J/ApJS/257/45ivo://CDS.VizieR/J/ApJS/257/45doi:10.26093/cds/vizier.22570045CDSHsu C.-C.Burgasser A.J.Theissen C.A.Gelino C.R.Birky J.L.,Diamant S.J.M.Bardalez Gagliuffi D.C.Aganze C.Blake C.H.Faherty J.K.2025-05-15T20:13:16Z2022-03-29T10:21:39ZCDS support team

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

cds-question@unistra.frbrown-dwarfsradial-velocityinfrared-astronomyspectroscopyt-dwarfsWe report multiepoch radial velocities, rotational velocities, and atmospheric parameters for 37 T-type brown dwarfs observed with Keck/NIRSPEC. Using a Markov Chain Monte Carlo forward-modeling method, we achieve median precisions of 0.5 and 0.9km/s for radial and rotational velocities, respectively. All of the T dwarfs in our sample are thin-disk brown dwarfs. We confirm previously reported moving group associations for four T dwarfs. However, the lack of spectral indicators of youth in two of these sources suggests that these are chance alignments. We confirm two previously unresolved binary candidates, the T0+T4.5 2MASS J11061197+2754225 and the L7+T3.5 2MASSJ21265916+7617440, with orbital periods of 4 and 12yr, respectively. We find a kinematic age of 3.5+/-0.3Gyr for local T dwarfs, consistent with nearby late M dwarfs (4.1+/-0.3Gyr). Removal of thick-disk L dwarfs in the local ultracool dwarf sample gives a similar age for L dwarfs (4.2+/-0.3Gyr), largely resolving the local L dwarf age anomaly. The kinematic ages of local late M, L, and T dwarfs can be accurately reproduced with population simulations incorporating standard assumptions of the mass function, star formation rate, and brown dwarf evolutionary models. A kinematic dispersion break is found at the L4-L6 subtypes, likely reflecting the terminus of the stellar main sequence. We provide a compilation of precise radial velocities for 172 late M, L, and T dwarfs within ~20pc of the Sun.2021ApJS..257...45Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/257/45CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/284 : The USNO-B1.0 Catalog (Monet+ 2003)II/311 : WISE All-Sky Data Release (Cutri+ 2012)II/319 : UKIDSS-DR9 LAS, GCS and DXS Surveys (Lawrence+ 2012)I/345 : Gaia DR2 (Gaia Collaboration, 2018)J/A+A/363/1081 : Non-linear limb-darkening law for LTE models (Claret 2000)J/ApJ/564/421 : Spectra of T dwarfs. I. (Burgasser+, 2002)J/AJ/123/3409 : SDSS M, L, and T dwarfs (Hawley+, 2002)J/A+A/410/527 : Abundances in the Galactic disk (Bensby+, 2003)J/AJ/126/2421 : 2MASS-Selected sample of ultracool dwarfs (Cruz+, 2003)J/AJ/126/3007 : Spectroscopy of faint red NLTT dwarfs (Reid+, 2003)J/AJ/127/2856 : Brown dwarfs in the 2MASS Survey (Burgasser+, 2004)J/AJ/127/3553 : JHK phot. and spectroscopy for L and T dwarfs (Knapp+, 2004)J/other/ARA+A/42.685 : Young stars near the Sun (Zuckerman+, 2004)J/other/ARA+A/43.195 : L and T dwarf stars (Kirkpatrick, 2005)J/A+A/440/1061 : Southern red high proper motion objects (Lodieu+, 2005)J/PASP/117/676 : LHS faint proper-motion stars (Reid+, 2005)J/AJ/131/2722 : New L and T dwarfs from the SDSS (Chiu+, 2006)J/AJ/132/891 : Binaries among nearby L dwarfs (Reid+, 2006)J/AJ/134/1162 : 11 new T dwarfs in 2MASS (Looper+, 2007)J/AJ/133/2258 : Kinematics of ultracool dwarfs (Schmidt+, 2007)J/MNRAS/384/1399 : Proper motions of field L and T dwarfs (Jameson+, 2008)J/ApJ/676/1281 : L and T dwarfs in 2MASS/SDSS (Metchev+, 2008)J/MNRAS/383/831 : New DENIS nearby L and late-M dwarfs (Phan-Bao+, 2008)J/AJ/136/1290 : Ultracool dwarfs from the 2MASS (Reid+, 2008)J/A+A/501/1059 : Infrared spectra of 9 T dwarfs (del Burgo+, 2009)J/AJ/137/1 : PMs and astrometry of late-type dwarfs (Faherty+, 2009)J/ApJ/705/1416 : Volume-limited sample of M7-M9.5 dwarfs (Reiners+, 2009)J/ApJ/723/684 : NIRSPEC ultracool dwarf RVel survey (Blake+, 2010)J/ApJ/710/1142 : SpeX spectrosc. of low mass binaries. I. (Burgasser+, 2010)J/ApJS/190/100 : NIR proper motion survey using 2MASS (Kirkpatrick+, 2010)J/ApJ/710/1627 : Mid-IR photometry of cold brown dwarfs (Leggett+, 2010)J/MNRAS/407/2269 : Polarisation of a sample of late M dwarfs (Morin+, 2010)J/AJ/139/1808 : Colors and kinematics of SDSS L dwarfs (Schmidt+, 2010)J/A+A/512/A37 : Velocities of 43 nearby L dwarfs (Seifahrt+, 2010)J/AJ/142/77 : New T dwarfs identified in Pan-STARRS 1 (Deacon+, 2011)J/ApJS/197/19 : First brown dwarfs discovered by WISE (Kirkpatrick+, 2011)J/AJ/141/97 : SDSS DR7 M dwarfs (West+, 2011)J/AJ/144/99 : Near-IR spectroscopy of 36 late M dwarfs (Deshpande+, 2012)J/ApJS/201/19 : Hawaii Infrared Parallax Program. I. (Dupuy+, 2012)J/ApJ/752/56 : BDKP. III. Plxs for 70 ultracool dwarfs (Faherty+, 2012)J/ApJ/758/56 : Young M dwarfs within 25pc. II. Kinematics (Shkolnik+, 2012)J/AJ/146/156 : APOGEE M-dwarf survey. I. 1st-yr vel. (Deshpande+, 2013)J/MNRAS/428/2824 : Rapid optical variability in ultracool dwarfs (Koen, 2013)J/ApJS/205/6 : T dwarf population revealed by WISE (Mace+, 2013)J/MNRAS/432/1203 : Rotation periods of M-dwarf stars (McQuillan+, 2013)J/PASP/125/809 : New nearby M, L, and T dwarfs (Thompson+, 2013)J/ApJ/794/143 : New SpeX Observations of M7-L6 Dwarfs (Bardalez+, 2014)J/A+A/566/A130 : Rot. & variability of substellar objects (Crossfield, 2014)J/AJ/147/94 : Solar neighborhood. XXXII. L and M dwarfs (Dieterich+, 2014)J/ApJ/784/156 : Plxs for 1507 nearby mid-to-late M dwarfs (Dittmann+, 2014)J/A+A/568/A9 : 300-2500nm flux calibration ref. spectra (Moehler+, 2014)J/AJ/147/20 : Spectroscopy of 447 nearby M dwarfs (Newton+, 2014)J/ApJ/783/130 : Parallaxes of high mass star forming regions (Reid+, 2014)J/AJ/147/34 : SpeX library of L-type dwarfs (Schneider+, 2014)J/A+A/566/A111 : Brown dwarf atmosphere monitoring (BAM) (Wilson+, 2014)J/MNRAS/454/593 : Young moving groups in solar neighbourhood (Bell+, 2015)J/ApJS/220/18 : BDKP IV. RVs of M & L dwarfs with MagE (Burgasser+, 2015)J/ApJ/810/158 : M,L,T dwarfs fundamental param. and SEDs (Filippazzo+, 2015)J/ApJS/219/33 : BANYAN. VII. Candidate YMG members from BASS (Gagne+, 2015)J/other/Sci/350.64 : 51 Eri b near-infrared spectrum (Macintosh+, 2015)J/ApJS/220/16 : SpeX NIR survey of 886 nearby M dwarfs (Terrien+, 2015)J/ApJ/812/3 : MEarth mid-to-late M dwarfs rot. & kinematics (West+, 2015)J/ApJS/225/10 : Kinematic analysis of M7-L8 dwarfs (Faherty+, 2016)J/ApJS/224/36 : The AllWISE motion survey (AllWISE2) (Kirkpatrick+, 2016)J/ApJ/817/112 : NEOWISE/AllWISE high PM objects (Schneider+, 2016)J/AJ/152/24 : Trigonometric plxs of 134 low-mass stars (Weinberger+, 2016)J/AJ/154/147 : Astrometry for late-type dwarfs & subdwarfs (Dahn+, 2017)J/ApJS/231/15 : Astrometry of ultracool dwarf binaries (Dupuy+, 2017)J/MNRAS/465/4723 : Log of SALT-RSS observations (Koen+, 2017)J/ApJ/838/73 : BD surface gravities with Keck/NIRSPEC (Martin , 2017)J/A+A/603/A57 : 51 Eri b SPHERE/IFS sp. & atmosphere models (Samland+, 2017)J/ApJS/234/1 : M, L, & T dwarfs from PS1 3{pi} Survey (Best+, 2018)J/ApJ/856/23 : BANYAN. XI. The BANYAN {Sigma} algorithm (Gagne+, 2018)J/AJ/156/217 : Stellar data for M dwarfs in MEarth-South (Newton+, 2018)J/A+A/619/L8 : Ultra-cool dwarfs candidates in Gaia DR2 (Reyle, 2018)J/ApJ/858/L7 : Red clump stars selected from LAMOST & APOGEE (Ting+, 2018)J/AJ/157/231 : MLSDSS-GaiaDR2 sample of M and L dwarfs (Kiman+, 2019)J/ApJS/240/19 : Parallaxes of late-T and Y dwarfs (Kirkpatrick+, 2019)J/AJ/157/101 : Cloud Atlas: HST/WFC3 NIR sp. library (Manjavacas+, 2019)J/ApJ/878/21 : Vertical motions of APOGEE & Gaia RC stars (Ting+, 2019)J/AJ/159/257 : Hawaii IR plx prog. IV. L0-T8 BDs with UKIRT (Best+, 2020)J/ApJ/899/123 : Spitzer follow up of 95 brown dwarfs (Meisner+, 2020)J/AJ/160/63 : IR sp. of 5 BDs with Gemini North IRS (Miles+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/257/45https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/257/45http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/257/45https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/257/45https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/257/45http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/257/45GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/257/45/dwarfT (NIRSPEC T dwarf radial velocities and heliocentric space motions (Tables 1 and 5))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/257/45/dwarfT?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/257/45/dwarfT?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/257/45/dwarfT?GETtext/xml+votable180.050000true0.056416725.9050.005555555555555556Cone search capability for table J/ApJS/257/45/dwarf20pc (Late-M and L dwarf at the local 20pc with radial velocities and heliocentric space motions (Tables 7 and 8))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/257/45/dwarf20pc?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/257/45/dwarf20pc?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/257/45/dwarf20pc?GETtext/xml+votable180.050000true1.14525-40.73511110.0055555555555555566/221 250 399 2101 2202 2330 2354 2441 2502 2978 3764 4262 4719 4768 4775 4790 4948 5200 5429 6328 6382 6783 7440 7533 7592 8402 8440 8478 8794 8972 8995 9009 9039 9146 9173 9449 9479 10332 10676 11292 11336 11596 11639 11719 11834 11856 12045 12427 12592 13336 13425 13885 14127 14351 14858 14910 14926 15085 16085 16226 16502 16546 16568 16631 17166 17530 17985 18032 18060 18156 18281 18683 18726 19144 19615 19763 19857 19895 20141 20273 20436 20754 21209 21296 21319 21660 21809 22535 22681 22687 22739 22759 22861 22937 23010 23144 23471 24040 24566 24590 24694 24824 24897 25156 25310 25314 25411 25818 25853 26020 26210 26248 26282 26300 27019 27058 27383 27469 27635 28006 29301 29657 30505 30749 30833 30883 31009 31011 31062 31268 31296 31319 31502 31534 31871 32426 32650 33655 33767 34289 34535 34622 35020 35327 35451 35499 35864 35923 36072 36602 38176 38322 38786 39485 39807 40332 40669 40738 40882 40941 43475 43957 43966 44226 44251 44286 44518 44807 45023 45752 48957 491391.5062136169708525e-19 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/257/45?format=asciiInfrareddefaultJ/ApJS/257/45/dwarfTNIRSPEC T dwarf radial velocities and heliocentric space motions (Tables 1 and 5)PopPopulation (G1)meta.codecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNobsNumber of NIRSPEC observations for this star (link to Table 2)meta.numberintnullableIDIdentifier of the star (JHHMM+DDMM)meta.id;meta.maincharprimaryRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainSpTlSpectral typesrc.spTypecharf_SpTlFlag on SpTl (1)meta.codecharJmag[13.46/16.11] 2MASS J-band magnitudemagphot.mag;em.IR.Jfloate_Jmag[0.004/0.5] Uncertainty on the Jmagmagstat.error;phot.magfloatJ-K[-0.94/1.63] J-K color indexmagphot.color;em.IR.J;em.IR.KfloatpmDE[-1726/1042] Proper motion in declinationmas/yrpos.pm;pos.eq.decinte_pmDE[0/5] pmDE uncertaintymas/yrstat.error;pos.pm;pos.eq.decinte_Dist[0.01/2.4] Dist uncertaintypcstat.errorfloatRVl[-40.5/49.6]? Radial velocitykm/sphys.veloc;pos.heliocentricfloatnullablee_RVl[0.4/3]? RVl uncertaintykm/sstat.errorfloatnullablel_vsiniLimit flag on vsinimeta.code.error;phys.veloc.rotatcharvsini[11.5/60]? Rotational velocitykm/sphys.veloc.rotatfloatnullablee_vsini[0.8/10]? vsini uncertaintykm/sstat.error;phys.veloc.rotatfloatnullableRefDiscovery/classification references (see refs.dat file)meta.refcharNfNumber of fit parameters for this star (link to Table 4)meta.numberintnullableSpTSpectral typesrc.spTypecharn_SpTb=Known or candidate binarymeta.notecharRV[-43.4/56.2] Adopted radial velocitykm/sphys.veloc;pos.heliocentricfloate_RV[0.1/2.1] Lower uncertainty on RVkm/sstat.errorfloatE_RV[0.1/2.7] Upper uncertainty on RVkm/sstat.error;stat.maxfloatUVel[-94.6/63.4] U space velocitykm/sphys.veloc;pos.cartesian.xfloate_UVel[0.1/5] UVel uncertaintykm/sstat.errorfloatVVel[-83.8/28.7] V space velocitykm/sphys.veloc;pos.cartesian.yfloate_VVel[0.1/9.7] VVel uncertaintykm/sstat.errorfloatWVel[-36.3/28] W space velocitykm/sphys.veloc;pos.cartesian.zfloate_WVel[0.1/4.1] WVel uncertaintykm/sstat.errorfloatProb[0.01/0.27] TD to D probability ratiostat.probabilityfloate_J-K[0.03/0.5] J-K uncertaintymagstat.error;phot.color;em.IR.JfloatpmRA[-1194/2214] Proper motion in right ascensionmas/yrpos.pm;pos.eq.rainte_pmRA[0/65] pmRA uncertaintymas/yrstat.error;pos.pm;pos.eq.raintDist[5.16/26.7] Distancepcpos.distance;pos.heliocentricfloatf_IDFlag on ID (1)meta.codecharSimbadNameSimbad column added by the CDSmeta.idcharnullableJ/ApJS/257/45/table2NIRSPEC T dwarf observing logIDIdentifier of the star (JHHMM+DDMM) (1)meta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintf_IDd=Observed with the upgraded NIRSPECmeta.codecharPIDObservation program identifiermeta.id;obscharObsUT date of the observationstime.epoch;obsnullableExpIntegration time (3)stime.epochcharAirMass[1/2.38] Air mass (2)obs.airMassfloatFiltFilter (4)meta.id;instr.filtercharSlitSlitarcsecinstr.setupcharEchA[62.61/63.03] Echelle angle (2)degpos.posAngfloatCDA[34.06/36.9] Cross-disperser angle (2)deginstr.offsetfloatCorr[-29.26/30.294] Barycentric correctionkm/sphys.veloc;arith.difffloatJ/ApJS/257/45/table4Spectral model fit parametersE_vsini[0.5/10.3]? Upper uncertainty in vsinikm/sstat.error;stat.maxfloatnullablee_vsini[0.4/9]? Lower uncertainty in vsinikm/sstat.error;phys.veloc.rotatfloatnullableRV-m[-43.4/56.2]? Weighted average of RV over all epochskm/sspect.dopplerVeloc;stat.meanfloatnullableE_RV-m[0.1/2.7]? Upper uncertainty in RV-mkm/sstat.error;stat.maxfloatnullablee_RV-m[0.1/2.1]? Lower uncertainty in RV-mkm/sstat.errorfloatnullableRV-l[-40.5/49.6]? Literature RVkm/sphys.veloc;pos.heliocentricfloatnullablee_RV-l[0.4/3.0]? Uncertainty in RV-lkm/sstat.errorfloatnullablevsini-m[9/89.6]? Weighted average of vsini over all epochskm/sphys.veloc.rotat;stat.meanfloatnullableE_vsini-m[0.3/10]? Upper uncertainty in vsini-mkm/sstat.error;stat.maxfloatnullablee_vsini-m[0.2/9]? Lower uncertainty in vsini-mkm/sstat.errorfloatnullablevsini-l[11.5/60]? Literature vsinikm/sphys.veloc.rotatfloatnullablee_vsini-l[0.8/10]? Uncertainty in vsini-lkm/sstat.errorfloatnullableTeff[744/1700]? Individual measured effective temperatureKphys.temperature.effectiveintnullableE_Teff[1/104]? Upper uncertainty in TeffKstat.error;stat.maxintnullablee_Teff[2/156]? Lower uncertainty in TeffKstat.error;phys.temperature.effectiveintnullableSpTSpectral Typesrc.spTypecharTeff-m[744/1698]? Weighted average of Teff over all epochsKphys.temperature.effective;stat.meanintnullableE_Teff-m[1/97]? Upper uncertainty in Teff-mKstat.error;stat.maxintnullablee_Teff-m[1/46]? Lower uncertainty in Teff-mKstat.errorintnullablelogg[4.2/5.5]? Individual measured surface gravitylog(cm.s**-2)phys.gravityfloatnullableE_logg[0/0.7]? Upper uncertainty in logglog(cm.s**-2)stat.error;stat.maxfloatnullablee_logg[0/0.7]? Lower uncertainty in logglog(cm.s**-2)stat.errorfloatnullablelogg-m[4.5/5.5]? Weighted average of logg over all epochslog(cm.s**-2)phys.gravity;stat.meanfloatnullableE_logg-m[0.001/0.5]? Upper uncertainty in logg-mlog(cm.s**-2)stat.error;stat.maxfloatnullablee_logg-m[0.001/0.4]? Lower uncertainty in logg-mlog(cm.s**-2)stat.errorfloatnullableModel[BS] Models used (3)meta.id;stat.fitcharRefReferences (4)meta.refcharFlag[hi] Flag on adopted Teff/logg (2)meta.code.errorcharf_Date[g] Flag on observation date (2)meta.codecharf_Order[fj] flag on Order (2)meta.codecharl_vsini-mLimit flag on vsini-mmeta.code.errorcharf_vsini-m[k] flag on vsini-m (2)meta.codecharl_vsini-l[<] Limit flag on vsini-lmeta.code.errorcharIDIdentifier of the star (JHHMM+DDMM) (1)meta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateUT date of observationtime.epoch;obsnullableOrder[33/58] Spectral order of datastat.variance;instr.orderintSN[1/78]? Signal to noise ratiostat.snrintnullableRV[-43.4/56.2]? Individual radial velocity at Obskm/sphys.veloc;pos.heliocentricfloatnullableE_RV[0.2/5.3]? Upper uncertainty in RVkm/sstat.error;stat.maxfloatnullablee_RV[0.2/4.1]? Lower uncertainty in RVkm/sstat.errorfloatnullablevsini[4.4/89.6]? Individual vsin(i) at Obskm/sphys.veloc.rotatfloatnullableJ/ApJS/257/45/dwarf20pcLate-M and L dwarf at the local 20pc with radial velocities and heliocentric space motions (Tables 7 and 8)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainSpTlSpectral Typesrc.spTypeJmag[8.39/16.48]? 2MASS J-band magnitudemagphot.mag;em.IR.Jfloatnullablee_Jmag[0/0.5]? Uncertainty in Jmagmagstat.error;phot.magfloatnullableJ-Ks[0.8/2.55]? 2MASS J-Ks colormagphot.color;em.IR.J;em.IR.Kfloatnullablee_J-Ks[0.01/0.71]? Uncertainty in J-Ksmagstat.error;phot.color;em.IR.JfloatnullablepmRA[-1856/3429.5]? Proper motion in Right Ascensionmas/yrpos.pm;pos.eq.radoublenullablee_pmRA[0.1/87]? Uncertainty in pmRAmas/yrstat.error;pos.pm;pos.eq.rafloatnullablepmDE[-3806.2/1471]? Proper motion in Declinationmas/yrpos.pm;pos.eq.decdoublenullablee_pmDE[0.1/50]? Uncertainty in pmDEmas/yrstat.error;pos.pm;pos.eq.decfloatnullableDist[3.8/20]? Distancepcpos.distance;pos.heliocentricfloatnullablee_Dist[0.002/2]? Uncertainty in Distpcstat.errorfloatnullableRV-l[-102.8/83.8]? Published Radial velocitykm/sphys.veloc;pos.heliocentricdoublenullablee_RV-l[0.009/3]? Uncertainty in RV-lkm/sstat.errorfloatnullabler_SpTl[701/773]? Reference for SpT (see refs.dat file)meta.ref;pos.frameintnullabler_pmRA[716/753]? Reference for pmRA/pmDE (see refs.dat file)meta.ref;pos.pm;pos.eq.raintnullabler_Dist[726/753]? Reference for Dist (see refs.dat file)meta.ref;pos.frameintnullabler_RV-l[720/772]? Reference for RV-l (see refs.dat file)meta.ref;pos.frameintnullableSpTSpectral typesrc.spTypef_SpTFlag on spectral type (1)meta.codecharRV[-102.8/83.8] Radial velocitykm/sphys.veloc;pos.heliocentricdoublee_RV[0.009/3] RV uncertaintykm/sstat.errorfloatUVel[-92.2/65.3] U space velocityphys.veloc;pos.cartesian.xfloate_UVel[0.03/7] UVel uncertaintystat.errorfloatVVel[-122.5/53.8] V space velocityphys.veloc;pos.cartesian.yfloate_VVel[0.02/13.5] VVel uncertaintystat.errorfloatWVel[-51.64/78.6] W space velocityphys.veloc;pos.cartesian.zfloate_WVel[0.02/5.7] WVel uncertaintystat.errorfloatProbTD to D probability ratiostat.probabilitycharPopPopulation (G1)meta.codecharNameStar identifier (JHHMM+DDMMA)meta.id;meta.maincharf_NameFlags on Name (1)meta.codecharJ/ApJS/257/45/tableb1Simulated UCD population ages under different assumptionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAge[6/12] Maximum age of the sample, {tau}Gyrtime.age;stat.maxintflagFlag (1)meta.code.errorcharSFRStar formation rate (2)phys.SFRcharalphaMass function power law index(ices) (3)stat.fit.paramcharModelsBrown dwarf evolution models (4)meta.bibcharMBDM[0.01/0.03] Minimum brown dwarf masssolMassphys.mass;stat.minfloatMage[0.2/9.7] late-M dwarf age (5)Gyrtime.agefloate_Mage[0.0/1.4] Uncertainty in MageGyrstat.errorfloatLage[1.7/9.6] L dwarf age (5)Gyrtime.agefloate_Lage[0.3/1.3] Uncertainty in LageGyrstat.errorfloatTage[2.4/8.8] T dwarf age (5)Gyrtime.agefloate_Tage[0.7/2.0] Uncertainty in TageGyrstat.errorfloatchi2[0.1/359.3] {chi}^2^ goodness of fitstat.fit.goodnessfloatJ/ApJS/257/45/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference codemeta.noteintBibCodeBibcode of the referencemeta.bib.bibcodecharAuthFirst author's name(s)meta.bib.authorcharCommVizieR catalog referencemeta.id;meta.datasetchar