J/AJ/159/257ivo://CDS.VizieR/J/AJ/159/257doi:10.26093/cds/vizier.51590257CDSBest W.M.J.Liu M.C.Magnier E.A.Dupuy T.J.2022-05-12T05:11:53Z2020-07-24T12:30:49ZCDS support team

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

cds-question@unistra.frbrown-dwarfsproper-motionsvisible-astronomytrigonometric-parallaxinfrared-photometrysurveysWe present parallaxes, proper motions, and J-band photometry for 348 L and T dwarfs measured using the wide-field near-infrared camera (WFCAM) on the United Kingdom Infrared Telescope (UKIRT). This is the largest single batch of infrared parallaxes for brown dwarfs to date. Our parallaxes have a median uncertainty of 3.5mas, similar to most previous ground-based infrared parallax surveys. Our target list was designed to complete a volume-limited parallax sample of L0-T8 dwarfs out to 25pc spanning declinations -30{deg} to +60{deg} (68% of the sky). We report the first parallaxes for 165 objects, and we improve on previous measurements for another 53 objects. Our targets include 104 objects (mostly early-L dwarfs) having Gaia DR2 parallax measurements with which our parallaxes are consistent. We include an extensive comparison of previous literature parallaxes for L and T dwarfs with both our results and Gaia DR2 measurements, identifying systematic offsets for some previous surveys. Our parallaxes confirm that 14 objects previously identified as wide common proper motion companions to main-sequence stars have distances consistent with companionship. We also report new J_MKO_ photometry for our targets, including the first measurements for 193 of our targets and improvements over previously published J_MKO_ photometry for another 60 targets. Altogether, our parallaxes will enable the first population studies using a volume-limited sample spanning spectral types L0-T8 defined entirely by parallaxes.2020AJ....159..257Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/159/257CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIII/198 : Palomar/MSU nearby star spectro. survey (Hawley+, 1997)II/319 : UKIDSS-DR9 LAS, GCS and DXS Surveys (Lawrence+ 2012)I/345 : Gaia DR2 (Gaia Collaboration, 2018)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)J/ApJ/564/421 : Spectra of T dwarfs. I. (Burgasser+, 2002)J/AJ/123/3409 : SDSS M, L, and T dwarfs (Hawley+, 2002)J/AJ/126/1526 : IR photometry of ultracool dwarfs (Bouy+, 2003)J/AJ/126/2487 : T dwarfs in the southern hemisphere (Burgasser+, 2003)J/AJ/126/2421 : 2MASS-Selected sample of ultracool dwarfs (Cruz+, 2003)J/AJ/125/3302 : HST binary very low mass stars and brown dwarfs (Gizis+, 2003)J/AJ/126/2048 : NStars project: the Northern Sample. I. (Gray+, 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 photo. and spectroscopy for L and T dwarfs (Knapp+, 2004)J/other/ARA+A/42.685 : Young stars near the Sun (Zuckerman+, 2004)J/A+A/435/363 : Southern Infrared Proper Motion Survey (Deacon+, 2005)J/ApJ/637/1067 : Near-IR spectral classification of T dwarfs (Burgasser+, 2006)J/AJ/131/2722 : New L and T dwarfs from the SDSS (Chiu+, 2006)J/AJ/132/161 : NStars project: The southern sample. I. (Gray+, 2006)J/AJ/132/891 : Binaries among nearby L dwarfs (Reid+, 2006)J/MNRAS/374/664 : Stellar atmospheric param. in MILES library (Cenarro+, 2007)J/AJ/133/439 : Luminosity function of M7-L8 ultracool dwarfs (Cruz+, 2007)J/AJ/134/1162 : 11 new T dwarfs in 2MASS (Looper+, 2007)J/ApJ/689/1295 : Lithium test implications for brown dwarfs (Kirkpatrick+,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/493/L27 : Parallaxes of 10 ultracool subdwarfs (Schilbach+, 2009)J/ApJ/710/1142 : SpeX spectroscopy of low mass binaries. I. (Burgasser+, 2010)J/ApJS/190/100 : NIR proper motion survey using 2MASS (Kirkpatrick+, 2010)J/AJ/139/1808 : Colors and kinematics of SDSS L dwarfs (Schmidt+, 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/142/138 : All-sky catalog of bright M dwarfs (Lepine+, 2011)J/ApJS/201/19 : Hawaii Infrared Parallax Program. I. (Dupuy+, 2012)J/ApJ/752/56 : BDKP. III. Parallaxes for 70 ultracool dwarfs (Faherty+, 2012)J/MNRAS/427/3280 : Ultra-cool dwarfs at low Galactic latitudes (Folkes+, 2012)J/ApJ/754/44 : The AstraLux Large M-dwarf Survey (Janson+ 2012)J/ApJ/753/156 : T/Y brown dwarfs with WISE photometry (Kirkpatrick+, 2012)J/MNRAS/433/457 : 76 T dwarfs from the UKIDSS LAS (Burningham+, 2013)J/MNRAS/430/1171 : Sub-stellar birth rate from UKIDSS (Day-Jones+, 2013)J/ApJS/205/6 : T dwarf population revealed by WISE (Mace+, 2013)J/ApJ/762/88 : Young stellar kinematic group candidate members (Malo+, 2013)J/A+A/556/A133 : Astrometric orbit of DENIS-P J082303.1-49120 (Sahlmann+, 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/ApJ/792/119 : Companions to nearby stars from Pan-STARRS 1 (Deacon+, 2014)J/ApJ/784/156 : Parallaxes 1507 nearby mid-to-late M dwarfs (Dittmann+, 2014)J/ApJ/783/121 : BANYAN II. Nearby young assoc. candidate members (Gagne+,2014)J/ApJ/789/102 : Properties of late M-dwarfs (Janson+, 2014)J/ApJ/783/122 : AllWISE motion survey (Kirkpatrick+, 2014)J/ApJ/787/126 : WISE reduced proper motions and spectral types (Luhman+, 2014)J/MNRAS/443/2327 : New proper motion objects from UKIDSS GPS (Smith+, 2014)J/MNRAS/454/593 : Young moving groups in solar neighbourhood (Bell+, 2015)J/ApJ/814/118 : L/T transition dwarfs search with PS1 & WISE. II. (Best+,2015)J/ApJS/219/33 : BANYAN. VII. Candidate YMG members from BASS (Gagne+, 2015)J/MNRAS/449/3651 : L and T dwarfs from UKIDSS LAS (Marocco+, 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/833/96 : Hawaii IR parallax program. II. Ultracool dwarfs (Liu+, 2016)J/ApJ/817/112 : NEOWISE/AllWISE high proper motion objects (Schneider+, 2016)J/AJ/152/24 : Trigo. parallaxes of 134 low-mass stars (Weinberger+, 2016)J/AJ/154/147 : Astrometry&photometry late-type dwarfs&subdwarfs (Dahn+, 2017)J/MNRAS/468/3499 : Partially resolved binaries in PS1 data (Deacon+, 2017)J/ApJS/231/15 : Astrom. monitoring ultracool dwarf binaries (Dupuy+, 2017)J/AJ/153/14 : Solar neighbourhood XXXVIII. Nearby M dwarf (Winters+, 2017)J/ApJS/234/1 : Catalog 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/155/265 : Solar neighbourhood. XLIV. RECONS discoveries (Henry+, 2018)J/ApJ/867/109 : Spitzer observations of Y and T dwarfs (Martin+, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/159/257https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/159/257http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/159/257https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/159/257https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/159/257http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/159/257GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/159/257/table1 (Observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/159/257/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/159/257/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/159/257/table1?GETtext/xml+votable180.050000true0.300687215.59320670.005555555555555556Cone search capability for table J/AJ/159/257/table4 (UKIRT/WFCAM parallaxes and proper motions)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/159/257/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/159/257/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/159/257/table4?GETtext/xml+votable180.050000true0.301370715.59256570.005555555555555556Cone search capability for table J/AJ/159/257/table7 (Updates to common proper motion companion status)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/159/257/table7?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/159/257/table7?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/159/257/table7?GETtext/xml+votable180.050000true3.773890329.92786940.0055555555555555566/290 320 544 586 669 733 749 763 840 849 935 1006 1015 1188 1637 1672 1765 1825 1873 1890 2083 2167 2291 2354 2357 2441 2502 2592 2608 2646 2995 3040 3192 4116 4226 4288 4316 4342 4453 4543 4630 4635 4783 4790 4808 4825 4839 5065 5211 5317 5413 5621 5817 5840 5919 5939 6047 6163 6261 6462 6550 6597 6601 6761 6764 6783 6817 6844 7005 7030 7092 7204 7220 7362 7364 7369 8215 8219 8348 8371 8402 8475 8480 8530 8625 8761 8808 9063 9169 9173 9318 9417 9449 9534 9563-9564 9656 9715 9720 9784 9914 9921 9959 9986 10037 10106 10142 10292 10319 10555 10628 10654 10657 10665 10760 10807 10813 10849 10975 11074 11279 11292 11450 11453 11468 11554 12369 12427 12582 12638 12743 13139 13407 13432 13450 13462 13496 13669 13678 13790 14127 14203 14351 14492 14638 14873 14965 15144 15320 15407 16570 16589 16815 16850 16856 16873 16983 17003 17096 17121 17137 17226 17276 17299 17332 17424 17530 17630 17738 17760 17781 17968 18101 18132 18138 18166 18266 18280-18281 18303 18375 18423 18481 18642 18741 18869 19121 19352 19369 19423 19540 19608 19646-19647 19657 19697 19895 19899 20001 20326 20415 20436 20451 20941 21105 21111 21157 21171 21295 21375 21389 21397 21401 21637 21809 21835 21861 21880 21899 22300 22597 22600 22810 22868 22919 23086 23184 23274 23318 23321 23355 23473 23654 23723 23791 23882 24040 24573 24769 25170 25231 25248 25432-25433 25558 25591 25623 25842 26117 26196 26223 26282 26300 26393 26402 26448 26642 26908 27058 27201 27359 27368 27395 27414 27514 27541 27547 27635 27648 27653 27685 27698 27730 27988 28004 28006 28148 28316 28346 28382 28471 28530 28612 29018 29384 29452 29657 29678 29789 29987 30061 30159 30916 31187 31225 31269 31324 31411 31501-31502 31549 31601 31747 31933 31992 31998 32183 32260 32337 32609 32757 34645 35951 36009 36081 36223 36237 36253 36560 36821 36845 38855 38880 40022 40300 40332 40397 40403 40488 40656 40731 40843 40887 40952 43977 44139 44259 44372 44416 44486 44658 44978 45006 46957 47030 47997 48231 48252 48593 48611 48637 48990 491401.486179365615702e-19 1.6921341730348006e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/159/257?format=asciiOpticalInfrareddefaultJ/AJ/159/257/table1ObservationsSimbadNameSimbad column added by the CDSmeta.idcharnullableNameStar namemeta.id;meta.maincharprimaryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintf_NameSpecific star notes (1)meta.codecharSpT-opOptical spectral type (2)src.spTypeSpT-irInfrared spectral type (2)src.spTypecharJmag[12.63/19.06]? mean pipeline measured MKO J band magnitudemagphot.mag;em.IR.Jfloatnullablee_Jmag[0.02/0.02]? Uncertainty in Jmagmagstat.error;phot.magfloatnullableFWHM[0.72/1.5]? mean Full Width at Half Maximumarcsecinstr.bandwidthfloatnullablee_FWHM[0.05/0.52]? Uncertainty (Root Mean Square) in FWHMarcsecstat.error;phys.angSizefloatnullabledAirmass[0.006/0.301]? Maximum difference in airmass across all epochsobs.airMassfloatnullableTintExposure time for each image (3)stime.duration;obs.exposurecharNfr[18/1066] Total number, frames obtainedmeta.numberintNep[1/18] Total number, epoch (nights) observedmeta.numberintdt[0.0/3.7] Time span ({Delta}t)yrtime;arith.difffloatNref[25/3394]? Number of stars used for the astrometric reference framemeta.numberintnullableNcal[10/3303]? Number of subset of Nref used for absolute astrometric calibrationmeta.numberintnullableNabs[4/1077]? Number of subset of Nref used to correct the final parallaxes from relative to absolutemeta.numberintnullableDomega[-1.9/3.6]? Offset, relative to absolute parallax computed for each fieldmaspos;arith.difffloatnullablee_Domega[0.0/1.2]? Uncertainty in Domegamasstat.errorfloatnullabler_NameDiscovery reference for star (See refs.dat file)meta.ref;pos.framer_SpTSpectral type reference (See refs.dat file)meta.ref;pos.frame_RAPosition from Simbad (right ascension part)degpos.eq.ra;meta.mainnullable_DEPosition from Simbad (declination part)degpos.eq.dec;meta.mainnullableJ/AJ/159/257/table4UKIRT/WFCAM parallaxes and proper motionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharf_NameFlag(s) on Name (1)meta.codecharRAJ2000Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[-30/60] Declination (J2000)degpos.eq.dec;meta.mainEpoch[56782/57681] Epoch of first observation, Julian Date -2400000.5dtime.epochdoubleomega-rel[15/158] Relative parallax ({omega}_rel_)maspos.parallax.trigfloate_omega-rel[1.5/10.6] Uncertainty in omega-relmasstat.errorfloatpmRA-rel[-1217/1232] Relative proper motion in RA, ({mu}_{alpha},rel_cos{delta})mas/yrpos.pm;pos.eq.rafloate_pmRA-rel[1/15.1] Uncertainty in pmRA-relmas/yrstat.error;pos.pmfloatpmDE-rel[-1843/1466] Relative proper motion in DE ({mu}_{delta},rel_)mas/yrpos.pm;pos.eq.decfloate_pmDE-rel[1.1/11.1] Uncertainty in pmDE-relmas/yrstat.error;pos.pmfloatomega-abs[15.7/159.2] Absolute parallax ({omega}_abs_) (2)maspos.parallax.trigfloate_omega-abs[1.5/10.6] Uncertainty in omega-abs (2)masstat.errorfloatpmRA-abs[-1225/1238] Absolute proper motion in RA, ({mu}_{alpha},abs_cos{delta} (2)mas/yrpos.pm;pos.eq.rafloate_pmRA-abs[1/15.1] Uncertainty in pmRA-abs (2)mas/yrstat.error;pos.pmfloatpmDE-abs[-1848/1461] Absolute proper motion in DE ({mu}_{delta},abs_) (2)mas/yrpos.pm;pos.eq.decfloate_pmDE-abs[1.1/11.1] Uncertainty in pmDE-abs (2)mas/yrstat.error;pos.pmfloatchi2[3.2/58.9] smallest {chi}^2 among the IRLS+MCMC chainsstat.fit.chi2floatdof[7/31] Degrees of freedom for datasetstat.fit.dofintJ/AJ/159/257/table5*Objects with discrepant parallaxesNameStar namemeta.id;meta.maincharsigma[-3.2/2.3] Parallax difference / total uncertainty ({Delta}_{omega}_/{sigma}_{Delta}_{omega}__)stat.error;pos.parallax;arith.difffloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintf_NameFlag on Name (1)meta.codecharomega-abs[26.6/84.6] Absolute parallax, this workmaspos.parallax.trigfloate_omega-abs[1.8/5.9] Uncertainty in omega-absmasstat.errorfloatomega-lit[36.61/116.0] Relative parallaxmaspos.parallax.trigfloate_omega-lit[1.6/29.0] Uncertainty in omega-litmasstat.errorfloatr_omega-lit[1/6] Literature source, omega-lit (2)meta.ref;pos.frameintDomega[-73.1/25.1] Parallax difference ({Delta}_{omega}_)maspos.parallax.trigfloate_Domega[3.0/29.1] Uncertainty in Domegamasstat.errorfloatJ/AJ/159/257/table6Updates to young moving group membership statusrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharSpTSpectral Typesrc.spTypecharDist-phot[13.1/31.2] Photometric Distancepcpos.distancefloate_Dist-phot[1.3/3.1] Uncertainty in Dist-photpcstat.errorfloatAssoc-litLiterature Association (1)meta.code.classcharMem-lit[86.4/97.1] Literature membership probability (2)%meta.code.memberfloatr_Assoc-litReference for literature association (3)meta.ref;pos.framecharDist-par[19.2/43.3] Parallax based Distancepcpos.distancefloate_Dist-par[1.4/7.1] Uncertainty in Dist-parpcstat.errorfloatAssoc-newUpdated Association (1)meta.code.classcharMem-new[97/100] Updated membership probability (4)%meta.code.memberfloatf_Assoc-newFlag on Association (5)meta.codecharJ/AJ/159/257/table7Updates to common proper motion companion statusSimbadNameSimbad column added by the CDSmeta.idcharnullablepmRA-comp[-1011.7/372.6] Companion proper motion in RA, ({mu}_{alpha},sec_cos_{delta}_)mas/yrpos.pm;pos.eq.rafloate_pmRA-comp[1.7/5.0] Uncertainty in pmRA-compmas/yrstat.error;pos.pmfloatf_pmRA-compFlag on pmRA-comp (1)meta.codecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNamePrimary namemeta.id;meta.maincharSpT-priPrimary spectral typesrc.spTypecharomega-pri[22.25/70.02] Primary parallaxmaspos.parallax.trigfloate_omega-pri[0.04/3.2] Uncertainty in omega-primasstat.errorfloatf_omega-priFlag on omega-pri (1)meta.codecharpmRA-pri[-995.2/381.54] Primary proper motion in RA, ({mu}_{alpha},pri_cos{delta})mas/yrpos.pm;pos.eq.rafloate_pmRA-pri[0.05/7] Uncertainty in pmRA-primas/yrstat.error;pos.pmfloatf_pmRA-priFlag on pmRA-pri (1)meta.codecharpmDE-pri[-512.98/244.28] Primary proper motion in DE ({mu}_{delta}_)mas/yrpos.pm;pos.eq.decfloate_pmDE-pri[0.04/6.1] Uncertainty in pmDE-primas/yrstat.error;pos.pmfloatf_pmDE-priFlag on pmDE-pri (1)meta.codecharCompCompanion namemeta.id.assoccharSpT-compCompanion spectral typesrc.spTypecharf_SpT-compFlag on SpT-comp (1)meta.codecharomega-comp[26.6/70.1] Companion parallaxmaspos.parallax.trigfloate_omega-comp[2.5/4.3] Uncertainty in omega-compmasstat.errorfloatf_omega-compFlag on omega-comp (1)meta.codecharpmDE-comp[-513.8/250.1] Companion proper motion in DE ({mu}_{delta}_)mas/yrpos.pm;pos.eq.decfloate_pmDE-comp[1.9/4.6] Uncertainty in pmDE-compmas/yrstat.error;pos.pmfloatf_pmDE-compFlag on pmDE-comp (1)meta.codecharSep[6.4/265.0] Separationarcsecpos.angDistancefloatRefsReferences (2)meta.ref;pos.framechar_RAPosition from Simbad (right ascension part)degpos.eq.ra;meta.main_DEPosition from Simbad (declination part)degpos.eq.dec;meta.mainJ/AJ/159/257/refsReferences used for table 1recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRef[1-84] Reference numbermeta.id;meta.mainintAutorsFirst autor(s) of the referenceobs.observercharBIBBibcode of the referencemeta.bib.bibcodecharCatCatalog associatedmeta.id.assoc;meta.tablechar