J/MNRAS/484/2832ivo://CDS.VizieR/J/MNRAS/484/2832doi:10.26093/cds/vizier.74842832CDSVasiliev E.2024-08-19T20:16:35Z2019-02-11T14:17:07ZCDS support team

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

cds-question@unistra.frmilky-way-galaxyglobular-star-clustersproper-motionsradial-velocityWe use Gaia Data Release 2 to determine the mean proper motions for 150 Milky Way globular clusters (almost the entire known population), with a typical uncertainty of 0.05mas/yr limited mainly by systematic errors. Combining them with distance and line-of-sight velocity measurements from the literature, we analyse the distribution of globular clusters in the 6D phase space, using both position/velocity and action/angle coordinates. The population of clusters in the central 10kpc has a mean rotational velocity reaching 50-80km/s, and a nearly isotropic velocity dispersion 100-120km/s, while in the outer galaxy, the cluster orbits are strongly radially anisotropic. We confirm a concentration of clusters at high radial action in the outer region of the Galaxy. Finally, we explore a range of equilibrium distribution function-based models for the entire globular cluster system, and the information they provide about the potential of the Milky Way. The dynamics of clusters is best described by models with the circular velocity between 10 and 50kpc staying in the range 210-240km/s.2019MNRAS.484.2832Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/484/2832CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)J/A+A/616/A12 : Gaia DR2 sources in GC and dSph (Gaia Collaboration+, 2018)J/MNRAS/482/5138 : Galactic GC proper motions & velocities (Baumgardt+, 2019)J/MNRAS/505/5978 : Gaia EDR3 view on Galactic globular clustershttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/484/2832https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/484/2832http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/484/2832https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/484/2832https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/484/2832http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/484/2832GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/484/2832/catalog (The catalogue of cluster proper motions (table C1). See update with Gaia EDR3 in J/MNRAS/505/5978)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/484/2832/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/484/2832/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/484/2832/catalog?GETtext/xml+votable180.050000true6.024-72.0810.0055555555555555566/1133 3950 6389 9436 9666 10008 10321 10336 12405 12425 12531 12943 14489 16647 17121 17711 19091 20001 21017 24843 25486 25873 27237 27981 27986 28067 28577 28705 28717 28741 28751 28768-28769 28778 28781 28805 28815 28817 28833 28835 28838 28855 28867-28868 28876-28877 28882 28889 28895 28905 28959 28962 28970 28973-28974 29077 29184 29187 29195 29202 29216 29222 29231 29233 29248 29267 29289 29294 29318 29377 29626 29632 29636-29637 29816 29870 30321 30323 30378 30769 30998 31019 31043 31095 31115 31128 31398 31417 31723 32083 33321 33330 33635 34242 34317 34811 36971 37294 38465 39642 39954 41011 41257 41304 41507 41522 41847 41852 42076 42152-42153 42204 42278 42314 42320 42361 42466 42528 42700 42761 42789 42841 42862 42955 42958 42990 43125 43193 43227 44086 44220 44427 47125 47620 47745 47777 47825 47866 47868 47903 47916 47935 47971 48035 48434 48444 48698 48952https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/484/2832?format=asciidefaultJ/MNRAS/484/2832/catalogThe catalogue of cluster proper motions (table C1). See update with Gaia EDR3 in J/MNRAS/505/5978SimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCommon name, NGC identifier, etc.meta.id;meta.maincharONameOther namemeta.idcharRAJ2000Right Ascension J2000degpos.eq.ra;meta.mainDEJ2000Declination J2000degpos.eq.dec;meta.mainDist? Distance to the cluster (from Harris, 2010arXiv1012.3224H)kpcpos.distancefloatnullableHRVLine-of-sight velocity (from Baumgardt et al., 2019, Cat. J/MNRAS/482/5138)km/sspect.dopplerVelocfloate_HRVUncertainty in line-of-sight velocitykm/sstat.errorfloatpmRAProper motion in right ascension, pmRA*cosDEmas/yrpos.pm;pos.eq.rafloatpmDEProper motion in declinationmas/yrpos.pm;pos.eq.decfloate_pmRAUncertainty (including systematic) in pmRAmas/yrstat.error;pos.pm;pos.eq.rafloate_pmDEUncertainty (including systematic) in pmDEmas/yrstat.error;pos.pm;pos.eq.decfloatcorrCorrelation coefficient between uncertaintiesstat.correlationfloatRscaleScale radius of Gaia-detected cluster membersarcminphys.angSizefloatNstarNumber of Gaia-detected cluster member starsmeta.numberint