J/MNRAS/488/3024ivo://CDS.VizieR/J/MNRAS/488/3024doi:10.26093/cds/vizier.74883024CDSBustos Fierro I.H.Calderon J.H.2024-08-20T20:12:09Z2019-08-12T08:29:38ZCDS support team

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

cds-question@unistra.frglobular-star-clustersstellar-populationsIn this work, we present a method to identify possible members of globular clusters using data from Gaia DR2. The method consists of two stages: the first one based on a clustering algorithm, and the second one based on the analysis of the projected spatial distribution of stars with different proper motions. In order to confirm that the clusters members extracted by the method correspond to actual globular clusters, the spatial distribution, the vector point diagram of the proper motions, and the colour-magnitude diagrams are analysed. We apply the developed method to eight clusters: NGC 1261, NGC 3201, NGC 6139, NGC 6205, NGC 6362, NGC 6397, NGC 6712, and Palomar 13; we show the number of members extracted, the mean proper motions derived from them and finally we compare our results with other authors. In order to analyse the efficiency of the extraction method, we perform an estimation of the completeness and the degree of contamination of the extracted members.2019MNRAS.488.3024Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/488/3024CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/488/3024https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/488/3024http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/488/3024https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/488/3024https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/488/3024http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/488/3024GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/488/3024/table4 (Membership status of analysed Gaia DR2 sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/488/3024/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/488/3024/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/488/3024/table4?GETtext/xml+votable180.050000true47.9399306529-55.542755956320.0055555555555555565/9616 10518-10519 6/9430-9431 9433 9435-9438 19978-19979 20000-20001 29867 29870 33634-33635 33640-33641 38122-38123 38126 38468 38470 41304-41305 42067 42070-42071 42755 427611.9867573869263685e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/488/3024?format=asciidefaultJ/MNRAS/488/3024/table4Membership status of analysed Gaia DR2 sourcesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldCluster name (1)meta.id.parentcharSourceGaia DR2 source identifiermeta.id;meta.mainRA_ICRSGaia DR2 right ascension (ICRS)degpos.eq.ra;meta.mainindexedDE_ICRSGaia DR2 declination (ICRS)degpos.eq.dec;meta.mainindexedpmRA*? Gaia DR2 proper motion in right ascension direction (pmRA*cosDE)mas/yrpos.pm;pos.eq.radoublenullablepmDE? Gaia DR2 proper motion in declination directionmas/yrpos.pm;pos.eq.decdoublenullableGmagGaia DR2 G-band mean magnitudemagphot.mag;em.optfloatStatusMembership status (2)meta.code.memberchar