J/A+A/675/A67ivo://CDS.VizieR/J/A+A/675/A67doi:10.26093/cds/vizier.36750067CDSQin M.Zhang Y.Liu J.Song F.Hu Q.Wang H.Ma S.Lu G.2024-11-28T20:04:23Z2023-07-03T09:47:37ZCDS support team

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

cds-question@unistra.fropen-star-clustersvisible-astronomytrigonometric-parallaxproper-motionsradial-velocityphotometryIn the Gaia era, the precision of astrometric data is unprecedented. High-quality data make it easier to find more cluster aggregates and support further confirmation of these open clusters. We use Gaia DR3 to redetermine the open clusters surrounding Pismis 5 in the Vela Molecular Ridge. We also investigate the basic properties of these clusters. We apply two clustering algorithms (StarGO and pyUPMASK) to identify the open cluster members in a five-dimensional space with {alpha}, {deta}, {varpi}, {mu}_{alpha}_cos{delta} and {mu}_{delta}_. We identify eight open clusters surrounding Pismis 5 in the Vela Molecular Ridge. The open cluster QZ1 is newly discovered. Through investigating the comprehensive properties of the clusters, one open binary cluster candidate (Alessi 43 and Collinder 197) and one triple open cluster candidate (Pismis 5, Pismis 5A, and Pismis 5B) are discussed. Binary and triple open cluster candidates have been identified as potential primordial aggregates based on their similar age, position, and motion. According to kinematic speculations, the two aggregate candidates will gradually separate, and their interiors will slowly disintegrate.2023A&A...675A..67Qhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/675/A67CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/675/A67https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/675/A67http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/675/A67https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/675/A67https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/675/A67http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/675/A67GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/675/A67/vmr (The member candidates of eight open cluster)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/675/A67/vmr?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/675/A67/vmr?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/675/A67/vmr?GETtext/xml+votable180.050000true129.5373865-40.081071390.0055555555555555565/9471 9820 9843 6/37881 37883 39251-39252 39254 39257-39260 39271 39277-39279 39284 39286 39288-39290 39366-39367 39369 39371 39393 39396https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/675/A67?format=asciiOpticaldefaultJ/A+A/675/A67/vmrThe member candidates of eight open cluster_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.raindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.decindexedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClusterCluster name (1)meta.id.parentcharGaiaDR3Gaia DR3 source IDmeta.id;meta.mainRA_ICRSRight ascension (ICRS) at Ep=2016degpos.eq.ra;meta.maine_RA_ICRSStandard error of the right ascensiondegreestat.error;pos.eq.radoubleDE_ICRSDeclination (ICRS) at Ep=2016degpos.eq.dec;meta.maine_DE_ICRSStandard error of the declinationdegreestat.error;pos.eq.decdoublePlxAbsolute stellar parallaxmaspos.parallaxdoublee_PlxStandard error on parallaxmasstat.error;pos.parallaxdoublepmRAProper motion in right ascension directionmas/yrpos.pm;pos.eq.radoublee_pmRAStandard error of pmramas/yrstat.error;pos.pm;pos.eq.radoublepmDEProper motion in declinationmas/yrpos.pm;pos.eq.decdoublee_pmDEStandard error of pmDEmas/yrstat.error;pos.pm;pos.eq.decdoubleGmagG-band mean magnitudemagphot.mag;em.optdoubleBP-RPBP-RP colour indexmagphot.color;em.opt.B;em.opt.VdoubleRV? Radial_velocitykm/sphys.veloc;pos.heliocentricdoublenullablee_RV? Standard error of radial_velocitykm/sstat.errordoublenullableGLONMean Galactic longitude of membersdegpos.galactic.lonGLATMean Galactic latitude of membersdegpos.galactic.latdoubleXX coordinate in Galactocentric coordinatespcpos.cartesian.x;pos.galactocentricdoubleYY coordinate in Galactocentric coordinatespcpos.cartesian.y;pos.galactocentricdoubleZZ coordinate in Galactocentric coordinatespcpos.cartesian.z;pos.galactocentricdoublePmemb[0/1] Membership probabilitystat.probabilityfloat