J/A+A/243/386ivo://CDS.VizieR/J/A+A/243/386doi:10.26093/cds/vizier.32430386CDSSchwan H.1998-08-28T09:57:38Z1998-08-28T09:56:25ZCDS support team

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

cds-question@unistra.frproper-motionsstellar-distanceopen-star-clustersDistances for 145 Hyades members in an extended region of the Hyades cluster were derived on the basis of new, highly accurate proper motions obtained from work on the catalogues FK5 and PPM. The cluster membership on the stars has been discussed and a few new candidates are proposed. From a selected subset of our sample we have obtained the convergence point {alpha}=6h30.7m+/-1.7m=97deg41'+/-25', {delta}=5deg59'+/-11'. Combining this point with the mean cluster radial velocity of 39.1km/s by Detweiler et al. (1984AJ.....89.1038D) one find the galactic space velocity (U, V, W)=(-42.02, -20.12, -1.04)km/s. The galactic coordinates of the centre of our sample are (X, Y, Z)=(-44.3, +0.5, -18.2)pc. The distance of this centre from the Sun is 47.9+/-0.8pc corresponding to a modulus m-M=3.40+/-0.04mag. Individual distance moduli, coordinates and velocity residuals per star are given. The Hyades main sequence has been constructed in the range B-V<1.2mag and it is presented analytically as well as by tabular values. The dispersion {sigma}(M_v_)=0.14mag of the absolute magnitudes about the main sequence indicates its high internal accuracy.1991A&A...243..386Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/243/386CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/80/379 : Hyades cluster (Hanson+, 1975)J/MNRAS/257/257 : Proper motions in the Hyades (Reid 1992)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/243/386https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/243/386http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/243/386https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/243/386https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/243/386http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/243/386GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/243/386/table1 (Basic data)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/243/386/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/243/386/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/243/386/table1?GETtext/xml+votable180.050000true64.948215.63610.005555555555555556https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/243/386?format=asciiOpticaldefaultJ/A+A/243/386/table1Basic dataBDBD numbermeta.idcharr_B-V[M+] B-V references (5)meta.refcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMember[1/4] Membership flag (1)meta.code.memberintSeqSequential numbermeta.idintNoStar number in the catalogue (2)meta.id;meta.mainintprimaryvBvan Bueren (1952BAN....11..385V) number (3)meta.idcharHD? HD number (cat. <III/135>)meta.idintnullableRAB1950Right ascension (B1950)pos.eq.ra;meta.mainDEB1950Declination signpos.eq.dec;meta.mainpmRAProper motion in right ascension0.0001arcsec.yr**-1pos.pm;pos.eq.rainte_pmRArms uncertainty on pmRA0.0001arcsec.yr**-1stat.errorintpmDEProper motion in declination0.0001arcsec.yr**-1pos.pm;pos.eq.decinte_pmDErms uncertainty on pmDE0.0001arcsec.yr**-1stat.errorintRV? Radial velocitykm/sphys.veloc;pos.heliocentricfloatnullabler_RV[GW] References for radial velocity (4)meta.refcharVmagV magnitudemagphot.mag;em.opt.VfloatB-VB-V colour indexmagphot.color;em.opt.B;em.opt.VfloatMvAbsolute V magnitudemagphys.magAbs;em.optfloatw_Mv? Weight for those stars which were used in the determination of the convergence point.stat.weightintnullableJ/A+A/243/386/table2Essential data used as membership criterionrDistancepcpos.distancefloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMember[1/4] Membership flag (1)meta.code.memberintNoStar number in the catalogue as in table1meta.id;meta.mainintprimarym-MDistance modulusmagphot.mag.distModfloatX-XcResidual X coordinate (2)pcpos.distancefloatn_X-Xc[*] *: discordant valuemeta.notecharY-YcResidual Y coordinate (2)pcpos.distancefloatn_Y-Yc[*] *: discordant valuemeta.notecharZ-ZcResidual Z coordinate (2)pcpos.distancefloatn_Z-Zc[*] *: discordant valuemeta.notecharU-UcResidual U velocity (2)km/sstat.fit.residual;phys.velocfloatV-VcResidual V velocity (2)km/sstat.fit.residual;phys.velocfloatW-WcResidual W velocity (2)km/sstat.fit.residual;phys.velocfloatd-TetaAngle between the star's proper motion and the direction of the convergence pointdegpos.posAng;pos.pmfloatn_d-Teta[*] *: discordant valuemeta.notecharMy-TauVelocity component perpendicular to the direction to the convergence point in angular measure0.01arcsec/yrpos.pmfloate_My-Taurms uncertainty on My-Tau0.01arcsec/yrstat.errorfloatV-TauVelocity component perpendicular to the direction to the convergence point in linear measurekm/sphys.velocfloate_V-Taurms uncertainty on V-Taukm/sstat.errorfloatd-Vr? Difference between the observed and expected radial velocitykm/sstat.fit.omc;phys.velocfloatnullablen_d-Vr[*] *: discordant valuemeta.notechard-MvDifference between the observed and expected magnitudemagphot.mag;arith.difffloatn_d-Mv[*] *: discordant valuemeta.notechar