J/PASP/106/967ivo://CDS.VizieR/J/PASP/106/967doi:10.26093/cds/vizier.61060967CDSJoergensen Inger2025-09-09T14:11:56Z1997-12-09T21:46:13ZCDS support team

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

cds-question@unistra.frphotometric-standard-starsphotometric-systemsvisible-astronomybroad-band-photometryCCD photometry is presented for 119 stars observed in the Thuan-Gunn photometric system (the passbands vgr). The sample includes 82 stars for which magnitudes in this system have not previously been published. Photometry in the Johnson-Kron-Cousins photometric system (BV or UBV) has been obtained for a sub-sample of 85 of the stars. Of those stars which are not primary standard stars for the Thuan-Gunn system 70 observed in Gunn r, 48 observed in Gunn g, and 37 observed in Gunn v have sufficient repeat measurements that they may be used as secondary standard stars for CCD photometry. The typical uncertain- ties for the magnitudes of these stars are 0.006 mag.1994PASP..106..967Jhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/PASP/106/967CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/PASP/106/967https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/PASP/106/967http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/PASP/106/967https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/PASP/106/967https://vizier.iucaa.in/viz-bin/votable?-source=J/PASP/106/967http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/PASP/106/967GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/PASP/106/967/table6Standard magnitudesv?Magnitude in Gunn vmagphot.mag;em.opt.VfloatName*Name of starmeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintVmag?Magnitude in Johnson Vmagphot.mag;em.opt.Vfloate_Vmag?Mean error on magnitude in Johnson Vmagstat.errorfloato_Vmag?Number of observations in Johnson Vmeta.numberintB-V?B-V, Johnson systemmagphot.color;em.opt.B;em.opt.Vfloate_B-V?Mean error on B-Vmagstat.errorfloato_B-V?Number of observations for B-Vmeta.numberintU-B?U-B, Johnson systemmagphot.color;em.opt.U;em.opt.Bfloate_U-B?Mean error on U-Bmagstat.errorfloato_U-B?Number of observations for U-Bmeta.numberintr?Magnitude in Gunn rmagphot.mag;em.opt.Rfloate_r?Mean error on magnitude in Gunn rmagstat.errorfloato_r?Number of observations in Gunn rmeta.numberintg?Magnitude in Gunn gmagphot.mag;em.opt.Rfloate_g?Mean error on magnitude in Gunn gmagstat.errorfloato_g?Number of observations in Gunn gmeta.numberinte_v?Mean error on magnitude in Gunn vmagstat.errorfloato_v?Number of observations in Gunn vmeta.numberint