J/A+A/445/493ivo://CDS.VizieR/J/A+A/445/493doi:10.26093/cds/vizier.34450493CDSMoitinho A.Carraro G.Baume G.Vazquez R.A.2012-09-24T07:14:45Z2006-01-16T21:58:43ZCDS support team

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

cds-question@unistra.fropen-star-clustersinfrared-photometryvisible-astronomyWide-band photometryccd-photometryWe analyse CCD broad band (UBV(RI)c) photometric data obtained in the fields of the poorly studied open clusters NGC 2425 and NGC 2635. Both clusters are found to be of intermediate age thus increasing the population of open clusters known to be of the age of, or older than, the Hyades. More explicitly, we find that NGC 2425 is a 2.2Gyr old cluster, probably of solar metallicity, located at 3.5kpc from the Sun. NGC 2635 is a Hyades age (600Myr) cluster located at a distance of 4.0kpc from the Sun. Its Colour Magnitude Diagram reveals that it is extremely metal poor for its age and position, thus making it a very interesting object in the context of Galactic Disk chemical evolution models.2006A&A...445..493Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/445/493CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/417/961 : UBV(RI)c photometry of NGC 2580 and NGC 2588 (Baume+, 2004)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/445/493https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/445/493http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/445/493https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/445/493https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/445/493http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/445/493GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/445/493/table2 (Photometric catalogue of the NGC 2425 region)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/445/493/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/445/493/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/445/493/table2?GETtext/xml+votable180.050000true114.487917-14.8737780.005555555555555556Cone search capability for table J/A+A/445/493/table3 (Photometric catalogue of the NGC 2635 region)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/445/493/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/445/493/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/445/493/table3?GETtext/xml+votable180.050000true129.689583-34.8596110.0055555555555555566/21529 400642.367228618189496e-19 6.118840631666147e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/445/493?format=asciiOpticalInfrareddefaultJ/A+A/445/493/table2Photometric catalogue of the NGC 2425 regionrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequential number (this work) in the regionmeta.recordintXposX position in CCD pixelspixpos.cartesian.x;instr.detfloatYposY position in CCD pixelspixpos.cartesian.y;instr.detfloatRA2000Right Ascension (2000)pos.eq.ra;meta.mainDE2000Declination (2000)pos.eq.dec;meta.mainUmag? U magnitudemagphot.mag;em.opt.Ufloatnullablee_Umag? Error in Umagmagstat.error;phot.mag;em.opt.UfloatnullableBmag? B magnitudemagphot.mag;em.opt.Bfloatnullablee_Bmag? Error in Bmagmagstat.error;phot.mag;em.opt.BfloatnullableVmagV magnitudemagphot.mag;em.opt.Vfloate_VmagError in Vmagmagstat.error;phot.mag;em.opt.VfloatRcmag? Cousins R magnitudemagphot.mag;em.opt.Rfloatnullablee_Rcmag? Error in Rcmagmagstat.error;phot.mag;em.opt.RfloatnullableIcmag? Cousins I magnitudemagphot.mag;em.opt.Ifloatnullablee_Icmag? Error in Icmagmagstat.error;phot.mag;em.opt.Ifloatnullable_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/A+A/445/493/table3Photometric catalogue of the NGC 2635 regionrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequential number (this work) in the regionmeta.recordintXposX position in CCD pixelspixpos.cartesian.x;instr.detfloatYposY position in CCD pixelspixpos.cartesian.y;instr.detfloatRA2000Right Ascension (2000)pos.eq.ra;meta.mainDE2000Declination (2000)pos.eq.dec;meta.mainUmag? U magnitudemagphot.mag;em.opt.Ufloatnullablee_Umag? Error in Umagmagstat.error;phot.mag;em.opt.UfloatnullableBmag? B magnitudemagphot.mag;em.opt.Bfloatnullablee_Bmag? Error in Bmagmagstat.error;phot.mag;em.opt.BfloatnullableVmagV magnitudemagphot.mag;em.opt.Vfloate_VmagError in Vmagmagstat.error;phot.mag;em.opt.VfloatRcmag? Cousins R magnitudemagphot.mag;em.opt.Rfloatnullablee_Rcmag? Error in Rcmagmagstat.error;phot.mag;em.opt.RfloatnullableIcmag? Cousins I magnitudemagphot.mag;em.opt.Ifloatnullablee_Icmag? Error in Icmagmagstat.error;phot.mag;em.opt.IfloatnullableMemb? Membership assignment, only table3 (1)meta.code.memberchar_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