J/MNRAS/356/647ivo://CDS.VizieR/J/MNRAS/356/647doi:10.26093/cds/vizier.73560647CDSCarraro G.Mendez R.A.Costa E.2024-06-30T20:17:02Z2013-11-20T16:02:19ZCDS support team

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

cds-question@unistra.fropen-star-clustersphotometryWe report on VI charge-coupled device photometry of two fields centred in the region of the open clusters NGC 6404 and 6583 down to V=22.0. So far these clusters have never been studied, and we provide for the first time estimates of their fundamental parameters, namely, radial extent, age, distance and reddening. We find that the radius of NGC 6404 is 2.0-arcmin, as previously proposed, while the radius of NGC 6583 is 1.0 arcmin, significantly lower than previous estimates. Both clusters turn out to be of intermediate age (0.5-1.0Gyr old), and located inside the solar ring, at a Galactocentric distance of about 6.5kpc. These results make these objects very interesting targets for spectroscopic follow-up to measure their metallicity. In fact, they might allow us to enlarge by more than 1 kpc the baseline of the radial abundance gradient in the Galactic disc towards the Galactic Centre direction. This baseline is currently rather narrow especially for clusters of this age.2005MNRAS.356..647Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/356/647CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/ocl : Optically visible open clusters and Candidates (Dias+ 2002-13)J/A+A/523/A11 : Open clusters towards the Galactic center (Magrini+, 2010)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/356/647https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/356/647http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/356/647https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/356/647https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/356/647http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/356/647GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/356/647/ngc6404 (NGC6404 VI magnitudes)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/356/647/ngc6404?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/356/647/ngc6404?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/356/647/ngc6404?GETtext/xml+votable180.050000true265.0130875-33.20229830.005555555555555556Cone search capability for table J/MNRAS/356/647/ngc6583 (NGC6583 VI magnitudes)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/356/647/ngc6583?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/356/647/ngc6583?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/356/647/ngc6583?GETtext/xml+votable180.050000true273.95053417-22.1829950.0055555555555555566/28803 28806 29064 290662.367228618189496e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/356/647?format=asciiOpticaldefaultJ/MNRAS/356/647/ngc6404NGC6404 VI magnitudesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequential number, within the clustermeta.recordintXposX position (1)pixpos.cartesian.x;instr.detdoubleYposY position (1)pixpos.cartesian.y;instr.detdoubleVmagV magnitudemagphot.mag;em.opt.Vfloate_Vmagrms uncertainty on Vmagmagstat.error;phot.mag;em.opt.VfloatImagI magnitudemagphot.mag;em.opt.Ifloate_Imagrms uncertainty on Imagmagstat.error;phot.mag;em.opt.Ifloat_RAPosition computed from a comparison with UCAC4 (I/322) ({sigma}=0.1'') (right ascension part)degpos.eq.ra;meta.main_DEPosition computed from a comparison with UCAC4 (I/322) ({sigma}=0.1'') (declination part)degpos.eq.dec;meta.mainJ/MNRAS/356/647/ngc6583NGC6583 VI magnitudesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequential number, within the clustermeta.recordintXposX position (1)pixpos.cartesian.x;instr.detdoubleYposY position (1)pixpos.cartesian.y;instr.detdoubleVmagV magnitudemagphot.mag;em.opt.Vfloate_Vmagrms uncertainty on Vmagmagstat.error;phot.mag;em.opt.VfloatImagI magnitudemagphot.mag;em.opt.Ifloate_Imagrms uncertainty on Imagmagstat.error;phot.mag;em.opt.Ifloat_RAPosition computed from a comparison with UCAC4 (I/322) ({sigma}=0.1'') (right ascension part)degpos.eq.ra;meta.mainindexed_DEPosition computed from a comparison with UCAC4 (I/322) ({sigma}=0.1'') (declination part)degpos.eq.dec;meta.mainindexed