J/other/ApSS/366ivo://CDS.VizieR/J/other/ApSS/366.92CDSSanchez NLopez-Martinez FOcando SBlay P.2022-10-04T12:15:59Z2022-01-19T09:27:08ZCDS support team

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

cds-question@unistra.fropen-star-clustersphotometryproper-motionseffective-temperaturestellar-massesvisible-astronomyThere is a growing interest in the automated characterization of open clusters using data from the Gaia mission. This work evidences the importance of choosing an appropriate sampling radius (the radius of the circular region around the cluster used to extract the data) and the usefulness of additional multiband photometry in order to achieve accurate results. We address this issue using as a case study the cluster Alessi-Teutsch 9. The optimal sampling is determined by counting the number of assigned members at different sampling radii. By using this strategy with data from Gaia EDR3 and with observed photometry in 12 bands spanning the optical range from 3000 to 10000{AA}, approximately, we are able to obtain reliable members and to determine the properties of the cluster. The spatial distribution of stars show a two-component structure with a central core of radius 12-13 arcmin and an outer halo extending out to 35 arcmin. With the derived cluster distance (654pc) we obtain that the number density of stars 0.06star/pc^3^, making Alessi-Teutsch 9 one of the less dense known open clusters. The short relaxation time reveals that it is a dynamically relaxed and gravitationally bound system.2021Ap&SS.366...92Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/ApSS/366.92CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/ApSS/366.92https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/ApSS/366.92http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/ApSS/366.92https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/ApSS/366.92https://vizier.iucaa.in/viz-bin/votable?-source=J/other/ApSS/366.92http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/ApSS/366.92GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/other/ApSS/366.92/table (Data for stars in Alessi-Teutsch 9 (ASCC 10))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/ApSS/366.92/table?https://vizier.iucaa.in/viz-bin/conesearch/J/other/ApSS/366.92/table?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/ApSS/366.92/table?GETtext/xml+votable180.050000true51.8700586349590134.9832935735130.0055555555555555566/893 895 1576 15781.9867573869263685e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/other/ApSS/366.92?format=asciiOpticaldefaultJ/other/ApSS/366.92/tableData for stars in Alessi-Teutsch 9 (ASCC 10)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainpmRAProper motion in right ascension, pmRA*cosDEmas/yrpos.pm;pos.eq.rafloate_pmRAError of pmRAmas/yrstat.error;pos.pm;pos.eq.rafloatpmDEProper motion in declinationmas/yrpos.pm;pos.eq.decfloate_pmDEError of pmDEmas/yrstat.error;pos.pm;pos.eq.decfloatPlxParallaxmaspos.parallaxfloate_PlxError of Plxmasstat.error;pos.parallaxfloatGmagG magnitude from Gaiamagphot.mag;em.optdoublee_GmagError of Gmagmagstat.error;phot.magdoubleBP-RPBP-RP color from Gaiamagphot.color;em.opt.B;em.opt.RdoubleAvVisual extinctionmagphys.absorptionfloatTeffEffective temperatureKphys.temperature.effectivefloate_TeffError of TeffKstat.error;phys.temperature.effectivefloatLbolBolometric luminositysolLumphys.luminosityfloate_LbolError of LbolsolLumstat.errorfloatMassMasssolMassphys.massfloate_MassError of MsolMassstat.error;phys.massfloatRadRadiussolRadphys.size.radiusfloat