J/A+A/693/A125ivo://CDS.VizieR/J/A+A/693/A125doi:10.26093/cds/vizier.36930125CDSHu Q.Qin S.Luo Y.Li Y.2025-03-03T20:01:06Z2025-01-10T09:21:20ZCDS support team

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

cds-question@unistra.fropen-star-clustersThe study of open cluster morphology is pivotal for exploring their formation and evolutionary processes. We manage to assess the morphological stability of 105 nearby open clusters within tidal radii on the X-Y, X-Z, and Y-Z planes of the heliocentric Cartesian coordinate system, utilizing member catalogs from the literature. Meanwhile, we also delve into factors potentially impacting the clusters' morphological stability on these projection planes. We used the rose diagram method by constructing the 3D projected morphology of sample clusters to quantify the morphological stability of their 3D projected morphology. Our analysis indicates there is a demonstrated linear positive correlation between the number of sample clusters' member stars within tidal radii and their morphological stability in different 3D projection planes. This may suggest that the more member stars there are within the tidal radius of a cluster, the stronger its own gravitational binding capacity is, resulting in strong morphological stability. We find a direct link between the clusters' morphological stabilities in the X-Z plane within tidal radii and their velocity dispersion in the same plane, suggesting that the morphological stabilities in the X-Z plane may be dependent on internal dynamics. Moreover, the morphological stability of the clusters' 3D projection is influenced by their spatial positions along the Y axis, but not linearly, indicating that the environmental changes at the clusters' location may affect their morphological stability. Likewise, specific external forces can have an effect on their morphological stability. This research introduces a novel perspective for understanding the morphological stability of open clusters, with a particular focus on their 3D projected morphologies.2025A&A...693A.125Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/693/A125CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/693/A125https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/693/A125http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/693/A125https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/693/A125https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/693/A125http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/693/A125GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/693/A125/tablea1 (The morphological stability and position parameters of the clusters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/693/A125/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/693/A125/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/693/A125/tablea1?GETtext/xml+votable180.050000true122.468165-49.17639310.0055555555555555566/463 511 862 1209 1326 1347 1539 1913 2373 2381 2436 3004 3136 3556 3604 4698 6869 12915 13786 14058 14162 14233 14306-14307 14363 14553 14571 14689 14790 14878 15226 15432 15693 16490 21438 21450 21529 21927 22058 22805 22859 22880 22895 22993 23410 23584 23685 23717 24098 28711 28806 29121 29157-29158 29728 29777 30439 31071 31790 31812 31853 32580 33102 34538 37231 37332 37592 37613 37679 37681 37790 37817 37892 37933 38018 38051 38073 38119 38539 38627 39160 39172 39179 39181 39216 39251 39354-39355 39408 39548 39714 39739 40878 41314 41436 41524 41703 41995 42026 42268 42415 47273https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/693/A125?format=asciidefaultJ/A+A/693/A125/tablea1The morphological stability and position parameters of the clustersSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCluster namemeta.id;meta.maincharXCluster X coordinate within heliocentric Cartesian coordinates framepcpos.frame;pos.heliocentricfloatYCluster Y coordinate within heliocentric Cartesian coordinates framepcpos.frame;pos.heliocentricfloatZCluster Z coordinate within heliocentric Cartesian coordinates framepcpos.frame;pos.heliocentricfloatScorexy/SouterxyMorphological stability on the X-Y projection planestat.fit.paramfloate_Scorexy/SouterxyError of morphological stability on the X-Y projection planestat.errorfloatScorexz/SouterxzMorphological stability on the X-Z projection planestat.fit.paramfloate_Scorexz/SouterxzError of morphological stability on the X-Z projection planestat.errorfloatScoreyz/SouteryzMorphological stability on the Y-Z projection planestat.fit.paramfloate_Scoreyz/SouteryzError of morphological stability on the Y-Z projection planestat.errorfloat_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/A+A/693/A125/tablea2The external forces and fundamental parameters of the clusterse_FRError of radial force (in 2pi*GM/pc^2^ unit)stat.errorfloatFzVertical force (in 2pi*GM/pc^2^ unit)phys.angMomentumfloate_FzError of vertical force (in 2pi*GM/pc^2^ unit)stat.errorfloate_EError of orbital eccentricitystat.errorfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCluster namemeta.id;meta.maincharNrtNumber of members within the tidal radiusmeta.numberfloate_NrtError of number of members within the tidal radiusstat.errorfloatRtTidal radii of the sample clusterspcsrc.sample;phys.size.radiusfloate_RtError of tidal radii of the sample clusterspcstat.errorfloatFRRadial force (in 2pi*GM/pc^2^ unit)phys.angMomentumfloatEOrbital eccentricitysrc.orbital.eccentricityfloatJ/A+A/693/A125/tablea3The velocity dispersion and other parameters of the clustersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCluster namemeta.id;meta.maincharsigmaVxyVelocity dispersion of sample clusters in the X-Y projected planekm/sphys.veloc.dispersionfloate_sigmaVxyError of velocity dispersion of sample clusters in the X-Y projected planekm/sstat.errorfloatsigmaVxzVelocity dispersion of sample clusters in the X-Z projected planekm/sphys.veloc.dispersionfloate_sigmaVxzError of velocity dispersion of sample clusters in the X-Z projected planekm/sstat.errorfloatsigmaVyzVelocity dispersion of sample clusters in the Y-Z projected planekm/sphys.veloc.dispersionfloate_sigmaVyzError of velocity dispersion of sample clusters in the Y-Z projected planekm/sstat.errorfloatNRvNumber of members with radial velocities for calculation of velocity dispersion of sample clustersmeta.numberintrxyRadii of the central core regions of sample clusters on the X-Y projection planephys.angSize;srcfloate_rxyError of radii of the central core regions of sample clusters on the X-Y projection planestat.errorfloatrxzRadii of the central core regions of sample clusters on the X-Z projection planephys.angSize;srcfloate_rxzError of radii of the central core regions of sample clusters on the X-Z projection planestat.errorfloatryzRadii of the central core regions of sample clusters on the Y-Z projection planephys.angSize;srcfloate_ryzError of radii of the central core regions of sample clusters on the Y-Z projection planestat.errorfloat