J/A+A/617/A15ivo://CDS.VizieR/J/A+A/617/A15doi:10.26093/cds/vizier.36170015CDSOlivares J.Sarro L.M.Moraux E.Berihuete A.Bouy H.,Hernandez-Jimenez S.Bertin E.Galli P.A.B.Huelamo N.Bouvier J.,Barrado D.2019-04-18T11:30:22Z2018-09-18T09:24:07ZCDS support team

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

cds-question@unistra.fropen-star-clustersastronomical-object-identificationThe photometric and astrometric measurements of the Pleiades DANCe DR2 survey provide an excellent test case for the benchmarking of statistical tools aiming at the disentanglement and characterisation of nearby young open cluster (NYOC) stellar populations. We aim to develop,test, and characterise of a new statistical tool (intelligent system) for the sifting and analysis of NYOC populations. Using a Bayesian formalism, with this statistical tool we were able to obtain the posterior distributions of parameters governing the cluster model. It also used hierarchical bayesian models to establish weakly informative priors, and incorporates the treatment of missing values and non-homogeneous (heteroscedastic) observational uncertainties. From simulations, we estimated that this statistical tool renders kinematic (proper motion) and photometric (luminosity) distributions of the cluster population with a contamination rate of 5.8+/-0.2%. The luminosity distributions and present day mass function agree with the ones found in a recent study, on the completeness interval of the survey. At the probability threshold of maximum accuracy, the classifier recovers ~90% of the recently published candidate members and finds 10% of new ones. A new statistical tool for the analysis of NYOC is introduced, tested, and characterised. Its comprehensive modelling of the data properties allows it to get rid of the biases present in previous works. In particular, those resulting from the use of only completely observed (non-missing) data and the assumption of homoskedastic uncertainties. Also, its Bayesian framework allows it to properly propagate observational uncertainties into membership probabilities and cluster velocity and luminosity distributions. Our results are in a general agreement with those from the literature, although we provide the most up-to-date and extended list of candidate members of the Pleiades cluster.2018A&A...617A..15Ohttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/617/A15CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/563/A45 : Pleiades cluster membership probabilities (Sarro+, 2014)J/A+A/577/A148 : The Seven Sisters DANCe. I. Pleiades (Bouy+, 2015)J/A+A/596/A113 : The Seven Sisters DANCe. II. Pleiades (Barrado+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/617/A15https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/617/A15http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/617/A15https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/617/A15https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/617/A15http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/617/A15GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/617/A15/table1 (Membership probabilities and identifiers)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/617/A15/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/617/A15/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/617/A15/table1?GETtext/xml+votable180.050000true56.837083325.525750.0055555555555555563/7 5/89-91 94-95 101 103 109 209 212 288 290 296 6/319 355 369-371 374-375 403 409 411 445 447 832-833 845 852-853 856 1064 1066-1067 1158 1164 1166 1188 1192-1194https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/617/A15?format=asciidefaultJ/A+A/617/A15/table1Membership probabilities and identifiersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBouyIDBouy et al., 2015, Cat. J/A+A/577/A148 identifier, JHHMMSS.ss+DDMMSS.smeta.id;meta.maincharSarroIDSarro et al., 2014, Cat. J/A+A/563/A45 identifiermeta.idintpcCluster membership probabilitystat.probabilitydoublepembEqual-mass binaries membership probabilitystat.probabilitydoubles_pcStandard deviation of cluster membership probabilitystat.stdev;stat.probabilitydoubles_pembStandard deviation of equal-mass binaries membership probabilitystat.stdev;stat.probabilitydoubleMissingCI[0/1] indicating if colour index i-Ks is absentmeta.codeint_RAPosition from Bouy et al. name (right ascension part)degpos.eq.ra;meta.mainindexed_DEPosition from Bouy et al. name (declination part)degpos.eq.dec;meta.mainindexed