J/A+A/642/A179ivo://CDS.VizieR/J/A+A/642/A179doi:10.26093/cds/vizier.36420179CDSMiret-Roig N.Galli P.A.B.Brandner W.Bouy H.Barrado D.Olivares J.,Antoja T.Romero-Gomez M.Figueras F.Lillo-Box J.2021-09-08T12:25:05Z2020-10-19T09:08:40ZCDS support team

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

cds-question@unistra.fropen-star-clustersradial-velocityThe {beta} Pictoris moving group is one of the most well-known young associations in the solar neighbourhood and several members are known to host circumstellar discs, planets, and comets. Measuring its age with precision is basic to study several astrophysical processes such as planet formation and disc evolution which are strongly age dependent. We aim to determine a precise and accurate dynamical traceback age for the {beta} Pictoris moving group. Our sample combines the extremely precise Gaia DR2 astrometry with ground-based radial velocities measured in an homogeneous manner. We use an updated version of our algorithm to determine dynamical ages. The new approach takes into account a robust estimate of the spatial and kinematic covariance matrices of the association to improve the sample selection process and to perform the traceback analysis. We estimate a dynamical age of 18.5_-2.4_^+2.0^Myr for the {beta} Pictoris moving group. We investigated the spatial substructure of the association at birth time and we propose the existence of a core of stars more concentrated. We also provide precise radial velocity measurements for 81 members of {beta} Pic, including ten stars with the first determination of their radial velocities. Our dynamical traceback age is three times more precise than previous traceback age estimates and, more important, for the first time, reconciles the traceback age with the most recent estimates of other dynamical, lithium depletion boundary, and isochronal ages. This has been possible thanks to the excellent astrometric and spectroscopic precisions, the homogeneity of our sample, and the detailed analysis of binaries and membership.2020A&A...642A.179Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/642/A179CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/583/A85 : Binaries in beta Pic moving group (Alonso-Floriano+, 2015)J/A+A/600/A83 : Photometry of beta Pic members (Messina+, 2017)J/AJ/140/119 : {beta}Pic and AB Dor moving groups members (Schlieder+, 2010)J/AJ/143/80 : R Low-mass stars of beta Pic & AB Dor groups (Schlieder+, 2012)J/AJ/143/134 : Candidate members of {beta} Pic/AB Dor groups (McCarthy+, 2012)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/642/A179https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/642/A179http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/642/A179https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/642/A179https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/642/A179http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/642/A179GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/642/A179/tablec7 (Radial velocities measured in this study)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/642/A179/tablec7?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/642/A179/tablec7?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/642/A179/tablec7?GETtext/xml+votable180.050000true4.3480417-66.75344440.0055555555555555566/470 722 765 940 4468 13157 13536 13611 16455 16993 17607 18760 19144 19536 20074 20257 20602 21050 22773 22856 22964 23388 24110 28746 28778 33449 33850 34054 34145 36543 36948 37013 37419 38054 41295 41313 41538 41565 41798 42077 42095 42176 42242 42374 42563 45351 45475 45746 46922 47205 47233 47242 47249 47273 47287 47345 47561 47626 47674 47760 47808 47911 47941 47943 47993 48124 48263 48274 48318 48553 48648 48651https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/642/A179?format=asciidefaultJ/A+A/642/A179/tablec7Radial velocities measured in this studyNSp[1/76] Number of spectra analysedmeta.numberintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASS2MASS identifier (2MASS JHHMMSSss+DDMMSSs)meta.id;meta.maincharInstReference instrumentsmeta.id;instrcharallRV1Radial velocity epoch 1km/sphys.veloc;pos.heliocentricfloatallRV2? Radial velocity epoch 2km/sphys.veloc;pos.heliocentricfloatnullableallRV3? Radial velocity epoch 3km/sphys.veloc;pos.heliocentricfloatnullableallRV4? Radial velocity epoch 4km/sphys.veloc;pos.heliocentricfloatnullableallRV5? Radial velocity epoch 5km/sphys.veloc;pos.heliocentricfloatnullableallRV6? Radial velocity epoch 6km/sphys.veloc;pos.heliocentricfloatnullableallRV7? Radial velocity epoch 7km/sphys.veloc;pos.heliocentricfloatnullableallRV8? Radial velocity epoch 8km/sphys.veloc;pos.heliocentricfloatnullableallRV9? Radial velocity epoch 9km/sphys.veloc;pos.heliocentricfloatnullableallRV10? Radial velocity epoch 10km/sphys.veloc;pos.heliocentricfloatnullableallRV11? Radial velocity epoch 11km/sphys.veloc;pos.heliocentricfloatnullableallRV12? Radial velocity epoch 12km/sphys.veloc;pos.heliocentricfloatnullableallRV13? Radial velocity epoch 13km/sphys.veloc;pos.heliocentricfloatnullableallRV14? Radial velocity epoch 14km/sphys.veloc;pos.heliocentricfloatnullableallRV15? Radial velocity epoch 15km/sphys.veloc;pos.heliocentricfloatnullableallRV16? Radial velocity epoch 16km/sphys.veloc;pos.heliocentricfloatnullableallRV17? Radial velocity epoch 17km/sphys.veloc;pos.heliocentricfloatnullableallRV18? Radial velocity epoch 18km/sphys.veloc;pos.heliocentricfloatnullableallRV19? Radial velocity epoch 19km/sphys.veloc;pos.heliocentricfloatnullableallRV20? Radial velocity epoch 20km/sphys.veloc;pos.heliocentricfloatnullableallRV21? Radial velocity epoch 21km/sphys.veloc;pos.heliocentricfloatnullableallRV22? Radial velocity epoch 22km/sphys.veloc;pos.heliocentricfloatnullableallRV23? Radial velocity epoch 23km/sphys.veloc;pos.heliocentricfloatnullableallRV24? Radial velocity epoch 24km/sphys.veloc;pos.heliocentricfloatnullableallRV25? Radial velocity epoch 25km/sphys.veloc;pos.heliocentricfloatnullableallRV26? Radial velocity epoch 26km/sphys.veloc;pos.heliocentricfloatnullableallRV27? Radial velocity epoch 27km/sphys.veloc;pos.heliocentricfloatnullableallRV28? Radial velocity epoch 28km/sphys.veloc;pos.heliocentricfloatnullableallRV29? Radial velocity epoch 29km/sphys.veloc;pos.heliocentricfloatnullableallRV30? Radial velocity epoch 30km/sphys.veloc;pos.heliocentricfloatnullableallRV31? Radial velocity epoch 31km/sphys.veloc;pos.heliocentricfloatnullableallRV32? Radial velocity epoch 32km/sphys.veloc;pos.heliocentricfloatnullableallRV33? Radial velocity epoch 33km/sphys.veloc;pos.heliocentricfloatnullableallRV34? Radial velocity epoch 34km/sphys.veloc;pos.heliocentricfloatnullableallRV35? Radial velocity epoch 35km/sphys.veloc;pos.heliocentricfloatnullableallRV36? Radial velocity epoch 36km/sphys.veloc;pos.heliocentricfloatnullableallRV37? Radial velocity epoch 37km/sphys.veloc;pos.heliocentricfloatnullableallRV38? Radial velocity epoch 38km/sphys.veloc;pos.heliocentricfloatnullableallRV39? Radial velocity epoch 39km/sphys.veloc;pos.heliocentricfloatnullableallRV40? Radial velocity epoch 40km/sphys.veloc;pos.heliocentricfloatnullableallRV41? Radial velocity epoch 41km/sphys.veloc;pos.heliocentricfloatnullableallRV42? Radial velocity epoch 42km/sphys.veloc;pos.heliocentricfloatnullableallRV43? Radial velocity epoch 43km/sphys.veloc;pos.heliocentricfloatnullableallRV44? Radial velocity epoch 44km/sphys.veloc;pos.heliocentricfloatnullableallRV45? Radial velocity epoch 45km/sphys.veloc;pos.heliocentricfloatnullableallRV46? Radial velocity epoch 46km/sphys.veloc;pos.heliocentricfloatnullableallRV47? Radial velocity epoch 47km/sphys.veloc;pos.heliocentricfloatnullableallRV48? Radial velocity epoch 48km/sphys.veloc;pos.heliocentricfloatnullableallRV49? Radial velocity epoch 49km/sphys.veloc;pos.heliocentricfloatnullableallRV50? Radial velocity epoch 50km/sphys.veloc;pos.heliocentricfloatnullableallRV51? Radial velocity epoch 51km/sphys.veloc;pos.heliocentricfloatnullableallRV52? Radial velocity epoch 52km/sphys.veloc;pos.heliocentricfloatnullableallRV53? Radial velocity epoch 53km/sphys.veloc;pos.heliocentricfloatnullableallRV54? Radial velocity epoch 54km/sphys.veloc;pos.heliocentricfloatnullableallRV55? Radial velocity epoch 55km/sphys.veloc;pos.heliocentricfloatnullableallRV56? Radial velocity epoch 56km/sphys.veloc;pos.heliocentricfloatnullableallRV57? Radial velocity epoch 57km/sphys.veloc;pos.heliocentricfloatnullableallRV58? Radial velocity epoch 58km/sphys.veloc;pos.heliocentricfloatnullableallRV59? Radial velocity epoch 59km/sphys.veloc;pos.heliocentricfloatnullableallRV60? Radial velocity epoch 60km/sphys.veloc;pos.heliocentricfloatnullableallRV61? Radial velocity epoch 61km/sphys.veloc;pos.heliocentricfloatnullableallRV62? Radial velocity epoch 62km/sphys.veloc;pos.heliocentricfloatnullableallRV63? Radial velocity epoch 63km/sphys.veloc;pos.heliocentricfloatnullableallRV64? Radial velocity epoch 64km/sphys.veloc;pos.heliocentricfloatnullableallRV65? Radial velocity epoch 65km/sphys.veloc;pos.heliocentricfloatnullableallRV66? Radial velocity epoch 66km/sphys.veloc;pos.heliocentricfloatnullableallRV67? Radial velocity epoch 67km/sphys.veloc;pos.heliocentricfloatnullableallRV68? Radial velocity epoch 68km/sphys.veloc;pos.heliocentricfloatnullableallRV69? Radial velocity epoch 69km/sphys.veloc;pos.heliocentricfloatnullableallRV70? Radial velocity epoch 70km/sphys.veloc;pos.heliocentricfloatnullableallRV71? Radial velocity epoch 71km/sphys.veloc;pos.heliocentricfloatnullableallRV72? Radial velocity epoch 72km/sphys.veloc;pos.heliocentricfloatnullablee_allRV1Error in radial velocity epoch 1km/sstat.errorfloate_allRV2? Error in radial velocity epoch 2km/sstat.errorfloatnullablee_allRV3? Error in radial velocity epoch 3km/sstat.errorfloatnullablee_allRV4? Error in radial velocity epoch 4km/sstat.errorfloatnullablee_allRV5? Error in radial velocity epoch 5km/sstat.errorfloatnullablee_allRV6? Error in radial velocity epoch 6km/sstat.errorfloatnullablee_allRV7? Error in radial velocity epoch 7km/sstat.errorfloatnullablee_allRV8? Error in radial velocity epoch 8km/sstat.errorfloatnullablee_allRV9? Error in radial velocity epoch 9km/sstat.errorfloatnullablee_allRV10? Error in radial velocity epoch 10km/sstat.errorfloatnullablee_allRV11? Error in radial velocity epoch 11km/sstat.errorfloatnullablee_allRV12? Error in radial velocity epoch 12km/sstat.errorfloatnullablee_allRV13? Error in radial velocity epoch 13km/sstat.errorfloatnullablee_allRV14? Error in radial velocity epoch 14km/sstat.errorfloatnullablee_allRV15? Error in radial velocity epoch 15km/sstat.errorfloatnullablee_allRV16? Error in radial velocity epoch 16km/sstat.errorfloatnullablee_allRV17? Error in radial velocity epoch 17km/sstat.errorfloatnullablee_allRV18? Error in radial velocity epoch 18km/sstat.errorfloatnullablee_allRV19? Error in radial velocity epoch 19km/sstat.errorfloatnullablee_allRV20? Error in radial velocity epoch 20km/sstat.errorfloatnullablee_allRV21? Error in radial velocity epoch 21km/sstat.errorfloatnullablee_allRV22? Error in radial velocity epoch 22km/sstat.errorfloatnullablee_allRV23? Error in radial velocity epoch 23km/sstat.errorfloatnullablee_allRV24? Error in radial velocity epoch 24km/sstat.errorfloatnullablee_allRV25? Error in radial velocity epoch 25km/sstat.errorfloatnullablee_allRV26? Error in radial velocity epoch 26km/sstat.errorfloatnullablee_allRV27? Error in radial velocity epoch 27km/sstat.errorfloatnullablee_allRV28? Error in radial velocity epoch 28km/sstat.errorfloatnullablee_allRV29? Error in radial velocity epoch 29km/sstat.errorfloatnullablee_allRV30? Error in radial velocity epoch 30km/sstat.errorfloatnullablee_allRV31? Error in radial velocity epoch 31km/sstat.errorfloatnullablee_allRV32? Error in radial velocity epoch 32km/sstat.errorfloatnullablee_allRV33? Error in radial velocity epoch 33km/sstat.errorfloatnullablee_allRV34? Error in radial velocity epoch 34km/sstat.errorfloatnullablee_allRV35? Error in radial velocity epoch 35km/sstat.errorfloatnullablee_allRV36? Error in radial velocity epoch 36km/sstat.errorfloatnullablee_allRV37? Error in radial velocity epoch 37km/sstat.errorfloatnullablee_allRV38? Error in radial velocity epoch 38km/sstat.errorfloatnullablee_allRV39? Error in radial velocity epoch 39km/sstat.errorfloatnullablee_allRV40? Error in radial velocity epoch 40km/sstat.errorfloatnullablee_allRV41? Error in radial velocity epoch 41km/sstat.errorfloatnullablee_allRV42? Error in radial velocity epoch 42km/sstat.errorfloatnullablee_allRV43? Error in radial velocity epoch 43km/sstat.errorfloatnullablee_allRV44? Error in radial velocity epoch 44km/sstat.errorfloatnullablee_allRV45? Error in radial velocity epoch 45km/sstat.errorfloatnullablee_allRV46? Error in radial velocity epoch 46km/sstat.errorfloatnullablee_allRV47? Error in radial velocity epoch 47km/sstat.errorfloatnullablee_allRV48? Error in radial velocity epoch 48km/sstat.errorfloatnullablee_allRV49? Error in radial velocity epoch 49km/sstat.errorfloatnullablee_allRV50? Error in radial velocity epoch 50km/sstat.errorfloatnullablee_allRV51? Error in radial velocity epoch 51km/sstat.errorfloatnullablee_allRV52? Error in radial velocity epoch 52km/sstat.errorfloatnullablee_allRV53? Error in radial velocity epoch 53km/sstat.errorfloatnullablee_allRV54? Error in radial velocity epoch 54km/sstat.errorfloatnullablee_allRV55? Error in radial velocity epoch 55km/sstat.errorfloatnullablee_allRV56? Error in radial velocity epoch 56km/sstat.errorfloatnullablee_allRV57? Error in radial velocity epoch 57km/sstat.errorfloatnullablee_allRV58? Error in radial velocity epoch 58km/sstat.errorfloatnullablee_allRV59? Error in radial velocity epoch 59km/sstat.errorfloatnullablee_allRV60? Error in radial velocity epoch 60km/sstat.errorfloatnullablee_allRV61? Error in radial velocity epoch 61km/sstat.errorfloatnullablee_allRV62? Error in radial velocity epoch 62km/sstat.errorfloatnullablee_allRV63? Error in radial velocity epoch 63km/sstat.errorfloatnullablee_allRV64? Error in radial velocity epoch 64km/sstat.errorfloatnullablee_allRV65? Error in radial velocity epoch 65km/sstat.errorfloatnullablee_allRV66? Error in radial velocity epoch 66km/sstat.errorfloatnullablee_allRV67? Error in radial velocity epoch 67km/sstat.errorfloatnullablee_allRV68? Error in radial velocity epoch 68km/sstat.errorfloatnullablee_allRV69? Error in radial velocity epoch 69km/sstat.errorfloatnullablee_allRV70? Error in radial velocity epoch 70km/sstat.errorfloatnullablee_allRV71? Error in radial velocity epoch 71km/sstat.errorfloatnullablee_allRV72? Error in radial velocity epoch 72km/sstat.errorfloatnullableJD1Julian day in epoch 1dtime.epochdoubleJD2? Julian day in epoch 2dtime.epochdoublenullableJD3? Julian day in epoch 3dtime.epochdoublenullableJD4? Julian day in epoch 4dtime.epochdoublenullableJD5? Julian day in epoch 5dtime.epochdoublenullableJD6? Julian day in epoch 6dtime.epochdoublenullableJD7? Julian day in epoch 7dtime.epochdoublenullableJD8? Julian day in epoch 8dtime.epochdoublenullableJD9? Julian day in epoch 9dtime.epochdoublenullableJD10? Julian day in epoch 10dtime.epochdoublenullableJD11? Julian day in epoch 11dtime.epochdoublenullableJD12? Julian day in epoch 12dtime.epochdoublenullableJD13? Julian day in epoch 13dtime.epochdoublenullableJD14? Julian day in epoch 14dtime.epochdoublenullableJD15? Julian day in epoch 15dtime.epochdoublenullableJD16? Julian day in epoch 16dtime.epochdoublenullableJD17? Julian day in epoch 17dtime.epochdoublenullableJD18? Julian day in epoch 18dtime.epochdoublenullableJD19? Julian day in epoch 19dtime.epochdoublenullableJD20? Julian day in epoch 20dtime.epochdoublenullableJD21? Julian day in epoch 21dtime.epochdoublenullableJD22? Julian day in epoch 22dtime.epochdoublenullableJD23? Julian day in epoch 23dtime.epochdoublenullableJD24? Julian day in epoch 24dtime.epochdoublenullableJD25? Julian day in epoch 25dtime.epochdoublenullableJD26? Julian day in epoch 26dtime.epochdoublenullableJD27? Julian day in epoch 27dtime.epochdoublenullableJD28? Julian day in epoch 28dtime.epochdoublenullableJD29? Julian day in epoch 29dtime.epochdoublenullableJD30? Julian day in epoch 30dtime.epochdoublenullableJD31? Julian day in epoch 31dtime.epochdoublenullableJD32? Julian day in epoch 32dtime.epochdoublenullableJD33? Julian day in epoch 33dtime.epochdoublenullableJD34? Julian day in epoch 34dtime.epochdoublenullableJD35? Julian day in epoch 35dtime.epochdoublenullableJD36? Julian day in epoch 36dtime.epochdoublenullableJD37? Julian day in epoch 37dtime.epochdoublenullableJD38? Julian day in epoch 38dtime.epochdoublenullableJD39? Julian day in epoch 39dtime.epochdoublenullableJD40? Julian day in epoch 40dtime.epochdoublenullableJD41? Julian day in epoch 41dtime.epochdoublenullableJD42? Julian day in epoch 42dtime.epochdoublenullableJD43? Julian day in epoch 43dtime.epochdoublenullableJD44? Julian day in epoch 44dtime.epochdoublenullableJD45? Julian day in epoch 45dtime.epochdoublenullableJD46? Julian day in epoch 46dtime.epochdoublenullableJD47? Julian day in epoch 47dtime.epochdoublenullableJD48? Julian day in epoch 48dtime.epochdoublenullableJD49? Julian day in epoch 49dtime.epochdoublenullableJD50? Julian day in epoch 50dtime.epochdoublenullableJD51? Julian day in epoch 51dtime.epochdoublenullableJD52? Julian day in epoch 52dtime.epochdoublenullableJD53? Julian day in epoch 53dtime.epochdoublenullableJD54? Julian day in epoch 54dtime.epochdoublenullableJD55? Julian day in epoch 55dtime.epochdoublenullableJD56? Julian day in epoch 56dtime.epochdoublenullableJD57? Julian day in epoch 57dtime.epochdoublenullableJD58? Julian day in epoch 58dtime.epochdoublenullableJD59? Julian day in epoch 59dtime.epochdoublenullableJD60? Julian day in epoch 60dtime.epochdoublenullableJD61? Julian day in epoch 61dtime.epochdoublenullableJD62? Julian day in epoch 62dtime.epochdoublenullableJD63? Julian day in epoch 63dtime.epochdoublenullableJD64? Julian day in epoch 64dtime.epochdoublenullableJD65? Julian day in epoch 65dtime.epochdoublenullableJD66? Julian day in epoch 66dtime.epochdoublenullableJD67? Julian day in epoch 67dtime.epochdoublenullableJD68? Julian day in epoch 68dtime.epochdoublenullableJD69? Julian day in epoch 69dtime.epochdoublenullableJD70? Julian day in epoch 70dtime.epochdoublenullableJD71? Julian day in epoch 71dtime.epochdoublenullableJD72? Julian day in epoch 72dtime.epochdoublenullableRVfinalFinal radial velocitykm/sphys.veloc;pos.heliocentricfloate_RVfinalError in final radial velocitykm/sstat.errorfloatBinflag[Y/N] Binary flag (from literature)meta.codecharTW[*] * indicates binaries identified in this workmeta.codecharContflag[Y/N] Kinematic contaminant flagmeta.codecharSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPosition from 2MASS name (right ascension part)degpos.eq.ra;meta.main_DEPosition from 2MASS name (declination part)degpos.eq.dec;meta.main