J/A+A/381/884ivo://CDS.VizieR/J/A+A/381/884doi:10.26093/cds/vizier.33810884CDSGiorgi E.E.Vazquez R.A.Baume G.Seggewiss W.Will J.-M.2002-02-02T09:22:15Z2002-02-02T10:22:00ZCDS 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-photometryCCD UBVI imaging photometry was carried out in the field of the open cluster NGC 2571. From the analysis of our data we state the cluster is at a distance of 1380+/-130pc and its age is 50+/-10x10^6yr. The cluster mass function has a slope larger than a typical Salpeter's law. There are two notorious features in NGC 2571: the cluster contains a high proportion of stars located below the reference line that are serious candidates to be metallic line stars (probably Am-Fm), and shows also a sharp gap along its main sequence that cannot be explained by a random process nor by a biased rejection of cluster members. A striking blue object was detected in the cluster field that could be a white dwarf candidate. We carried out CCD imaging photometry in the Kron-Cousins UBVI system on April 27 and 29, 1994 using a 1024x1024pix CCD with a scale of 0.37"/pix and a field of view of 6.3'x6.3' attached to the 1.54-m Danish telescope at ESO, La Silla, Chile.2002A&A...381..884Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/381/884CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/381/884https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/381/884http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/381/884https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/381/884https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/381/884http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/381/884GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/381/884/table3 (Photometric data, spectral types and coordinates of all stars observed in the open cluster NGC 2571)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/381/884/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/381/884/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/381/884/table3?GETtext/xml+votable180.050000true124.744486-29.7543650.0055555555555555566/40106https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/381/884?format=asciiOpticalInfrareddefaultJ/A+A/381/884/table3Photometric data, spectral types and coordinates of all stars observed in the open cluster NGC 2571recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequence numbermeta.idintLind? Number in Lindoff (1968ArA.....4..587L) notationmeta.idintnullableClar? Number in Claria (1976PASP...88..225C) notationmeta.idintnullableKil? Number in Kilambi (1978PASP...90..721K) notationmeta.idintnullableSpTypeSpectral Typesrc.spTypecharSpType2Spectral Typesrc.spTypecharr_SpType? Reference number for SpType (1)meta.refintnullabler_SpType2? Reference number for SpType2 (1)meta.refintnullableComCommentsmeta.notecharXposX position (2)pixpos.cartesian.x;instr.detfloatYposY position (2)pixpos.cartesian.y;instr.detfloatVmagV Kron-Cousins magnitude (3)magphot.mag;em.opt.VfloatB-VB-V Kron-Cousins color index (3)magphot.color;em.opt.B;em.opt.VfloatU-B? U-B Kron-Cousins color index (3)magphot.color;em.opt.U;em.opt.BfloatnullableV-I? V-I Kron-Cousins color indexmagphot.color;em.opt.V;em.opt.Ifloatnullable_RAJ2000 Positions computed from (Xpos,Ypos) by VizieR (right ascension part)degpos.eq.ra;meta.main_DEJ2000 Positions computed from (Xpos,Ypos) by VizieR (declination part)degpos.eq.dec;meta.main