J/ApJ/637/1067ivo://CDS.VizieR/J/ApJ/637/1067doi:10.26093/cds/vizier.16371067CDSBurgasser A.J.Geballe T.R.Leggett S.K.Kirkpatrick J.D.,Golimowski D.A.2018-01-05T08:57:20Z2007-09-30T22:28:43ZCDS support team

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

cds-question@unistra.frdwarf-starsinfrared-sourcesstellar-spectral-typesA revised near-infrared classification scheme for T dwarfs is presented, based on and superseding prior schemes developed by Burgasser and coworkers (2002ApJ...564..421B) and Geballe and coworkers (2002ApJ...564..466G), and defined following the precepts of the MK process. Drawing from two large spectroscopic libraries of T dwarfs identified largely in the Sloan Digital Sky Survey and the Two Micron All Sky Survey, nine primary spectral standards and five alternate standards spanning spectral types T0-T8 are identified that match criteria of spectral character, brightness, absence of a resolved companion, and accessibility from both the Northern and Southern Hemispheres.2006ApJ...637.1067Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/637/1067CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/127/3553 : JHK photometry and spectroscopy for L and T dwarfsJ/ApJ/564/421 : Spectra of T dwarfs. I. (Burgasser+, 2002)J/AJ/126/2487 : T dwarfs in the southern hemisphere (Burgasser+, 2003)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/637/1067https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/637/1067http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/637/1067https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/637/1067https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/637/1067http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/637/1067GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/637/1067/table14 (T Dwarf compendium)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/637/1067/table14?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/637/1067/table14?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/637/1067/table14?GETtext/xml+votable180.050000true0.056416725.9050.0055555555555555566/320 4316 4783 4790 4948 5077 6080 6163 6261 7291 8478 9009 9564 9597 9642 11940 13425 15144 17166 17772 17814 18156 18300 19121 19144 19647 20273 20896 20993 21296 21861 21880 22521 22681 22759 22810 22851 24694 25100 25443 25540 26020 26210 26248 26861 27074 27653 27698 27730 28344 31319 31411 31419 32337 33257 35572 36072 38363 40228 40397 42739 44118 44286 45564 46334 46384 46607 47640 490771.1166583743361574e-19 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/637/1067?format=asciiOpticalInfrareddefaultJ/ApJ/637/1067/table13Comparison of T dwarf spectral typesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintONameTruncated namemeta.id;meta.maincharNameObject namemeta.idcharSpTypeNew spectral typesrc.spTypecharu_SpType[:p] Uncertainty flag on SpType (1)meta.code.error;src.spTypecharSpType2Spectral type from Burgasser et al. (2000ApJ...531L..57B)src.spTypecharu_SpType2[:p] Uncertainty flag on SpType2 (1)meta.code.errorcharSpType3Spectral type from Geballe et al. (2002ApJ...564..466G)src.spTypechare_SpType3? Error in SpType3stat.errorfloatnullableJ/ApJ/637/1067/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference codemeta.notecharBibcodeBibcodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharComCommentmeta.notecharJ/ApJ/637/1067/table14T Dwarf compendiumSimbadNameSimbad column added by the CDSmeta.idcharpmPA? Proper motion angle E from Ndegpos.pm;pos.posAngintnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameObject Name (1)meta.id;meta.maincharprimaryr_posReference for the positionmeta.ref;pos.framecharRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainEpochEpoch of position measurementyrtime.epochfloatu_SpTypeUncertainty flag on SpTypemeta.code.error;src.spTypecharSpTypeSpectral type from Burgasser et al. (2005)src.spTypecharSpSimbad column added by the CDSmeta.ref.urlcharr_zmagReference for zmag (2)meta.ref;pos.framecharzmag? The SDSS z (AB) magnitudemagphot.mag;em.opt.Ifloatnullablee_zmag? Uncertainty in zmagmagstat.error;phot.mag;em.opt.Ifloatnullabler_JmagFlag on Jmagmeta.ref;pos.framecharJmagThe 2MASS J magnitudemagphot.mag;em.IR.Jfloate_Jmag? Uncertainty in Jmagmagstat.error;phot.mag;em.IR.Jfloatnullabler_HmagFlag on Hmagmeta.ref;pos.framecharHmag? The 2MASS H magnitudemagphot.mag;em.IR.Hfloatnullablee_Hmag? Uncertainty in Hmagmagstat.error;phot.mag;em.IR.Hfloatnullabler_KsmagFlag on Ksmagmeta.ref;pos.framecharl_Ksmag[>] Upper limit flag on Ksmagmeta.code.errorcharKsmag? The 2MASS K_s_ magnitudemagphot.mag;em.IR.Kfloatnullablee_Ksmag? Uncertainty in Ksmagmagstat.error;phot.mag;em.IR.Kfloatnullabler_plxReference for plxmeta.ref;pos.framecharplx? Parallaxarcsecpos.parallax.trigfloatnullablee_plx? Uncertainty in plxarcsecstat.error;pos.parallaxfloatnullabler_pmReference for pmmeta.ref;pos.framecharpm? Proper motionarcsec/yrpos.pmfloatnullablee_pm? Uncertainty in pmarcsec/yrstat.errorfloatnullableRefsDiscovery and measurement referencesmeta.ref;pos.framechar