J/AJ/123/3409ivo://CDS.VizieR/J/AJ/123/3409doi:10.26093/cds/vizier.51233409CDSHawley S.L.Covey K.R.Knapp G.R.Golimowski D.A.Fan X.Anderson S.F.,Gunn J.E.Harris H.C.Ivezic Z.Long G.M.Lupton R.H.McGehee P.M.,Narayanan V.Peng E.Schlegel D.Schneider D.P.Spahn E.Y.,Strauss M.A.Szkody P.Tsvetanov Z.Walkowicz L.M.Brinkmann J.,Harvanek M.Hennessy G.S.Kleinman S.J.Krzesinski J.Long D.,Neilsen E.H.Newman P.R.Nitta A.Snedden S.A.York D.G.2023-04-06T16:50:49Z2006-11-30T23:17:54ZCDS support team

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

cds-question@unistra.frlate-type-starsmorgan-keenan-classificationinfrared-photometryAn extensive sample of M, L, and T dwarfs identified in the Sloan Digital Sky Survey (SDSS) has been compiled. The sample of 718 dwarfs includes 677 new objects (629 M dwarfs and 48 L dwarfs), together with 41 that have been previously published. All new objects and some of the previously published ones have new optical spectra obtained either with the SDSS spectrographs or with the Apache Point Observatory 3.5 m ARC telescope. Spectral types and SDSS colors are available for all objects; approximately 35% also have near-infrared magnitudes measured by 2MASS (Two Micron All Sky Survey) or on the Mauna Kea system. We use this sample to characterize the color-spectral type and color-color relations of late-type dwarfs in the SDSS filters and to derive spectroscopic and photometric parallax relations for use in future studies of the luminosity and mass functions based on SDSS data. We find that the i*-z* and i*-J colors provide good spectral type and absolute magnitude (Mi*) estimates for M and L dwarfs. Our distance estimates for the current sample indicate that SDSS is finding early M dwarfs out to ~1.5kpc, L dwarfs to ~100pc, and T dwarfs to ~20pc. The T dwarf photometric data show large scatter and are therefore less reliable for spectral type and distance estimation.2002AJ....123.3409Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/123/3409CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/123/567 : SDSS quasar catalog (Schneider+, 2002)B/2mass : The 2MASS database (IPAC/UMass, 2000)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/123/3409https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/123/3409http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/123/3409https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/123/3409https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/123/3409http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/123/3409GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/123/3409/table4 (SDSS M9, L, and T dwarfs with new optical spectra)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/123/3409/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/123/3409/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/123/3409/table4?GETtext/xml+votable180.050000true5.5387917-1.17783330.005555555555555556Cone search capability for table J/AJ/123/3409/spectra (Spectra list)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/123/3409/spectra?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/123/3409/spectra?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/123/3409/spectra?GETtext/xml+votable180.050000true31.3725-11.9916670.0055555555555555566/2 223 232 240 461 464 496 548-549 580 743 813 2208 4253 4719 4775 5112 5540 6539 6543 6598 6613 6625 6629 7369 7381 7518 8402 8436 8781 8783 8794 8805 9569 9677 9723 10072 10094 10097 10099 10194 10215 10234 10743 11505 11587 11591 11596 11608 11940 12807 17594 17747 17763-17764 17766 17769 17772 17776 18019 18032 18060 18062 18087 18300 18383 18683 18840 18852 18866 19022 19137-19138 19201 19726 19748-19750 19813 19857 20318 22171 22759 22950 23056 23064 23193 23195 23515 25015 25314 25853 25934-25935 25945-25946 25959 25969 25981 26005 26015 26019-26020 26080 26209-26210 26267 26861 26975 26981 27019 27029 27058 27648 27653 27680 27709 28427 28450 30061 31141 31147 31319 31323-31324 31340 31437 31488 32426 36602 36719 36784 439668.650015785639275e-20 9.710690472292815e-20https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/123/3409?format=asciiOpticalInfrareddefaultJ/AJ/123/3409/table1Template informationrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSpTypeSpectral type (G1)src.spTypecharNameObject namemeta.id;meta.maincharObsObservatory (1)meta.id;instr.obstycharNoteAlias namemeta.idcharspFileName of the Sloan ML template file in "ml" subdirectorymeta.id;meta.filecharJ/AJ/123/3409/table3Average color by spectral typerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSpTypeSpectral Type (G1)src.spTypecharr*-i*? r*-i* colour index mean valuemagphot.color;em.opt.R;em.opt.Ifloatnullablee_r*-i*? rms uncertainty on r*-i* (1)magstat.errorfloatnullablei*-z*? i*-z* colour index mean valuemagphot.color;em.opt.I;em.opt.Ifloatnullablee_i*-z*? rms uncertainty on i*-z* (1)magstat.errorfloatnullablez*-J? z*-J colour index mean value (J: 2MASS magnitude)magphot.color;em.IR;em.IRfloatnullablee_z*-J? rms uncertainty on z*-J (1)magstat.error;src.redshiftfloatnullablei*-J? i*-J colour index mean value (J: 2MASS magnitude)magphot.color;em.IR;em.IRfloatnullablee_i*-J? rms uncertainty on i*-J (1)magstat.errorfloatnullableJMAGAbsolute 2MASS J magnitude (2)magphys.magAbs;em.IR.JfloatJ/AJ/123/3409/table4SDSS M9, L, and T dwarfs with new optical spectraSourceSource (4)meta.bibcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSSDSS designationmeta.id;meta.maincharr*magr* magnitudemagphot.mag;em.opt.Rfloatu_r*magUncertainty flag on r*mag (when e_r*mag>0.5)meta.code.error;phot.magcharn_r*mag[b] Note on r*mag (1)meta.notechari*magi* magnitudemagphot.mag;em.opt.Ifloatu_i*magUncertainty flag on i*mag (when e_i*mag>0.2)meta.code.error;phot.magcharn_i*mag[b] Note on i*mag (1)meta.notecharz*magz* magnitude (e_z*mag always lower than 0.2)magphot.mag;em.opt.IfloatJmag? J magnitudemagphot.mag;em.IR.Jfloatnullablen_Jmag[i] Note on Jmag (2)meta.notecharHmag? H magnitudemagphot.mag;em.IR.Hfloatnullablen_Hmag[i] Note on Hmag (2)meta.notecharKsmag? 2MASS Ks magnitude unless otherwise notedmagphot.mag;em.IR.Kfloatnullablen_Ksmag[i] Note on KsJmag (2)meta.notecharSpTypeSpectral type (G1)src.spTypecharn_SpType[j] Note on SpType (3)meta.notecharSpType2Other possible spectral type (G1)src.spTypecharn_SpType2[jgmfe] Note on SpType2 (3)meta.notecharSpType3Other possible spectral type (G1)src.spTypecharn_SpType3[g] Note on SpType3 (3)meta.notecharn_Source[cdefhklmn, ] Note on Source (3)meta.notecharSDSSdatadisplay the recent SDSS datameta.ref.urlcharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainJ/AJ/123/3409/spectraSpectra listrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameNamemeta.id;meta.maincharRAJ2000Simbad right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Simbad declination (J2000)pos.eq.dec;meta.mainFITSfileName of the file containing the spectrum in "sp" subdirectorymeta.id;meta.filecharSimbadSimbad column added by the CDSchar