J/A+A/638/A85ivo://CDS.VizieR/J/A+A/638/A85doi:10.26093/cds/vizier.36380085CDSRoccatagliata V.Franciosini E.SaccoG.G.Randich S.,Sicilia-Aguilar A.2022-06-23T07:51:23Z2020-06-18T06:52:40ZCDS support team

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

cds-question@unistra.frstellar-associationspre-main-sequence-starsvisible-astronomytrigonometric-parallaxproper-motionsradial-velocityTaurus represents an ideal region to study the three-dimensional distribution of the young stellar population and relate it to the associated molecular cloud. The second Gaia data release (DR2) enables us to investigate the Taurus complex in three dimensions, starting from a previously defined robust membership. The molecular cloud structured in filaments can be traced in emission using the public far-infrared maps from Herschel. From a compiled catalog of spectroscopically confirmed members, we analyze the 283 sources with reliable parallax and proper motions in the Gaia DR2 archive. We fit the distribution of parallaxes and proper motions with multiple populations described by multivariate Gaussians. We compute the cartesian Galactic coordinates (X,Y,Z) and, for the populations associated with the main cloud, also the galactic space velocity (U,V,W). We discuss the spatial distribution of the populations in relation to the structure of the filamentary molecular cloud traced by Herschel. We discover the presence of six populations which are all well defined in parallax and proper motions, with the only exception being Taurus D. The derived distances range between ~130 and ~160pc. We do not find a unique relation between stellar population and the associated molecular cloud: while the stellar population seems to be on the cloud surface, both lying at similar distances, this is not the case when the molecular cloud is structured in filaments. Taurus B is probably moving in the direction of Taurus A, while Taurus E appears to be moving towards them. The Taurus region is the result of a complex star formation history which most probably occurred in clumpy and filamentary structures that are evolving independently.2020A&A...638A..85Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/638/A85CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)I/345 : Gaia DR2 (Gaia Collaboration, 2018)J/AJ/158/54 : New Taurus members from stellar to planetary massesJ/AJ/156/271 : The stellar membership of the Taurus SFR (Luhman, 2018)J/A+A/630/A137 : Structure and kinematics of the Taurus region (Galli+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/638/A85https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/638/A85http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/638/A85https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/638/A85https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/638/A85http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/638/A85GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/638/A85/tablea1 (Membership results for 283 Taurus stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/638/A85/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/638/A85/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/638/A85/tablea1?GETtext/xml+votable180.050000true64.0786169427.870830.0055555555555555565/262 268-270 278 6/342-343 1029 1031 1033 1036-1037 1039-1040 1042-1043 1047 1052 1054 1061-1063 1066 1068-1069 1084 1086 1102 1104 1106 1108 1111 1119-1120 1124-1126 1133 1152 1154 1156-1157 1159 1161 1167-1170 1174 23518 23527 23542-23543 23548-23549 24194-24195 24201-24203 24224-24225 24233 24289 24294-24295 24300https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/638/A85?format=asciiOpticaldefaultJ/A+A/638/A85/tablea1Membership results for 283 Taurus starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASS2MASS Point Source Catalog name (JHHMMSSss+DDMMSSs)meta.idcharGaiaDR2Gaia DR2 identifiermeta.id;meta.mainNameOther source namemeta.idcharSpTypeSpectral type from Esplin & Luhman (2019, J/AJ/158/54)src.spTypecharRefEp[2015.5] Reference epoch from Gaia DR2yrmeta.ref;pos.framefloatRA_ICRSRight Ascension (ICRS) at Ep=2015.5 from Gaia DR2degpos.eq.ra;meta.maine_RA_ICRSError on Right Ascensiondegstat.error;pos.eq.radoubleDE_ICRSDeclination (ICRS) at Ep=2015.5 from Gaia DR2degpos.eq.dec;meta.mainSimbadSimbad column added by the CDSmeta.ref.urlchar_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.decnullableindexede_DE_ICRSError on Declinationdegstat.error;pos.eq.decdoublePlxParallax from Gaia DR2maspos.parallaxdoublee_PlxError in Plxmasstat.error;pos.parallaxdoublepmRA*Proper motion in RA, pmRA*cosDE from Gaia DR2mas/yrpos.pm;pos.eq.radoublee_pmRA*Error in pmRAmas/yrstat.error;pos.pm;pos.eq.radoublepmDEProper motion in DEC from Gaia DR2mas/yrpos.pm;pos.eq.decdoublee_pmDEError in pmDEmas/yrstat.error;pos.pm;pos.eq.decdoubleplxpmRAcorCorrelation between parallax and proper motion in RAstat.correlationdoubleplxpmDEcorCorrelation between parallax and proper motion in DECstat.correlationdoublepmRApmDEcorCorrelation between proper motions in RA and in DECstat.correlationdoubleGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latdoubleRUWERenormalized Unit Weight Factor from Gaia DR2stat.errorfloatpA[0/1] Probability of membership to Taurus Astat.fit.goodnessfloatpB[0/1] Probability of membership to Taurus Bstat.fit.goodnessfloatpC[0/1] Probability of membership to Taurus Cstat.fit.goodnessfloatpD[0/1] Probability of membership to Taurus Dstat.fit.goodnessfloatpE[0/1] Probability of membership to Taurus Estat.fit.goodnessfloatpF[0/1] Probability of membership to Taurus Fstat.fit.goodnessfloatRV? RV from Galli et al. (2019, J/A+A/630/A137)km/sphys.veloc;pos.heliocentricdoublenullablePopL18Population from Luhman (2018, J/AJ/156/271) (1)meta.codecharClustG19[0/21] Cluster number from Galli et al. (2019, J/A+A/630/A137)meta.idintMemG19[0/1] Membership status from Galli et al. (2019, J/A+A/630/A137)meta.code.memberintL18Display the Luhman (2018, J/AJ/156/271)meta.ref.urlcharG19Display the Galli et al. (2019, J/A+A/630/A137) datameta.ref.urlchar