J/A+A/324/91ivo://CDS.VizieR/J/A+A/324/91doi:10.26093/cds/vizier.33240091CDSMermilliod J.-C.Claria J.J.Andersen J.Mayor M.1997-12-09T17:01:07Z1997-12-09T18:01:04ZCDS support team

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

cds-question@unistra.fropen-star-clustersgiant-starsradial-velocityNew CORAVEL radial-velocity observations and UBV photometry of 24 red giants in the field of the intermediate-age open cluster Mel 71 are analysed for membership and duplicity. The membership of 16 stars is confirmed, one star is a possible member, and 8 spectroscopic binaries have been discovered, all amongst the cluster stars. Four of their orbits have been determined, with periods ranging from 74 to 1627 days. The mean cluster velocity is +50.14+/-0.14 (s.e.)km/s, and the binary frequency is unusually high (8/16=50%). The best isochrone fit to the observed colour-magnitude digram is obtained for logt=9.00 and Z=0.008. However, some discrepancies appear between the observed and predicted locations of the red giant clump.1997A&A...324...91Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/324/91CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/299/53 : Part IV. NGC 3680 and IC 4651 (Mermilliod+ 1995)J/A+A/307/80 : Part V. NGC 2099 (Mermilliod+ 1996)J/A+A/319/481 : Part VI. 10 spectroscopic binaries orbits (Mermilliod+ 1997)J/A+A/375/30 : Part IX. Radial velocities in open clusters (Mermilliod+ 2001)J/A+A/423/189 : Part XI. NGC 2477 red giants UBV phot. & RV (Eigenbrod+, 2004)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/324/91https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/324/91http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/324/91https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/324/91https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/324/91http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/324/91GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/324/91/table4*Radial velocity data for Melotte 71recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDStar numbermeta.id;meta.mainintHJDHeliocentric Julian Datedtime.epochdoubleCompComponent of a double-lined binarymeta.notecharRVRadial velocitykm/sphys.veloc;pos.heliocentricfloate_RVError on the radial velocitykm/sstat.errorfloat