J/MNRAS/511/4702ivo://CDS.VizieR/J/MNRAS/511/4702doi:10.26093/cds/vizier.75114702CDSGriggio M.Bedin L.R.2025-07-18T20:17:18Z2025-02-18T15:59:40ZCDS support team

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

cds-question@unistra.fropen-star-clustersastronomical-modelsvisible-astronomytrigonometric-parallaxastrometryIn this work, starting from the well-accepted relations in literature, we introduce a new formalism to compute the astrometric membership probabilities for sources in star clusters, and we provide an application to the case of the open cluster M 37. The novelty of our approach is a refined - and magnitude- dependent - modelling of the parallax distribution of the field stars. We employ the here-derived list of members to estimate the cluster's mean systemic astrometric parameters, which are based on the most recent Gaia's catalogue (EDR3).2022MNRAS.511.4702Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/511/4702CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/908/L5 : Color-magnitude diagram for {omega} Centauri (Soltis+, 2021)J/A+A/493/959 : UBV(RI)cHalpha photometry in omega Cen (Bellini+, 2009)J/A+A/484/609 : BVI photometry and proper motions in M67 (Yadav+, 2008)J/ApJ/856/23 : BANYAN. XI. The BANYAN {Sigma} algorithm (Gagne+, 2018)J/A+A/618/A59 : Gaia DR2 confirmed new nearby open clustersJ/A+A/615/A49 : TGAS stars membership in 128 open clustersJ/A+AS/146/251 : Open clusters absolute proper motions. I. (Baumgardt+, 2000)J/A+A/633/A99 : Gaia DR2 open clusters in the Milky Way. III/350 : Gaia EDR3 (Gaia Collaboration, 2020)I/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/511/4702https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/511/4702http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/511/4702https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/511/4702https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/511/4702http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/511/4702GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/511/4702/table (M 37 star's cluster with their P_memb_ computed with the formalism presented in this work)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/511/4702/table?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/511/4702/table?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/511/4702/table?GETtext/xml+votable180.050000true88.075870832.55160970.0055555555555555565/6119 6130 6/24471 24500-24501 24514-24515 24524 24526 24544-24545https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/511/4702?format=asciiOpticaldefaultJ/MNRAS/511/4702/tableM 37 star's cluster with their P_memb_ computed with the formalism presented in this workrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaEDR3Gaia EDR3 source identifier (sourceID)meta.id;meta.mainPmembComputed membership probability P_{omega}_ including the parallax distribution following the equation 8 of the section 3 (P)pos.parallax;meta.modelledfloatSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPosition from I/350/gaiaedr3 Gaia DR3 catalog (right ascension part)degpos.eq.ra;meta.mainindexed_DEPosition from I/350/gaiaedr3 Gaia DR3 catalog (declination part)degpos.eq.dec;meta.mainindexed