J/A+A/360/529ivo://CDS.VizieR/J/A+A/360/529doi:10.26093/cds/vizier.33600529CDSPiatti A.E.Claria J.J.Bica E.2006-09-10T16:50:37Z2006-09-10T16:46:45ZCDS support team

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

cds-question@unistra.fropen-star-clustersccd-photometryinfrared-photometryvisible-astronomybroad-band-photometryWe present CCD observations in the B, V, and I passbands obtained for stars in the fields of the open clusters Pismis 22, NGC 6178, NGC 6216, and Ruprecht 130, projected not far from the Galactic centre (|l|<30{deg}, |b|<2{deg}). The sample consists of about 790 stars reaching down to V~18-19mag. From the analysis of the colour magnitude diagrams, we confirmed the physical reality of the clusters and derived their reddening, distance and age. In addition, we obtained flux-calibrated integrated spectra in the range 3500-9200{AA} for the cluster sample. The equivalent widths of the Balmer lines provided us with age estimates, while the comparison with template spectra allowed us to derive both foreground reddening and age. The photometric and spectroscopic results reveal that the four studied objects are young open clusters with ages ranging between 35 and 50Myr. The clusters, located between 1.0kpc and 4.3kpc from the Sun, are affected by different amounts of interstellar visual absorption (0.6=~A_v_=~6.0).2000A&A...360..529Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/360/529CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/370/931 : Melotte 105, Hogg 15, Pismis 21, Ruprecht 140 (Piatti+, 2001)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/360/529https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/360/529http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/360/529https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/360/529https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/360/529http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/360/529GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/360/529/table3 (Pismis 22 field magnitudes and colours of stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/360/529/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/360/529/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/360/529/table3?GETtext/xml+votable180.050000true243.5628631-51.85269860.005555555555555556Cone search capability for table J/A+A/360/529/table4 (NGC 6178 field magnitudes and colours of stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/360/529/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/360/529/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/360/529/table4?GETtext/xml+votable180.050000true248.99826389-45.626857220.005555555555555556Cone search capability for table J/A+A/360/529/table5 (NGC 6216 field magnitudes and colours of stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/360/529/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/360/529/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/360/529/table5?GETtext/xml+votable180.050000true252.37470417-44.735714440.005555555555555556Cone search capability for table J/A+A/360/529/table6a (Ruprecht 130 BVI magnitudes and colours of stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/360/529/table6a?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/360/529/table6a?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/360/529/table6a?GETtext/xml+votable180.050000true266.92403222-30.100992780.005555555555555556Cone search capability for table J/A+A/360/529/table6b (Ruprecht 130 VI magnitudes and colours of stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/360/529/table6b?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/360/529/table6b?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/360/529/table6b?GETtext/xml+votable180.050000true266.92366639-30.086601670.0055555555555555566/28825 42170 42227 42378https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/360/529?format=asciiOpticalInfrareddefaultJ/A+A/360/529/table3Pismis 22 field magnitudes and colours of starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqRunning numbermeta.id;meta.maincharXposX coordinate (1)pixpos.cartesian.x;instr.detfloatYposY coordinate (1)pixpos.cartesian.y;instr.detfloatVmagV magnitudemagphot.mag;em.opt.Vfloate_VmagV errormagstat.error;phot.mag;em.opt.VfloatB-VB-V colour indexmagphot.color;em.opt.B;em.opt.Vfloate_B-VB-V errormagstat.error;phot.color;em.opt.BfloatV-IV-I colour indexmagphot.color;em.opt.V;em.opt.Ifloate_V-IV-I colour indexmagstat.error;phot.color;em.opt.Vfloato_VmagNumber of measurementsmeta.numberint_RAPosition computed from a comparison with UCAC2 (I/289) ({sigma}=0.11'') (right ascension part)degpos.eq.ra;meta.main_DEPosition computed from a comparison with UCAC2 (I/289) ({sigma}=0.11'') (declination part)degpos.eq.dec;meta.mainJ/A+A/360/529/table4NGC 6178 field magnitudes and colours of starse_B-VB-V errormagstat.error;phot.color;em.opt.BfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqRunning numbermeta.id;meta.maincharXposX coordinate (1)pixpos.cartesian.x;instr.detfloatYposY coordinate (1)pixpos.cartesian.y;instr.detfloatVmagV magnitudemagphot.mag;em.opt.Vfloate_VmagV errormagstat.error;phot.mag;em.opt.VfloatB-VB-V colour indexmagphot.color;em.opt.B;em.opt.VfloatV-IV-I colour indexmagphot.color;em.opt.V;em.opt.Ifloate_V-IV-I colour indexmagstat.error;phot.color;em.opt.Vfloato_VmagNumber of measurementsmeta.numberint_RAPosition computed from a comparison with UCAC2 (I/289) ({sigma}=0.06'') (right ascension part)degpos.eq.ra;meta.main_DEPosition computed from a comparison with UCAC2 (I/289) ({sigma}=0.06'') (declination part)degpos.eq.dec;meta.mainJ/A+A/360/529/table5NGC 6216 field magnitudes and colours of starse_B-VB-V errormagstat.error;phot.color;em.opt.BfloatV-IV-I colour indexmagphot.color;em.opt.V;em.opt.IfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqRunning numbermeta.id;meta.maincharXposX coordinate (1)pixpos.cartesian.x;instr.detfloatYposY coordinate (1)pixpos.cartesian.y;instr.detfloatVmagV magnitudemagphot.mag;em.opt.Vfloate_VmagV errormagstat.error;phot.mag;em.opt.VfloatB-VB-V colour indexmagphot.color;em.opt.B;em.opt.Vfloate_V-IV-I colour indexmagstat.error;phot.color;em.opt.Vfloato_VmagNumber of measurementsmeta.numberint_RAPosition computed from a comparison with CAC2 (I/289) ({sigma}=0.04'') (right ascension part)degpos.eq.ra;meta.main_DEPosition computed from a comparison with CAC2 (I/289) ({sigma}=0.04'') (declination part)degpos.eq.dec;meta.mainJ/A+A/360/529/table6aRuprecht 130 BVI magnitudes and colours of starsSeqRunning numbermeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintXposX coordinate (1)pixpos.cartesian.x;instr.detfloatYposY coordinate (1)pixpos.cartesian.y;instr.detfloatVmagV magnitudemagphot.mag;em.opt.Vfloate_VmagV errormagstat.error;phot.mag;em.opt.VfloatB-VB-V colour indexmagphot.color;em.opt.B;em.opt.Vfloate_B-VB-V errormagstat.error;phot.color;em.opt.BfloatV-IV-I colour indexmagphot.color;em.opt.V;em.opt.Ifloate_V-IV-I colour indexmagstat.error;phot.color;em.opt.Vfloato_VmagNumber of measurementsmeta.numberint_RAPosition computed from a comparison with UCAC2 (I/289) ({sigma}=0.03'') (right ascension part)degpos.eq.ra;meta.main_DEPosition computed from a comparison with UCAC2 (I/289) ({sigma}=0.03'') (declination part)degpos.eq.dec;meta.mainJ/A+A/360/529/table6bRuprecht 130 VI magnitudes and colours of starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqRunning numbermeta.id;meta.maincharXposX coordinate (1)pixpos.cartesian.x;instr.detfloatYposY coordinate (1)pixpos.cartesian.y;instr.detfloatVmagV magnitudemagphot.mag;em.opt.Vfloate_VmagV errormagstat.error;phot.mag;em.opt.VfloatV-IV-I colourmagphot.color;em.opt.V;em.opt.Ifloate_V-IV-I errormagstat.error;phot.color;em.opt.Vfloato_VmagNumber of measurementsmeta.numberint_RAPosition computed from a comparison with UCAC2 (I/289) ({sigma}=0.03'') (right ascension part)degpos.eq.ra;meta.main_DEPosition computed from a comparison with UCAC2 (I/289) ({sigma}=0.03'') (declination part)degpos.eq.dec;meta.main