J/MNRAS/489/3093ivo://CDS.VizieR/J/MNRAS/489/3093doi:10.26093/cds/vizier.74893093CDSShao Z.Li L.2024-08-20T20:12:52Z2020-02-26T06:35:52ZCDS support team

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

cds-question@unistra.frglobular-star-clustersvisible-astronomytrigonometric-parallaxWe have established a mixture model approach to derive the parallax of the MilkyWay globular clusters. It avoids the problem of cluster membership determination and provides a completely independent astrometrical solution by purely using the parallax data. This method is validated with simulated clusters of Pancino et al.. We have resolved 120 real globular clusters by the mixture model using parallaxes of the second data release of Gaia. They construct the largest direct parallax sample up to now. In comparison with other direct parallax results based on cluster members, including 75 clusters of Gaia Collaboration, our method presents its accuracy, especially for some particular clusters. A systematic offset of -27.6+/-1.7 uas, together with a scatter of 22.8+/-1.3 uas is found in comparison with other indirect parallax measurements. They are consistent with the global value and the variation of the zero-point of current Gaia parallaxes. Distances of several specific nearby globular clusters are discussed while the closest ones can reach high precisions, even taking the systematic error into account.2019MNRAS.489.3093Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/489/3093CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)J/A+A/543/A156 : Milky Way global survey of star clusters (Kharchenko+, 2012)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/489/3093https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/489/3093http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/489/3093https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/489/3093https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/489/3093http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/489/3093GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/489/3093/table1 (Fitting results of parallax of globular clusters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/489/3093/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/489/3093/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/489/3093/table1?GETtext/xml+votable180.050000true6.0223292-72.08144440.0055555555555555566/6389 9436 9666 10008 10321 10336 12405 12425 12531 12943 14489 16647 17121 19091 21017 24843 25873 27981 27986 28067 28705 28717 28741 28751 28768-28769 28778 28781 28882 28889 28959 28962 28970 28973-28974 29077 29184 29187 29195 29202 29216 29222 29231 29233 29248 29267 29289 29294 29318 29377 29632 29636-29637 29647 29816 29870 30321 30323 30378 30769 30998 31019 31043 31095 31115 31398 31417 33321 33330 33635 34242 36971 37211 37294 38465 39642 41011 41257 41304 41507 41522 41847 41852 42076 42152 42278 42314 42320 42361 42466 42700 42761 42789 42841 42862 42955 42958 42990 43125 43193 43227 44086 44220 44427 47125 47620 47777 47825 47866 47868 47903 47935 47971 48035 48434 48444 48698 48952https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/489/3093?format=asciiOpticaldefaultJ/MNRAS/489/3093/table1Fitting results of parallax of globular clustersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDCluster IDmeta.id;meta.maincharNameCluster namemeta.idcharRangeSelection of the fitting radius of a cluster (1)meta.notecharRadFitting radius in arcminarcminphys.angSizefloatNsNumber of fitting starsmeta.numberintPlxCParallax of the GC (2)uarcsecpos.parallax.trigfloate_PlxCFitting uncertainties of Parallax of the GC (3)uarcsecstat.errorfloatSimbadNameSimbad column added by the CDSmeta.idchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main