J/MNRAS/503/1864ivo://CDS.VizieR/J/MNRAS/503/1864doi:10.26093/cds/vizier.75031864CDSPena Ramirez K.Gonzalez-fernandez C.Chene A.-N.Ramirez Alegria S.2024-11-06T20:33:16Z2024-03-04T15:48:11ZCDS support team

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

cds-question@unistra.fropen-star-clustersmilky-way-galaxyproper-motionsinfrared-photometryvisible-astronomyOpen clusters are central elements of our understanding of the Galactic disc evolution, as an accurate determination of their parameters leads to an unbiased picture of our Galaxy's structure. Extending the analysis towards fainter magnitudes in cluster sequences has a significant impact on the derived fundamental parameters, such as extinction and total mass. We perform a homogeneous analysis of six open stellar clusters in the Galactic disc using kinematic and photometric information from the Gaia DR2 and VVV surveys: NGC 6067, NGC 6259, NGC 4815, Pismis 18, Trumpler 23, and Trumpler 20. We implement two coarse-to-fine characterization methods: first, we employ Gaussian mixture models to tag fields around each open cluster in the proper motion space, and then we apply an unsupervised machine learning method to make the membership assignment to each cluster. For the studied clusters, with ages in the ~120-1900Myr range, we report an increase of ~45 per cent new member candidates on average in our sample. The data-driven selection approach of cluster members makes our catalogue a valuable resource for testing stellar evolutionary models and for assessing the cluster low-to-intermediate mass populations. This study is the first of a series intended to homogeneously reveal open cluster near-infrared sequences.2021MNRAS.503.1864Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/503/1864CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/633/A99 : Gaia DR2 open clusters in the Milky Way. IIJ/A+A/640/A1 : Portrait Galactic disc (Cantat-Gaudin+, 2020)J/MNRAS/496/4701 : Gaia-ESO Survey: members of 32 open clusters (Jackson+ 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/503/1864https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/503/1864http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/503/1864https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/503/1864https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/503/1864http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/503/1864GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/503/1864/table1 (Parameters of our cluster sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/503/1864/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/503/1864/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/503/1864/table1?GETtext/xml+votable180.050000true243.299-54.2270.005555555555555556Cone search capability for table J/MNRAS/503/1864/catalog (Astronomical data set in eight dimensions for each of the six cluster)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/503/1864/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/503/1864/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/503/1864/catalog?GETtext/xml+votable180.050000true194.282182323764-64.92303989646410.0055555555555555566/41649 41678 42153 42156 42371 42374-42375 42377 42380-42381 42496-42497 43032 430348.650015785639275e-20 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/503/1864?format=asciiOpticalInfrareddefaultJ/MNRAS/503/1864/table1Parameters of our cluster samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClusterCluster namemeta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainpmRA*Proper motion along RA, pmRA*cosDE, from Cantat-Gaudin & Anders (2020A&A...633A..99C, Cat. J/A+A/633/A99)mas/yrpos.pm;pos.eq.rafloatpmDEProper motion along DEmas/yrpos.pm;pos.eq.decfloatAgeAge from Cantat-Gaudin et al. (2020A&A...640A...1C, Cat. J/A+A/640/A1) (1)Myrtime.ageinte_AgeAge from Cantat-Gaudin et al. (2020A&A...640A...1C, Cat. J/A+A/640/A1) errorMyrstat.error;time.ageint(M-m)0JLiterature distance modulus from Jackson et al. (2020MNRAS.496.4701J, Cat. J/MNRAS/496/4701)magphot.mag.distModfloatE(B-V)Redenning from Jackson et al. (2020MNRAS.496.4701J, Cat. J/MNRAS/496/4701)magphot.color.excessfloate_(M-m)0JLiterature distance modulus from Jackson et al. (2020MNRAS.496.4701J, Cat. J/MNRAS/496/4701) errormagstat.errorfloat(M-m)0CLiterature distance modulus from Cantat-Gaudin et al. (2020A&A...640A...1C, Cat. J/A+A/640/A1)magphot.mag.distModfloate_(M-m)0CLiterature distance modulus from Cantat-Gaudin et al. (2020A&A...640A...1C, Cat. J/A+A/640/A1) errormagstat.errorfloate_E(B-V)Redenning from Jackson et al. (2020MNRAS.496.4701J, Cat. J/MNRAS/496/4701) errormagstat.errorfloatAvExtinction from Cantat-Gaudin et al. (2020A&A...640A...1C, Cat. J/A+A/640/A1)magphys.absorptionfloate_AvExtinction from Cantat-Gaudin et al. (2020A&A...640A...1C, Cat. J/A+A/640/A1) errormagstat.errorfloatp1Number of stars with membership probability p>=0.9, from Cantat-Gaudin & Anders (2020A&A...633A..99C, Cat. J/A+A/633/A99)meta.numberintN1Number of recovered sources for p1meta.numberintp2Number of stars with membership probability p>=0.9 from Jackson et al. (2020MNRAS.496.4701J, Cat. J/MNRAS/496/4701)meta.numberintN2Number of recovered sources for p2meta.numberintp3Number of stars with membership probability p>=0.9, this workmeta.numberintSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/503/1864/catalogAstronomical data set in eight dimensions for each of the six clusterrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDSequential number within the clustermeta.id;meta.mainintRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainpmRAProper motion along RA, pmRA*cosDEmas/yrpos.pm;pos.eq.radoublee_pmRAProper motion along RA errormas/yrstat.error;pos.pm;pos.eq.radoublepmDEProper motion along DEmas/yrpos.pm;pos.eq.decdoublee_pmDEProper motion along DE errormas/yrstat.error;pos.pm;pos.eq.decdoubleZmag? VVV Z magnitudemagphot.mag;em.opt.Idoublenullablee_Zmag? VVV Z magnitude errormagstat.error;phot.magdoublenullableYmag? VVV Y magnitudemagphot.mag;em.IR.Jdoublenullablee_Ymag? VVV Y magnitude errormagstat.error;phot.magdoublenullableJmag2MASS/VVV J magnitudemagphot.mag;em.IR.Jdoublee_Jmag2MASS/VVV J magnitude errormagstat.error;phot.magdoubleHmag2MASS/VVV H magnitudemagphot.mag;em.IR.Hdoublee_Hmag? 2MASS/VVV H magnitude errormagstat.error;phot.magdoublenullableKsmag2MASS/VVV Ks magnitudemagphot.mag;em.IR.Kdoublee_Ksmag2MASS/VVV Ks magnitude errormagstat.error;phot.magdoublePmembMembership probabilitystat.probabilityfloatClusterCluster namemeta.id.parentchar