J/AJ/154/151ivo://CDS.VizieR/J/AJ/154/151doi:10.26093/cds/vizier.51540151CDSBartlett J.L.Lurie J.C.Riedel A.Ianna P.A.Jao W.-C.Henry T.J.,Winters J.G.Finch C.T.Subasavage J.P.2024-10-11T20:09:47Z2018-08-06T06:20:27ZCDS support team

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

cds-question@unistra.frmultiple-starsproper-motionsvisible-astronomytrigonometric-parallaxinfrared-photometryphotometrystellar-spectral-typesline-intensitiesstellar-distanceAs a step toward completing and characterizing the census of the solar neighborhood, we present astrometric, photometric, and spectroscopic observations of 32 systems observed with the Cerro Tololo Inter-American Observatory 0.9 m and 1.5 m telescopes. Astrometry from the 0.9 m indicates that among the 17 systems that had no previous published trigonometric parallaxes, 14 are within 25 pc. In the full sample, nine systems have proper motions larger than 0.5"/yr, including 2MASS J02511490-0352459, which exceeds 2.0"/yr. VRI photometry from the 0.9 m and optical spectra from the 1.5 m indicate that the targets have V=11-22 mag and spectral types M3.0V-L3.0V. For 2MASS J23062928-0502285 (TRAPPIST-1), we present updated astrometry and photometric variability based on over 12 years of observations. Of the nine binaries in the sample, two promise mass determinations in the next decade: LHS 6167AB, an M4.5V system for which we present an accurate parallax placing the binary at 9.7 pc, and 2MASS J23515048-2537367AB, an M8.5V system at 21.1 pc for which we present the first evidence of an unseen, low-mass companion. Most importantly, Na I and K I gravity indicators, H{alpha} measurements, long-term photometric variability, locations on the H-R diagram, and kinematic assessments indicate that as many as 13 of the systems are young, including candidate members of young moving groups, with ages less than ~120 Myr.2017AJ....154..151Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/154/151CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/239 : The Hipparcos and Tycho Catalogues (ESA 1997)III/198 : Palomar/MSU nearby star spectroscopic survey (Hawley+ 1997)I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)I/337 : Gaia DR1 (Gaia Collaboration, 2016)I/345 : Gaia DR2 (Gaia Collaboration, 2018)J/AJ/106/773 : Mass-luminosity relation (Henry+, 1993)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/A+A/420/183 : Spectroscopic survey in solar neighborhoodJ/A+A/442/211 : Spectroscopic distances of 322 NLTT stars (Scholz+, 2005)J/AJ/129/413 : New high proper motion stars (-90<DE< -47)J/AJ/130/1658 : New high proper motion stars (-47<{delta}<00)J/A+A/460/695 : Search for Associations Containing Young starsJ/AJ/132/866 : New M dwarfs in solar neighborhood (Riaz+, 2006)J/AJ/132/891 : Binaries among nearby L dwarfs (Reid+, 2006)J/AJ/133/439 : Luminosity function of M7-L8 ultracool dwarfs (Cruz+, 2007)J/AJ/133/2898 : New proper-motion stars (-90<DE< -47) (Finch+, 2007)J/AJ/134/252 : New nearby white dwarf systems (Subasavage+, 2007)J/AJ/136/1290 : Ultracool dwarfs from the 2MASS (Reid+, 2008)J/ApJ/699/649 : Young M dwarfs within 25pc. I. (Shkolnik+, 2009)J/ApJ/705/1416 : Volume-limited sample of M7-M9.5 dwarfs <20pcJ/ApJ/723/684 : NIRSPEC ultracool dwarf radial velocity surveyJ/MNRAS/403/1949 : UBV(RcIc)JHK photometry of HIP nearby stars (Koen+, 2010)J/AJ/141/21 : CCD distance estimates of SCR targets (Winters+, 2011)J/AJ/142/10 : New proper motion stars 0.40"/yr>pm>=0.18"/yr (Boyd+, 2011)J/AJ/142/92 : New proper motion stars with pm>=0.18"/yr (Boyd+, 2011)J/AJ/144/64 : Solar neighborhood. XXVIII. Substellar companionsJ/AJ/144/99 : Near-IR spectroscopy of 36 late M dwarfs (Deshpande+, 2012)J/ApJ/758/56 : Young M dwarfs within 25pc. II. Kinematics (Shkolnik+, 2012)J/AJ/147/94 : Solar neighborhood. XXXII. L and M dwarfs (Dieterich+, 2014)J/ApJ/789/102 : Properties of late M-dwarfs (Janson+, 2014)J/AJ/149/5 : Solar neighborhood. XXXV. Distances to M dwarfsJ/AJ/150/6 : Solar neighborhood. XXXVI. VRI variability of M dwarfsJ/AJ/150/50 : Speckle interferometry at SOAR in 2014 (Tokovinin+, 2015)J/MNRAS/454/593 : Young moving groups in solar neighbourhood (Bell+, 2015)J/AJ/151/160 : 1103 parallaxes and proper motions from URAT (Finch+, 2016)J/AJ/152/24 : Trigonometric parallaxes of 134 low-mass starsJ/AJ/152/141 : Solar neighborhood. XXXVII. RVs for M dwarfsJ/AJ/153/14 : Solar neighborhood XXXVIII. Nearby M dwarf systemsJ/AJ/153/95 : Catalog of Suspected Nearby Young Stars (Riedel+, 2017)J/AJ/154/32 : Solar neighborhood. XXXIX. Nearby white dwarfshttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/154/151https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/154/151http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/154/151https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/154/151https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/154/151http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/154/151GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/154/151/table13 (Astrometric results (table 1) , photometry and spectral types (table 3))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/154/151/table13?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/154/151/table13?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/154/151/table13?GETtext/xml+votable180.050000true24.8405-39.60252780.005555555555555556Cone search capability for table J/AJ/154/151/table8 (Evaluation of Wide Common Proper Motion Pairs)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/154/151/table8?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/154/151/table8?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/154/151/table8?GETtext/xml+votable180.050000true164.616625-10.77513890.0055555555555555566/16609 17019 17712 18726 21180 21420 25616 25669 26706 34289 34622 34701 34708 34776 35247 35923 36842 36845 40332 40435 40801 44456 44518 44793 44866 46922 46962 47061 48093 48684 48800 490298.650015785639275e-20 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/154/151?format=asciiOpticalInfrareddefaultJ/AJ/154/151/table13Astrometric results (table 1) , photometry and spectral types (table 3)r_Var[2/4] Reference for Var (2)meta.ref;pos.frameintFlare[2006/2013]? Year of flare detection in the astrometric framesyrtime.epochintnullableJmag[7.74/13.059] 2MASS J band magnitudemagphot.mag;em.IR.JfloatHmag[7.146/12.254] 2MASS H band magnitudemagphot.mag;em.IR.HfloatKsmag[6.891/11.69] 2MASS K_S_ band magnitudemagphot.mag;em.IR.KfloatSpTypeMK spectral typesrc.spTypecharr_SpType[3/8] Reference for SpType (2)meta.ref;pos.frameintJoint[J-] Joint? (3)meta.codecharSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSystem namemeta.id;pos.frame;meta.maincharprimarymoreindicates data in tables 4,7,8,9 for this objectmeta.ref.urlcharRAJ2000Hour of Right Ascension (J2000) (1)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000) (1)pos.eq.dec;meta.mainFilt[VRI] Filter usedinstr.setup;instr.filtercharNseas[3/10] Number of seasons observed (2)meta.numberintn_Nseas[cs] Note on Nseas (3)meta.notecharNfrm[44/167] Number of frames used in reductionsmeta.numberintDate0[2003.94/2005.89] Starting date of the time intervalyrtime.startfloatDate1[2007.43/2016.73] Ending date of the time intervalyrtime.endfloatNyr[2.24/12.15] Number of years of coverageyrmeta.numberfloatNref[5/13] Number of reference starsmeta.numberintRplx[26.96/131.14] Relative trigonometric parallax {pi}(rel)maspos.parallax.trigfloate_Rplx[0.62/3.02] Uncertainty in Rplxmasstat.errorfloatCplx[0.36/3.04] Parallax correctionmasarith.factorfloate_Cplx[0.04/0.76] Uncertainty in Cplxmasstat.errorfloatAplx[27.77/132.07] Absolute trigonometric parallax {pi}(abs)maspos.parallax.trigfloate_Aplx[0.63/3.02] Uncertainty in Aplxmasstat.errorfloatpm[129.1/2149.7] Proper motionmas/yrpos.pmfloate_pm[0.3/2.5] Uncertainty in pmmas/yrstat.errorfloatPA[38.9/277.5] Position angledegpos.posAngfloate_PA[0.03/1] Uncertainty in PAdegstat.errorfloatVtan[10.4/112.4] Derived tangential velocity (4)km/sphys.veloc.transversefloatNoteNote(s) (5)meta.notecharn_Name[a] Note on name (1)meta.notecharVmag[11.63/21.61] CTIO V band magnitudemagphot.mag;em.opt.VfloatRmag[10.53/18.81] CTIO R band magnitudemagphot.mag;em.opt.RfloatImag[9.12/16.55] CTIO I band magnitudemagphot.mag;em.opt.IfloatNightsNumber of nights of VRI observationsmeta.numbercharRef[1/9] Photometry reference (2)meta.refintVar[8.1/46.4] Variability in the filter usedmmagsrc.var.amplitudefloatJ/AJ/154/151/table4Spectral Indices from the RECONS 1.5 m Spectroscopy Program and Radial Velocities from the LiteraturerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJoint[J-] Joint? (2)meta.codecharNameSystem namemeta.id;pos.framecharSpTypeMK spectral type from this work (1)src.spTypecharEW(Ha)[-24.59/0.25]? H{alpha} equivalent width ({AA})0.1nmspect.line.eqWidth;em.line.HalphafloatnullableInd(NaI)[1.15/1.35]? Na I (8200 {AA} doublet) index from this workspect.indexfloatnullableEW(NaI)[3.74/6.16]? Na I (8200 {AA} doublet) equivalent width ({AA})0.1nmspect.line.eqWidthfloatnullableEW(KI)[1/5.99]? K I (7699 {AA}) equivalent width ({AA})0.1nmspect.line.eqWidthfloatnullableGravSpectroscopic indicator(s) suggesting that it may be a low gravity starmeta.codecharRV[-75.5/80.53]? Radial velocitykm/sphys.veloc;pos.heliocentricfloatnullablee_RV[0.05/3]? Uncertainty in RVkm/sstat.errorfloatnullableRef[1/6]? Reference (3)meta.ref;pos.frameintnullableJ/AJ/154/151/table7Comparison of Trigonometric, Photometric, and Spectroscopic DistancesNameSystem namemeta.id;pos.framecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDist1[13.5/36] Trigonometric distancepcpos.distance;pos.heliocentricfloate_Dist1[0.2/3] Uncertainty in Dist1pcstat.errorfloatDist2[6.2/20]? Photometric distancepcpos.distance;pos.heliocentricfloatnullablee_Dist2[0.5/5]? Uncertainty in Dist2pcstat.errorfloatnullableRef[1/10]? Reference (1)meta.ref;pos.frameintnullableDist3[7/20]? Spectroscopic distancepcpos.distance;pos.heliocentricfloatnullablee_Dist3[0.9/4]? Uncertainty in Dist3pcstat.errorfloatnullabler_Dist3[2/9]? Reference for Dist3 (1)meta.ref;pos.frameintnullableVar[V] Variable? (2)meta.code;src.varcharNoteNotemeta.notecharJ/AJ/154/151/table8Evaluation of Wide Common Proper Motion PairsRel[Yes No] Physically related?meta.codecharSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSystem namemeta.id;pos.framecharRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainAplx[15.34/73.22] Absolute trigonometric parallax {pi}(abs)maspos.parallax.trigfloate_Aplx[1.69/3.61] Uncertainty in Aplxmasstat.errorfloatpm[185.9/296.2] Proper motionmas/yrpos.pmfloate_pm[0.8/3.5] Uncertainty in pmmas/yrstat.errorfloatPA[122.9/269.1] Position angledegpos.posAngfloate_PA[0.33/1.76] Uncertainty in PAdegstat.errorfloatRef1[1/3] Reference (1)meta.ref;pos.frameintVmag[10.03/14.44] CTIO V band magnitudemagphot.mag;em.opt.Vfloatr_Vmag[1/6] Reference for Vmag (1)meta.ref;pos.frameintKsmag[6.932/8.64] 2MASS K_S_ band magnitudemagphot.mag;em.IR.KfloatMass[0.18/0.8] Mass (2)solMassphys.massfloate_Mass[0.04/0.2] Uncertainty in MasssolMassstat.error;phys.massfloatSpTypeMK spectral typesrc.spTypecharRef2[1/7] Reference (1)meta.ref;pos.frameintJ/AJ/154/151/table9Observations of Resolved Binaries with Separations <1"recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSystem namemeta.id;pos.framecharSep[0.076/0.828] Separationarcsecpos.angDistancefloate_Sep[0.001/0.04]? Uncertainty in Separcsecstat.errorfloatnullablePA[44.1/354.7] Position angledegpos.posAngfloate_PA[0.1/1.4]? Uncertainty in PAdegstat.errorfloatnullableDateDate of observationtime.epochnullableRef[1/9] Reference (1)meta.ref;pos.frameint