J/A+AS/93/293ivo://CDS.VizieR/J/A+AS/93/293CDSTucholke H.J.2018-02-01T11:50:43Z2015-02-23T11:51:17ZCDS support team

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

cds-question@unistra.frglobular-star-clustersastrometryproper-motionsThe study determines relative proper motions for stars brighter than 17.0mag in a 1.5x1.5{deg} field centered on the globular cluster 47 Tuc (NGC 104). Proper motion and membership probabilities are tabulated for 3076 stars within 32 arcmin of the cluster center. A proper motion of 47 Tuc relative to the SMC is derived, which relies on the assumption that the mean proper motion of field stars is the same as that in the nearby field of NGC 362, and on the detection of SMC stars in that field. The resulting space motion confirms the membership of 47 Tuc in the rapidly rotating, flattened, metal-rich disk subgroup of the galactic cluster system. Relative proper motions for stars centered on the globular cluster NGC 362 are determined. NGC 362 is found to exhibit a highly eccentric orbit, typical for a member of the halo subgroup of the galactic globular cluster system. The perigalactic distance of NGC 362 is very small (less than about 1kpc). Description; The plate material consists in 14 plates observed between 1895 and 1987; the plates were digitized at the Munster Astronomical Institute (accuracy~0.7{mu}m). The astrometry reduction uses the Perth-70 catalog (Hog & von der Heide 1976, I/62)1992A&AS...93..293Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/93/293CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/93/293https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/93/293http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/93/293https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/93/293https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/93/293http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/93/293GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+AS/93/293/table6 (Stars within 45' of 47 Tuc centre)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+AS/93/293/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/A+AS/93/293/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+AS/93/293/table6?GETtext/xml+votable180.050000true4.30713501-72.014671740.0055555555555555566/33315 33321 33323-33324https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+AS/93/293?format=asciiOpticaldefaultJ/A+AS/93/293/table6Stars within 45' of 47 Tuc centreSeq[1/3076] Running numbermeta.id;meta.mainintprimaryr_ID[35DE- ] Source of identifier (1)meta.ref;pos.framecharID[15/8756]? Identifier in source r_IDmeta.idintnullableu_IDUncertainty flag (:) for IDmeta.code.errorcharBmag[11.4/18.8]? Magnitude in B (+/-0.25mag)magphot.mag;em.opt.Bfloatnullableu_BmagUncertainty flag on Bmagmeta.code.errorcharB-R[-0.33/4.7]? Color index (+/-0.40mag)magphot.color;em.opt.B;em.opt.Rfloatnullableu_B-RUncertainty flag on B-Rmeta.code.error;phot.color;em.opt.BcharXpos[-2470/2447] Relative position to adopted cluster centre (1pix=0.7695arcsec)pixpos.cartesian.x;instr.platefloatYpos[-2496/2444] Relative position to adopted cluster centre (1pix=0.7695arcsec)pixpos.cartesian.y;instr.platefloatpmRAProper motion in RA ({mu}_{alpha}_cos({delta}))mas/yrpos.pm;pos.eq.rafloate_pmRAError on pmRAmas/yrstat.error;pos.pm;pos.eq.rafloatpmDEProper motion in Dec ({mu}_{delta}_)mas/yrpos.pm;pos.eq.decfloate_pmDEError on pmDEmas/yrstat.error;pos.pm;pos.eq.decfloatN1Number of first-epoch platesmeta.numberintN2Number of second-epoch platesmeta.numberintPr[0/99] Membership probability%statfloatRAB1950Right Ascension B1950 (Epoch 1985.5, Perth-70-System, +/-0.4")pos.eq.ra;meta.mainDEB1950Declination B1950pos.eq.dec;meta.mainVarVariable name (from Table 7)meta.idchar_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into account (computed by VizieR, not part of the original data)pos.eq.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into account (computed by VizieR, not part of the original data)pos.eq.decnullableindexed