/190/100/table1 (List of 2MASS proper motion candidates)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/190/100/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/190/100/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/190/100/table1?GETtext/xml+votable180.050000true0.539-77.25180560.005555555555555556Cone search capability for table J/ApJS/190/100/table3 (Supporting observations of M and L dwarfs and subdwarfs)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/190/100/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/190/100/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/190/100/table3?GETtext/xml+votable180.050000true2.9253333-20.95358330.005555555555555556Cone search capability for table J/ApJS/190/100/table4 (New M and L dwarfs spectral standards in the near-infrared)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/190/100/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/190/100/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/190/100/table4?GETtext/xml+votable180.050000true109.8802532.83005560.0055555555555555565/2701 2712 6183 8235 8236 8259 8281 8330 8354 8355 8356 9354 11988 6/28 30 45 46 49 75 96 181 182 234 243 252 259 260 262 283 321 323 326 329 346 397 398 420 423 434 440 441 461 463 469 470 472 474 487 496 497 499 508 517 521 527 544 589 602 625 637 639 652 674 696 771 778 779 812 815 833 836 852 859 862 870 876 881 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45075 45102 45124 45140 45142 45148 45321 45345 45362 45372 45382 45383 45384 45388 45420 45506 45508 45526 45559 45566 45809 45822 45898 45902 45920 45930 45964 45967 45976 45977 46117 46244 46250 46313 46321 46324 46373 46376 46377 46384 46386 46433 46660 46661 46671 46672 46674 46675 46676 46678 46722 46933 46954 47015 47033 47043 47067 47213 47221 47224 47229 47286 47287 47313 47315 47321 47339 47357 47445 47452 47453 47458 47512 47519 47555 47590 47599 47641 47713 47866 47881 47887 47895 47898 47906 47907 47914 47945 47946 47950 47972 47973 47986 47993 48071 48088 48161 48287 48344 48352 48353 48361 48364 48407 48495 48577 48584 48593 48598 48612 48707 48716 48728 48971 48974 48990 48995 48997 49007 49010 49018 49025 491068.650015785639275e-20 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/190/100?format=asciiOpticalInfrareddefaultJ/ApJS/190/100/table1List of 2MASS proper motion candidatesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASS2MASS Designation (1)meta.id;meta.maincharprimaryn_2MASSSimbad column added by the CDSmeta.ref.urlcharL[1-3] List from which candidate was drawn (2)meta.codeintB[IJ] Shortest wavelength band at which object is seen (3)instr.bandpasscharS[*] Indicates spectroscopic follow-upmeta.codechar2Mpm? 2MASS measured proper motionarcsec/yrpos.pmfloatnullablee_2Mpm? Uncertainty in 2Mpmarcsec/yrpos.pmfloatnullable2MPA? 2MASS measured proper motion position angledegpos.pm;pos.posAngintnullableMSig? Motion significancestat.fit.goodnessfloatnullableJmag2MASS J band magnitudemagphot.mag;em.IR.Jfloate_Jmag? Uncertainty in Jmagmagstat.error;phot.mag;em.IR.JfloatnullableHmag2MASS H band magnitudemagphot.mag;em.IR.Hfloate_Hmag? Uncertainty in Hmagmagstat.error;phot.mag;em.IR.HfloatnullableKsmag? 2MASS Ks band magnitudemagphot.mag;em.IR.Kfloatnullablee_Ksmag? Uncertainty in Kmagmagstat.error;phot.mag;em.IR.KfloatnullableHJmag? Reduced proper motion at J-band defined as HJmag=Jmag+5*log(2Mpm)+5.magphys.magAbsfloatnullableUSpm? USNO-B measured proper motionarcsec/yrpos.pmfloatnullablee_USpm? Uncertainty in USpmarcsec/yrpos.pmfloatnullableUSPA? USNO-B proper motion position angledegpos.pm;pos.posAngintnullableB1mag? USNO-B B1 magnitudemagphot.mag;em.opt.BfloatnullableB2mag? USNO-B B2 magnitudemagphot.mag;em.opt.BfloatnullableR1mag? USNO-B R1 magnitudemagphot.mag;em.opt.RfloatnullableR2mag? USNO-B R2 magnitudemagphot.mag;em.opt.RfloatnullableImag? USNO-B I magnitudemagphot.mag;em.opt.Ifloatnullablepm? SIMBAD measured proper motionarcsec/yrpos.pmfloatnullablee_pm? Uncertainty in Spmarcsec/yrpos.pmfloatnullablepmPA? position angle of Simbad proper motiondegpos.posAng;pos.pmintnullableSNameSIMBAD namemeta.idcharSpT? SIMBAD spectral typesrc.spTypechar2MDisplay the 2MASS data (Cutri et al. 2003, Cat. II/246)meta.ref.urlcharUSNODisplay the USNO-B1.0 data (Monet et al. 2003, Cat. I/284)meta.ref.urlcharSimbadNameSimbad column added by the CDSmeta.idchar_RAPosition derived from 2MASS name (right ascension part)degpos.eq.ra;meta.main_DEPosition derived from 2MASS name (declination part)degpos.eq.dec;meta.mainJ/ApJS/190/100/table2Spectroscopic follow-up of discoveriesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASS2MASS identification (JHHMMSSss+DDMMSSs)meta.id;meta.maincharm_2MASS[AB] Component lettermeta.code.multipcharn_2MASS[bdgfh] Individual notes (1)meta.notecharTelTelescopemeta.id;instr.telcharInstInstrumentmeta.id;instrcharObsDateDate(s) of observation (UT)time.epochnullableObs2Second datetime.epochcharWeathWeather conditionsmeta.notecharInt? Integration timestime.expointnullableu_Int[?] Uncertainty flag for Intmeta.code.errorcharSpT.Opt? Optical spectral typesrc.spTypecharSpT.NIR? NIR spectral typesrc.spTypecharn_SpT.NIR[ace] Notes on NIR spectrum (2)meta.notecharJ/ApJS/190/100/table3Supporting observations of M and L dwarfs and subdwarfsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASS2MASS identification (JHHMMSSss+DDMMSSs)meta.id;meta.maincharONameOther namemeta.idcharTelTelescopemeta.id;instr.telcharInstInstrumentmeta.id;instrcharObsDateDate of observation (UT)time.epochnullableWeath? Weather conditionsmeta.notecharIntIntegration timestime.expointSpT.Opt? Optical spectral typesrc.spTypecharSpT.new? New optical spectral type (1)src.spTypecharn_SpT.new[b] Note (2)meta.notecharSpT? Adopted spectral typesrc.spTypecharn_SpT[c-f] Note on the adopted spectral type (3)meta.notechar_RAPosition derived from 2MASS name (right ascension part)degpos.eq.ra;meta.main_DEPosition derived from 2MASS name (declination part)degpos.eq.dec;meta.mainJ/ApJS/190/100/table4New M and L dwarfs spectral standards in the near-infraredrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASS2MASS identification (JHHMMSSss+DDMMSSs)meta.id;meta.maincharONameOther namemeta.idcharSpTIR? Adopted NIR spectral typesrc.spTypecharJmag2MASS J-band magnitudemagphot.mag;em.IR.Jfloate_JmagJmag uncertaintymagstat.error;phot.mag;em.IR.JfloatJ-H2MASS J-H color indexmagphot.color;em.IR.J;em.IR.Hfloate_J-HJ-H uncertaintymagstat.error;phot.color;em.IR.JfloatJ-Ks2MASS J-Ks color indexmagphot.color;em.IR.J;em.IR.Kfloate_J-KsJ-Ks uncertaintymagstat.error;phot.color;em.IR.JfloatSpT.O? Published optical spectral typesrc.spTypecharr_SpT.O? Optical reference (1)meta.ref;pos.frameintnullable_RAPosition derived from 2MASS name (right ascension part)degpos.eq.ra;meta.main_DEPosition derived from 2MASS name (declination part)degpos.eq.dec;meta.mainJ/ApJS/190/100/newCombined table from original tablesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASS2MASS identification (JHHMMSSss+DDMMSSs)meta.id;meta.maincharObjSimbad column added by the CDSmeta.code.classcharf_2MASS[ab] Flag on 2MASS (1)meta.codecharSpT.Opt? Optical spectral type (2)src.spTypecharSpT.NIR? NIR spectral typesrc.spTypecharJ-H2MASS J-H color indexmagphot.color;em.IR.J;em.IR.Hfloate_J-HJ-H uncertaintymagstat.error;phot.color;em.IR.JfloatH-Ks2MASS H-Ks color indexmagphot.color;em.IR.H;em.IR.Kfloate_H-KsH-Ks uncertaintymagstat.error;phot.color;em.IR.HfloatJ-Ks2MASS J-Ks color indexmagphot.color;em.IR.J;em.IR.Kfloate_J-KsJ-Ks uncertaintymagstat.error;phot.color;em.IR.JfloatJ/ApJS/190/100/table10Known blue L dwarfsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameDesignation (SDSS JHHMMSS.ss+DDMMSS.s or 2MASS JHHMMSSss+DDMMSSs)meta.id;phys.atmol.configurationcharf_Name[abc] Flag on name (1)meta.codecharr_NameDiscovery reference (2)meta.ref;pos.frameintMpmProper motionarcsec/yrpos.pmfloate_MpmMpm uncertaintyarcsec/yrpos.pmfloatDistDistance (3)pcpos.distance;pos.heliocentricfloatu_Dist[:] Uncertainty flag for Distmeta.code.errorchare_Dist? Distance uncertaintypcstat.errorfloatnullableVtanTangential velocitykm/sphys.veloc.transverseintu_Vtan[:] Uncertainty flag for Vtanmeta.code.errorchare_Vtan? Vtan uncertaintykm/sstat.errorintnullabler_VtanKinematic reference (2)meta.ref;pos.frameintSpT.Opt? Optical spectral typesrc.spTypecharSpT.NIR? NIR spectral typesrc.spTypechare_SpT.NIR? SpTypeIR uncertaintystat.errorfloatnullabler_SpT.NIRSpectral type reference(s) (2)meta.ref;pos.framecharJ-Ks? 2MASS J-Ks color indexmagphot.color;em.IR.J;em.IR.Kfloatnullablee_J-Ks? J-Ks uncertaintymagstat.error;phot.color;em.IR.JfloatnullableJ/ApJS/190/100/table13Measured velocities and distance estimatesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintOTypeType of object (1)src.classchar2MASS2MASS designation (JHHMMSSss+DDMMSSs)meta.id;meta.maincharSourceOptical or NIR (2)meta.codecharSpType? Spectral typesrc.spTypecharObsDateObservation date (UT)time.epoch;obsnullableVradRadial velocitykm/sphys.veloc;pos.heliocentricinte_Vrad[50] Vrad uncertaintykm/sstat.errorintDistEstimated distance (3)pcpos.distance;pos.heliocentricintVtanTangential velocitykm/sphys.veloc.transverseinte_VtanVtan uncertaintykm/sstat.errorintVelTotal space motionkm/sphys.velocinte_VelVel uncertaintykm/sstat.errorint