J/A+A/399/105ivo://CDS.VizieR/J/A+A/399/105doi:10.26093/cds/vizier.33990105CDSMermilliod J.-C.Latham D.W.Glushkova E.V.Ibrahimov M.A.,Batirshinova V.M.Stefanil R.P.James D.J2026-01-20T11:47:20Z2003-04-10T20:56:58ZCDS support team

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

cds-question@unistra.fropen-star-clustersgiant-starsradial-velocityRadial-velocity and BV CCD observations of 29 red-giant candidates in the central part of the intermediate-age open cluster NGC 1817 have confirmed the membership of 21 stars. In addition, we have used radial velocities and new UBVR photoelectric photometry to investigate the membership of 59 new candidates located in an outer corona surrounding NGC 1817, identified from the POSS plates. We have confirmed 18 new members out to a distance of 27' from the centre, thus doubling the previous cluster radius. Ten definite spectroscopic-binary members have been discovered, corresponding to a binary frequency of 25.6% and four orbits have been determined so far. Three additional stars have been identified as possible spectroscopic-binary members. We derive a cluster mean velocity of +65.33+/-0.09 (0.52 s.e.) km/s based on 29 members with no detected velocity variations plus the 3 binary members with orbital solutions.2003A&A...399..105Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/399/105CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/299/53 : Red giants in NGC 3680 and IC 4651 (Mermilliod+, 1995)J/A+A/307/80 : Velocities of red giants in NGC 2099 (Mermilliod+ 1996)J/A+A/324/91 : Melotte 71 red giants radial velocities (Mermilliod+ 1997)J/A+A/339/423 : Velocities of red giants in NGC 752 (Mermilliod+ 1998)J/A+A/375/30 : Radial velocities in open clusters (Mermilliod+, 2001)J/A+AS/134/301 : NGC 2354 red giants (Claria+ 1999)J/A+A/423/189 : 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/399/105https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/399/105http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/399/105https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/399/105https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/399/105http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/399/105GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/399/105/position (Positions from WEBDA database)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/399/105/position?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/399/105/position?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/399/105/position?GETtext/xml+votable180.050000true78.080762516.680238890.005555555555555556Cone search capability for table J/A+A/399/105/table3 (Photoelectric UBVR and radial-velocity results for the outer red giants)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/399/105/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/399/105/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/399/105/table3?GETtext/xml+votable180.050000true78.129166716.82372220.0055555555555555566/24114-24115 24120-241213.322582951404819e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/399/105?format=asciidefaultJ/A+A/399/105/positionPositions from WEBDA databaserecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWEBDAWEBDA star number (G1)meta.id;meta.mainintprimaryRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainNote[*] *: positions from USNO-A2.0 (Cat. <I/253>)meta.notecharJ/A+A/399/105/table1Radial-velocity datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWEBDAWEBDA star number (G1)meta.id;meta.mainintTelTelescope/instrument designation (2)meta.idcharHJDHeliocentric Julian Datedtime.epochdoubleRVRadial velocitykm/sspect.dopplerVeloc;pos.heliocentricfloate_RVError on the radial velocitykm/sstat.errorfloatJ/A+A/399/105/table2CCD BV and radial-velocity results for the inner red giantsRemRemarks (1)meta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWEBDAWEBDA star number (G1)meta.id;meta.mainintHH? Harris & Harris (1977AJ.....82..612H) numbermeta.idintnullableVmag? V magnitudemagphot.mag;em.opt.VfloatnullableB-V? B-V colour indexmagphot.color;em.opt.B;em.opt.VfloatnullableRVRadial velocitykm/sspect.dopplerVeloc;pos.heliocentricfloate_RVrms uncertainty on RVkm/sstat.errorfloato_RVNumber of observation in RVmeta.numberintDTTime interval spanned by the observationsdtime.interval;obsintP(chi2)Probability that the scatter is only due to random noisestat.fit.goodness;src.varfloatJ/A+A/399/105/table3Photoelectric UBVR and radial-velocity results for the outer red giantsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMem[M Mn] M: Member, nM: no membermeta.code.membercharWEBDAStar number (G1)meta.id;meta.mainintEG[1/59] Giant numbermeta.idint[BTZ98]? Balaguer-Nunez et al., 1998, Cat. <J/A+AS/133/387> numbermeta.idintnullableRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainPmemb? Probabylity of membershipmeta.code.memberfloatnullableVmagV magnitudemagphot.mag;em.opt.VfloatU-BU-B colour indexmagphot.color;em.opt.U;em.opt.BfloatB-VB-V colour indexmagphot.color;em.opt.B;em.opt.VfloatV-RV-R colour indexmagphot.color;em.opt.V;em.opt.Rfloato_VmagNumber of observations in UBVRmeta.numberintRVRadial velocitykm/sspect.dopplerVeloc;pos.heliocentricfloate_RVrms uncertainty on RVkm/sstat.errorfloato_RVNumber of observations in RVmeta.numberintDT? Time interval spanned by the observationstime.intervalintnullableP(chi2)? Probability that the scatter is only due to random noisestat.fit.goodness;src.varfloatnullableComSB: spectroscopic binarymeta.notechar