J/MNRAS/243/492ivo://CDS.VizieR/J/MNRAS/243/492doi:10.26093/cds/vizier.72430492CDSKaluzny J.2017-10-12T12:59:59Z2013-11-06T12:38:35ZCDS support team

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

cds-question@unistra.fropen-star-clustersccd-photometryCCD BV photometry to V=20.5 of stars in the old open cluster NGC 6791 is presented. Comparison with the theoretical isochrones of VandenBerg gives a cluster age in the range of 10 to 12.5Gyr, and an apparent distance modulus of 13.45mag, adopting a solar metallicity. This cluster is only marginally younger than Palomar 12, which is the youngest globular cluster known. A search for short-period variables in the cluster field led to the discovery of only one low-amplitude variable, probably belonging to the FK Com-type stars. A very blue star was detected which may be an extremely young white dwarf formed in the cluster.1990MNRAS.243..492Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/243/492CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/PASP/115/413 : A star catalog for the open cluster NGC 6791 (Stetson+, 2003)J/AJ/123/3460 : Low-amplitude variables in NGC 6791 (Mochejska+, 2002)J/A+AS/114/1 : CCD UBVI photometry of NGC 6791 (Kaluzny+, 1995)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/243/492https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/243/492http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/243/492https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/243/492https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/243/492http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/243/492GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/243/492/table2 (BV photometry of NGC 6791)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/243/492/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/243/492/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/243/492/table2?GETtext/xml+votable180.050000true290.272878637.74613470.0055555555555555566/14573 145753.322582951404819e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/243/492?format=asciiOpticaldefaultJ/MNRAS/243/492/table2BV photometry of NGC 6791recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/1759] Identification numbermeta.idintIDsNumber of cross-identifications for this starmeta.ref.urlintnullableXposX position (1)pixpos.cartesian.x;instr.detfloatYposY position (1)pixpos.cartesian.y;instr.detfloatVmagV magnitudemagphot.mag;em.opt.Vfloate_Vmagrms uncertainty on Vmagmagstat.error;phot.mag;em.opt.VfloatB-VB-V colour indexmagphot.color;em.opt.B;em.opt.Vfloate_B-Vrms uncertainty on B-Vmagstat.error;phot.color;em.opt.Bfloat_RAPosition computed from a comparison with UCAC4 (I/322) ({sigma}=0.10'') (right ascension part)degpos.eq.ra;meta.main_DEPosition computed from a comparison with UCAC4 (I/322) ({sigma}=0.10'') (declination part)degpos.eq.dec;meta.mainJ/MNRAS/243/492/ngc6791Cross-identificationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/16258] Identification number, this papermeta.idintPSimbad column added by the CDSmeta.ref.urlintnullableID1Kinman (1965ApJ...142..655K) designationmeta.idcharu_ID1[?] Uncertainty flag on ID1meta.code.errorcharID2Harris & Canterna (1981AJ.....86.1332H) designation <Cl* NGC 6791 HC SN> in Simbadmeta.idcharID3[1/146]?=- Anthony-Twarog & Twarog (1985ApJ...291..595A), <Cl* NGC 6791 ATT NNN> in Simbadmeta.idintnullableID4[1/1759]? Kaluzny (1990MNRAS.243..492K)meta.idintnullableID5[0/990]?=- Kaluzny & Udalski (1992AcA....42...29K), <Cl* NGC 6791 KU NNNN> in Simbadmeta.idintnullableID6Garnavich et al. (1994AJ....107.1097G), <Cl* NGC 6791 GVZH RNN> in Simbadmeta.idcharID7[1/8062]?=- Montgomery et al. (1994AJ....108..585M), <Cl* NGC 6791 MJPT NNNN> in Simbadmeta.idintnullableID8Kaluzny & Rucinski (1995A&AS..114....1K), <Cl* NGC 6791 KU BNN> in Simbadmeta.idcharID9[1/3927]?=- Kaluzny & Rucinski (1995A&AS..114....1K) <Cl* NGC 6791 KR 1-NNNN> in Simbadmeta.idintnullableID10[1206/15224]?=- Kaluzny & Rucinski (1995A&AS..114....1K), <Cl* NGC 6791 KR 2-NNNN> in Simbadmeta.idintnullableID11Mochejska et al. (2002AJ....123.3460M), <Cl* NGC 6791 KR VNN> in Simbadmeta.idchar