J/A+A/429/607ivo://CDS.VizieR/J/A+A/429/607doi:10.26093/cds/vizier.34290607CDSOrtolani S.Bica E.Barbuy B.Zoccali M.2005-08-12T14:09:59Z2005-08-12T14:09:35ZCDS support team

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

cds-question@unistra.fropen-star-clustersvisible-astronomybroad-band-photometryBV photometry of the faint open clusters Berkeley 36, Berkeley 73 and Biurakan 13 are studied. For these clusters no colour-magnitude analyses were previously available. The colour-magnitude Diagrams indicate that they are all old open clusters. The derived ages are ~4Gyr for Berkeley 36, and ~2.3Gyr for both Berkeley 73 and Biurakan 13. The clusters are not very reddened, with E(B-V)=0.25, 0.10 and 0.30 respectively for Berkeley 36, Berkeley 73 and Biurakan 13. Berkeley 36 and Berkeley 73 are located at a distance from the Galactic center of 10kpc, while Biurakan 13 is much farther, at 15kpc. A peak in the age distribution appears at 5Gyr suggesting a distinct star forming event in the disk.2005A&A...429..607Ohttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/429/607CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/429/607https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/429/607http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/429/607https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/429/607https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/429/607http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/429/607GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/429/607/table2bB, V photometry for Berkeley 73recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequence number, in the clusterintXposx pixel coordinate (1)pixfloatYposy pixel coordinate (1)pixfloatRadradius from cluster centerpixdoubleVmagV magnitudesmagfloatB-VB-V colour indexmagfloatJ/A+A/429/607/table2aB, V photometry for Berkeley 36recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequence number, in the clusterintXposx pixel coordinate (1)pixfloatYposy pixel coordinate (1)pixfloatRadradius from cluster centerpixdoubleVmagV magnitudesmagfloatB-VB-V colour indexmagfloatJ/A+A/429/607/table2cB, V photometry for Biurakan 13recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequence number, in the clusterintXposx pixel coordinate (1)pixfloatYposy pixel coordinate (1)pixfloatRadradius from cluster centerpixdoubleVmagV magnitudesmagfloatB-VB-V colour indexmagfloat