J/AJ/105/1441ivo://CDS.VizieR/J/AJ/105/1441doi:10.26093/cds/vizier.51051441CDSPROSSER C.F.2023-04-06T16:49:26Z1998-02-27T09:58:03ZCDS support team

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

cds-question@unistra.fropen-star-clustersastrometryinfrared-photometryvisible-astronomybroad-band-photometryspectroscopyThe results of a combined astrometric, photometric, and spectroscopic program to identify members of the open cluster IC 4665 are presented. Numerous new proper motion/photometric candidate members and at least 23 M dwarfs with H-alpha emission have been identified. A reanalysis of IC 4665's age using different methods yields conflicting results ranging from approx. 3x10^7^ yr to the age of the Pleiades. This study provides a list of candidate cluster members in the intermediate and low-mass regime of this cluster. Future spectroscopic observations of these candidates should eventually identify true cluster members. The results of new echelle observations of some candidates and the photometric monitoring of one apparent cluster member are given in an appendix.1993AJ....105.1441Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/105/1441CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/105/1441https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/105/1441http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/105/1441https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/105/1441https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/105/1441http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/105/1441GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/105/1441/table1 (IC 4665: Lick 30 s plates (3 exposures, each of 30 s duration) proper motion candidates)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/105/1441/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/105/1441/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/105/1441/table1?GETtext/xml+votable180.050000true266.15279455.62140030.005555555555555556Cone search capability for table J/AJ/105/1441/table2 (IC 4665: Yerkes & Lick proper motion candidates)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/105/1441/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/105/1441/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/105/1441/table2?GETtext/xml+votable180.050000true266.15279455.62140030.0055555555555555566/31785 31787-31788 317903.322582951404819e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/105/1441?format=asciiOpticalInfrareddefaultJ/AJ/105/1441/table1IC 4665: Lick 30 s plates (3 exposures, each of 30 s duration) proper motion candidatesiNumber of observations at I magnitudemeta.numberintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPRunning identification numbermeta.id;meta.mainintVJohnson V magnitudemagphot.mag;em.opt.VfloatB-V[]? B-V colormagphot.color;em.opt.B;em.opt.VfloatnullableV-I[]? V-I colormagphot.color;em.opt.V;em.opt.IfloatnullableR-I[]? R-I colormagphot.color;em.opt.R;em.opt.IfloatnullablevNumber of observations at V magnitudemeta.numberintbNumber of observations at B magnitudemeta.numberintrNumber of observations at R magnitudemeta.numberintRA1950Right ascension 1950pos.eq.ra;meta.mainDE1950Declination 1950pos.eq.dec;meta.mainXSurvey coordinates (East)mmpos.cartesian.xfloatYSurvey coordinates (North)mmpos.cartesian.yfloatpmXRelative proper motion componentarcsec/hyrpos.pmfloatpmYRelative proper motion componentarcsec/hyrpos.pmfloate_pmXError in pmX, one-sigma errorarcsec/hyrstat.errorfloate_pmYError in pmY, one-sigma errorarcsec/hyrstat.errorfloatPROBProper motion membership probability (1)pos.pm;stat.probabilitycharN[]? Number of Yerkes fields used to determine proper motion (table2 only)meta.numberintnullableMember[Y?N ] Membership on the basis of photometrymeta.code.member;photcharOtherOther previous identificationsmeta.idchar_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)pos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)pos.eq.decnullableindexedJ/AJ/105/1441/table2IC 4665: Yerkes & Lick proper motion candidatesDE1950Declination 1950pos.eq.dec;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPRunning identification numbermeta.id;meta.mainintVJohnson V magnitudemagphot.mag;em.opt.VfloatB-V[]? B-V colormagphot.color;em.opt.B;em.opt.VfloatnullableV-I[]? V-I colormagphot.color;em.opt.V;em.opt.IfloatnullableR-I[]? R-I colormagphot.color;em.opt.R;em.opt.IfloatnullablevNumber of observations at V magnitudemeta.numberintbNumber of observations at B magnitudemeta.numberintiNumber of observations at I magnitudemeta.numberintrNumber of observations at R magnitudemeta.numberintRA1950Right ascension 1950pos.eq.ra;meta.mainXSurvey coordinates (East)mmpos.cartesian.xfloatYSurvey coordinates (North)mmpos.cartesian.yfloatpmXRelative proper motion componentarcsec/hyrpos.pmfloatpmYRelative proper motion componentarcsec/hyrpos.pmfloate_pmXError in pmX, one-sigma errorarcsec/hyrstat.errorfloate_pmYError in pmY, one-sigma errorarcsec/hyrstat.errorfloatPROBProper motion membership probability (1)pos.pm;stat.probabilitycharN[]? Number of Yerkes fields used to determine proper motion (table2 only)meta.numberintnullableMember[Y?N ] Membership on the basis of photometrymeta.code.member;photcharOtherOther previous identificationsmeta.idchar_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)pos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)pos.eq.decnullableindexed