J/MNRAS/485/4423ivo://CDS.VizieR/J/MNRAS/485/4423doi:10.26093/cds/vizier.74854423CDSSmart R.L.Marocco F.Sarro L.M.Barrado D.Beamin J.C.,Caballero J.A.Jones H.R.A.2024-08-19T20:17:42Z2022-11-25T14:04:47ZCDS support team

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

cds-question@unistra.frmultiple-starsbrown-dwarfslate-type-starsvisible-astronomyWe identify and investigate known late M, L, and T dwarfs in the Gaia second data release. This sample is being used as a training set in the Gaia data processing chain of the ultracool dwarfs work package. We find 695 objects in the optical spectral range M8-T6 with accurate Gaia coordinates, proper motions, and parallaxes which we combine with published spectral types and photometry from large area optical and infrared sky surveys. We find that 100 objects are in 47 multiple systems, of which 27 systems are published and 20 are new. These will be useful benchmark systems and we discuss the requirements to produce a complete catalogue of multiple systems with an ultracool dwarf component. We examine the magnitudes in the Gaia passbands and find that the GBP magnitudes are unreliable and should not be used for these objects. We examine progressively redder colour-magnitude diagrams and see a notable increase in the main-sequence scatter and a bivariate main sequence for old and young objects. We provide an absolute magnitude-spectral subtype calibration for G and G_RP_ passbands along with linear fits over the range M8-L8 for other passbands.2019MNRAS.485.4423Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/485/4423CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)II/349 : The Pan-STARRS release 1 (PS1) Survey - DR1 (Chambers+, 2016)II/328 : AllWISE Data Release (Cutri+ 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/485/4423https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/485/4423http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/485/4423https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/485/4423https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/485/4423http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/485/4423GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/485/4423/table1 (Input catalogue entries with multiple Gaia DR2 matches within 20 arcsec)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/485/4423/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/485/4423/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/485/4423/table1?GETtext/xml+votable180.050000true1.14525-40.73511110.005555555555555556Cone search capability for table J/MNRAS/485/4423/table2 (Intrinsically bright (M_G_<14.0mag) objects matched to LT objects sorted by absolute magnitude (top) and matches with offset >5.0 arcsec sorted by separation (bottom))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/485/4423/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/485/4423/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/485/4423/table2?GETtext/xml+votable180.050000true181.8894481-39.54833810.005555555555555556Cone search capability for table J/MNRAS/485/4423/table3 (Data for Ultra-Cool Dwarfs in Gaia DR2)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/485/4423/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/485/4423/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/485/4423/table3?GETtext/xml+votable180.050000true0.2521849936.883148170.005555555555555556Cone search capability for table J/MNRAS/485/4423/table5 (New candidate binary systems containing LT dwarfs, identified in Gaia DR2)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/485/4423/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/485/4423/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/485/4423/table5?GETtext/xml+votable180.050000true25.4933685-46.56613050.005555555555555556Cone search capability for table J/MNRAS/485/4423/table6 (J1711+5430 and NLTT 44368 Gaia DR2 parameters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/485/4423/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/485/4423/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/485/4423/table6?GETtext/xml+votable180.050000true257.98901554.51125190.0055555555555555566/221 322 496 548 586 672 749 906 965 1028 1188 1357 1628 1637 1873 2044 2260 2291 2502 2702 3965 4116 4205 4224 4226 4250-4251 4262 4299 4400 4521 4536 4591 4630 4637 4669 4714 4716 4719 4729-4730 4769 4825-4826 4841 4873 4910 4921 4937 4946 4949 4964-4965 4975 4982 5010 5044 5097 5110 5147 5186 5211 5234 5293 5318 5352 5413 5464 5540 5551 5582 5621 5631 5634 5661 5665 5702 5718 5726 5804 5844 5854 5902 5919 6047 6080 6098 6111 6141 6165 6216 6223 6232 6328 6406 6432 6486 6518 6524 6539 6548 6563 6568 6582 6625 6629-6630 6646 6783 6844 7030 7033 7162 7173 7220 7242 7280 7284 7297 7364 7369 7381 7404 7420 7440 7469 7476 7499 7518 7533 7591 7680 7744 7846 7985 8127 8333 8342 8348 8350 8354 8374 8388 8402 8422 8475 8480 8486 8499 8544 8603 8625 8689 8701-8702 8719 8727 8731 8761 8808 8874 8900 8995 9009 9016 9018 9031 9082 9124 9146 9169 9199 9208 9224 9245 9253 9313 9318 9338 9385 9407 9419 9429 9434 9449 9467 9479 9483 9516 9534 9601 9628 9715 9847 9902 9921 9941 10037 10063 10089 10123 10234 10281 10341 10357 10363 10392 10409 10445 10475 10484 10516 10519 10555 10570 10576 10603 10608 10651 10665 10672 10690 10698 10702 10746 10749 10813 10819 10855 10858 10898 10922 10937 10975 11058 11067 11074 11077 11100 11158 11177 11216 11230 11232 11244 11247 11297 11340 11351 11446 11453 11472 11572 11587 11608 11693 11719 11797 11856 11862 11944 12045 12168 12253 12262 12369 12427 12430 12466 12582 13341 13672 13678 13885 14084 14858 14910 14926 15085 15320 15775 16021 16226 16293 16345 16375 16434 16546 16609 16639 16687 16757 16778 16793 16802 16850 16856 16867 16906 16983 17075 17096 17113 17115 17156 17242 17252 17259 17261 17332 17469 17530 17580 17594 17807 17883 17909 18019 18060 18062 18087 18101 18103 18113 18124 18157 18166 18209 18281 18303 18306-18307 18375 18387 18584 18683 18711 18726 18782 18802 18840 18910 18914 18925 18936 19137 19201 19224 19278 19280 19399 19507 19524 19572 19598 19630 19697 19721 19726 19735 19748 19763 19857 19895 19913 20040 20318 20415 20436 20591 20699 20754 20897 20996 21171 21209 21296 21637 21728 21835 21859 21881 21886 22177 22300 22759 22861 22937 22950 22996 23010 23056 23111 23193 23234 23237 23267 23275 23354 23470-23471 23791 23882 24105 24345 24566 24580-24581 24590 24632 24925 25044 25223 25266 25291 25314 25558 25590 25712 25846 25914 26015 26019 26046 26080 26095 26186 26210 26223 26236 26267 26279 26282 26287 26293 26297 26300 26307 26322 26383 26393 26403 26407 26430 26439 26468 26479 26497 26509 26526 26533 26587 26667 26754 26786 26945 26960 26965 26975-26976 26980 27019 27029 27058 27102 27114 27216 27280-27281 27366 27373 27377 27402 27405 27446 27590 27618 27635 27648 27667 27757 27764 27888 27910 27932 27943 28006 28018 28316 28388 28450 28498 28612-28613 28637 28847 29018 29301 29305 29452 29987 30061 30086 30505 30521 30613 30749 30883 30948 30956 31009 31011 31035 31062 31268 31309 31324 31336 31340 31372 31383 31445 31482 31489 31594 31601 31696 31720 31747 31871 31905 31982 32372 32402-32403 32462 32554 32574 32602 32648 32650 32690 32927 33037 33166 33374 33398 33437 33481 33666-33667 33767 34080 34102 34216 34400 34407 34434 34535 34626 34656 34660 34780 34803 34818-34819 34839 34866 34893 35022 35063 35106 35202-35203 35325 35364 35387 35412 35471 35495 35499 35509 35518 35538 35623 35630 35666 35864 35902 35943 36004 36223 36418 36458 36467 36560 36740 36772 36784 36821 36830 36919 37502 37565 38039 38164 38176 38340 38363 38683 38786 38812 38880 39109 39185 39440 39482 39485 39556 39807 40022 40332 40375 40485 40669 40738 40882 40901 40941 41006 41139 41557 41659 41984 42261 42635 43422 43475 43482 43512 43773 43860 43875 43957 43966 44314 44416 44486 44807 44929 44954 45108 45110 45178 45466 45494 45566 45752 45777 45834 45952 46068 46094 46103 46132 46138 46203 46208 46376 46602 46671 46781 46823 46961 47012 47192 47357 47439 47939 48171 48203 48234 48300 48455 48643 48672 48817 48883 48957 48990 49139-491401.1166583743361574e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/485/4423?format=asciiOpticaldefaultJ/MNRAS/485/4423/table1Input catalogue entries with multiple Gaia DR2 matches within 20 arcsecSimbadNameSimbad column added by the CDSmeta.idcharnullableIDShort namemeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintf_IDFlag on ID (1)meta.codecharNameDiscovery namemeta.id;meta.maincharOffsetOffset on the sky of the LTC position (generally 2MASS coordinates)arcsecpos;arith.difffloatGmagGaia DR2 G-band magnitude (G1)magphot.mag;em.optfloatG-GestG-Gest difference where Gest is the average magnitude for all objects in the LTCmagphot.mag;arith.difffloatplxGaia DR2 parallax (G1)maspos.parallax.trigfloate_plxError on plx (G1)masstat.error;pos.parallaxfloatpmTotal proper motionmas/yrpos.pmfloatpmPAPosition angle of the proper motiondegpos.pm;pos.posAngfloat_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/MNRAS/485/4423/table2Intrinsically bright (M_G_<14.0mag) objects matched to LT objects sorted by absolute magnitude (top) and matches with offset >5.0 arcsec sorted by separation (bottom)SimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDShort namemeta.idcharNameDiscovery namemeta.id;meta.maincharGaiaDR2Gaia DR2 Source identifier (G1)meta.idOffsetOffset on the sky of the LTC position (generally 2MASS coordinates)arcsecpos;arith.difffloatGmagGaia DR2 G-band magnitude (G1)magphot.mag;em.optfloatGestmagGest is the average magnitude for all objects in the LTCmagphot.mag;em.optfloatGMAGAbsolute magnitude in the G bandmagphys.magAbsfloat_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/MNRAS/485/4423/table3Data for Ultra-Cool Dwarfs in Gaia DR2SimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDShort namemeta.idcharRA_ICRSRight ascension (ICRS) at Ep=2015.5 (G1)degpos.eq.ra;meta.mainDE_ICRSDeclination (ICRS) at Ep=2015.5 (G1)degpos.eq.dec;meta.mainNameDiscovery namemeta.id;meta.maincharr_NameReference for Namemeta.ref;pos.framecharGaiaDR2Gaia DR2 Source identifier (G1)meta.idDistcatDistance DR2 to catalogue positionarcsecpos;arith.difffloatVBURMGMultiple code VB/UR/MG/SBmeta.codecharHmag? 2MASS H-band magnitudemagphot.mag;em.IR.Hfloatnullablee_Hmag? Error on Hmagmagstat.error;phot.magfloatnullableKmag? 2MASS K-band magnitudemagphot.mag;em.IR.Kfloatnullablee_Kmag? Error on Kmagmagstat.error;phot.magfloatnullableW1mag? AllWISE W1-band magnitudemagphot.mag;em.IR.3-4umfloatnullablee_W1mag? Error on W1magmagstat.error;phot.magfloatnullableW2mag? AllWISE W2-band magnitudemagphot.mag;em.IR.4-8umfloatnullablee_W2mag? Error on W2magmagstat.error;phot.magfloatnullableW3mag? AllWISE W3-band magnitudemagphot.flux.density;em.IR.8-15umfloatnullablee_W3mag? Error on W3magmagstat.error;phot.magfloatnullablegmagPS? Pan-STARRS g-band magnitudemagphot.mag;em.opt.Bfloatnullablee_gmagPS? Error on gmagPSmagstat.errorfloatnullablermagPS? Pan-STARRS r-band magnitudemagphot.mag;em.opt.Rfloatnullablee_rmagPS? Error on rmagPSmagstat.errorfloatnullableimagPS? Pan-STARRS i-band magnitudemagphot.mag;em.opt.Ifloatnullablee_imagPS? Error on imagPSmagstat.errorfloatnullablezmagPS? Pan-STARRS z-band magnitudemagphot.mag;em.opt.Ifloatnullablee_zmagPS? Error on zmagPSmagstat.errorfloatnullableymagPS? Pan-STARRS y-band magnitudemagphot.mag;em.IR.Jfloatnullablee_ymagPS? Error on ymagPSmagstat.error;pos.cartesian.yfloatnullableGmagGaia DR2 G-band magnitude (G1)magphot.mag;em.optfloate_GmagError on Gmag (1)magstat.error;phot.magfloatFGGaia DR2 G-band flux (G1)phot.flux.density;em.optfloate_FGError on FG (G1)stat.errorfloatBPmag? Gaia DR2 BP-band magnitude (G1)magphot.mag;em.opt.Bfloatnullablee_BPmag? Error on BPmag (1)magstat.error;phot.magfloatnullableFBP? Gaia DR2 BP-band flux (G1)phot.flux.density;em.opt.Bfloatnullablee_FBP? Error on FBP (G1)stat.errorfloatnullableRPmag? Gaia DR2 RP-band magnitude (G1)magphot.mag;em.opt.Rfloatnullablee_RPmag? Error on RPmag (1)magstat.error;phot.magfloatnullable_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.decnullableindexedplxlit? Published parallaxmaspos.parallax.trigfloatnullablee_plxlit? Error on plxlitmasstat.errorfloatnullableJmag? 2MASS J-band magnitudemagphot.mag;em.IR.Jfloatnullablee_Jmag? Error on Jmagmagstat.error;phot.magfloatnullableFRP? Gaia DR2 RP-band flux (G1)phot.flux.density;em.opt.Rfloatnullablee_FRP? Error on FRP (G1)stat.errorfloatnullableGaiaGestEstimated DR2 G from spectral typemagphot.mag;em.optfloatplxGaia DR2 parallax (G1)maspos.parallax.trigfloate_plxError on plx (G1)masstat.error;pos.parallaxfloatpmRAGaia DR2 proper motion in right ascension (G1)mas/yrpos.pm;pos.eq.radoublee_pmRAError on pmRA (G1)mas/yrstat.error;pos.pm;pos.eq.rafloatpmDEGaia DR2 proper motion in declination (G1)mas/yrpos.pm;pos.eq.decdoublee_pmDEError on pmDE (G1)mas/yrstat.error;pos.pm;pos.eq.decfloatr_VBURMGReference for VBURMGmeta.ref;pos.framecharSpTopOptical Spectral typesrc.spTypecharr_SpTopReference for SPTopmeta.ref;pos.framecharSpTnirNear infrared Spectral typesrc.spTypecharr_SpTnirReference for SpTnirmeta.ref;pos.framecharSpTphPhotometric Spectral typesrc.spTypecharr_SpTphReference for SpTphmeta.ref;pos.framecharr_plxlitReference for plxlitmeta.ref;pos.framecharJ/MNRAS/485/4423/table4Objects with published parallax estimates differing by more than 2.5{sigma} with the Gaia DR2 parallaxrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDShort namemeta.id;meta.maincharplxGaia DR2 parallaxmaspos.parallax.trigfloate_plxError on plxmasstat.error;pos.parallaxfloatplxlitPublished parallaxmaspos.parallax.trigfloate_plxlitError on plxlitmasstat.errorfloatr_plxlitReference for plxlit (1)meta.ref;pos.framecharJ/MNRAS/485/4423/table5New candidate binary systems containing LT dwarfs, identified in Gaia DR2SimbadNameSimbad column added by the CDSmeta.idcharnullableNameDiscovery namemeta.id;meta.maincharpmTotal proper motionmas/yrpos.pmfloatpmPAPosition angle of the proper motiondegpos.pm;pos.posAngfloatSpType? Spectral typesrc.spTypechar_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.decnullableindexedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintrho? Separation on the sky of the two componentsarcsecpos.angDistancefloatnullableRA_ICRSRight ascension (ICRS) at Ep=2015.5 (G1)degpos.eq.ra;meta.mainDE_ICRSDeclination (ICRS) at Ep=2015.5 (G1)degpos.eq.dec;meta.mainGmagGaia DR2 G-band magnitude (G1)magphot.mag;em.optfloatplxGaia DR2 parallax (G1)maspos.parallax.trigfloate_plxError on plx (G1)masstat.error;pos.parallaxfloatJ/MNRAS/485/4423/table6J1711+5430 and NLTT 44368 Gaia DR2 parametersSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDShort namemeta.id;meta.maincharplxGaia DR2 parallax (G1)maspos.parallax.trigfloate_plxError on plx (G1)masstat.error;pos.parallaxfloatpmRAProper motion in right ascension from Gaia DR2 (G1)mas/yrpos.pm;pos.eq.rafloate_pmRAError on pmRA (G1)mas/yrstat.error;pos.pm;pos.eq.rafloatpmDEProper motion in declination from Gaia DR2 (G1)mas/yrpos.pm;pos.eq.decfloate_pmDEError on pmDE (G1)mas/yrstat.error;pos.pm;pos.eq.decfloat_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main