Photometric Standard Stars II/50 ivo://CDS.VizieR/II/50 CDS Cousins A.W.J. 2017-07-06T06:26:02Z 2010-08-25T17:51:43Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr two-color-diagrams visible-astronomy Wide-band photometry standard-stars The non-variable stars brighter than 5.0 mag in the equatorial zone between declinations +10{deg} and -10{deg} were adopted by IAU Commission 25 in 1970 as primary standards for the Johnson and Morgan UBV system of 1966. Fainter HR stars in the same zone were chosen as secondary standards. Data for the primary standards are taken from a Cape Royal Observatory Mimeogram and are presented in table2.dat. It gives the weighted mean V magnitudes and B-V colors based upon the best series available up to the end of 1966. The table is believed to provide a consistent UBV system over the southern sky. Most of the secondary standard star data, given in table4.dat, were published in Mon. Notes Astron. Soc. S. Afr. (22,23). 1971ROAn....7....1C https://cdsarc.cds.unistra.fr/viz-bin/cat/II/50 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to II/5A : UBV Photometry of Bright Stars (Johnson+ 1966) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=II/50 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=II/50 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=II/50 https://vizier.cds.unistra.fr/viz-bin/votable?-source=II/50 https://vizier.iucaa.in/viz-bin/votable?-source=II/50 http://vizieridia.saao.ac.za/viz-bin/votable?-source=II/50 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table II/50/ubv (Photometric standard stars) https://vizier.cds.unistra.fr/viz-bin/conesearch/II/50/ubv? https://vizier.iucaa.in/viz-bin/conesearch/II/50/ubv? http://vizieridia.saao.ac.za/viz-bin/conesearch/II/50/ubv? GET text/xml+votable 180.0 50000 true 1.3339206 -5.7076183 0.005555555555555556 6/4 15 26 31 37 41 48 62 63 79 89 90 98 128 129 137 140 155 161 166 4098 4115 4123 4124 4132 4135 4136 4140 4142 4143 4144 4146 4150 4167 4184 4224 4227 4237 4238 4245 4250 4256 8198 8207 8214 8219 8274 8333 8354 12289 12294 12295 12303 12304 12311 12315 12320 12325 12332 12334 12337 12341 12348 12355 12359 12361 12390 12396 12400 12432 12449 12455 12460 12464 12544 16452 16490 16543 16807 16834 16895 16941 16952 16955 16974 16995 17000 17012 17068 17085 17158 17194 17262 17266 17272 17303 17318 17322 17337 17339 17357 17363 17368 17376 17391 17394 17395 17397 17400 17425 17486 17487 17502 17513 17515 17551 17582 17583 17585 17588 17606 17608 17611 17620 17622 17629 17645 17656 17664 17676 17691 17695 17708 17716 17721 17723 17731 17732 17752 17754 17762 17764 17767 17771 17775 17783 17784 17789 17811 17814 17820 17844 17847 17852 17854 17860 17888 17918 17919 17941 17959 17965 17966 17968 17989 17990 18002 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46939 46982 47056 47112 47117 47121 47140 47353 47361 47424 47514 47584 47593 47640 47648 47672 47703 47717 47728 47734 47740 47742 47745 47763 47825 47845 47967 47990 47991 47997 48037 48051 48088 48104 48175 48188 48203 48330 48344 48355 48516 48519 48534 48552 48572 48576 48587 48589 48749 48856 48884 48886 48900 48992 49004 49008 49047 49049 49065 49099 49101 49109 49114 49121 49123 49138 49147 49149 https://cdsarc.cds.unistra.fr/viz-bin/moc/II/50?format=ascii Optical default II/50/ubv Photometric standard stars w_B-V ? Weight on B-V stat.weight float nullable recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int HD HD identifier of the star (Cat. III/135) meta.id;meta.main int m_HD [/] '/' indicates a blend with next HD number meta.code.multip char Vmag ? Magnitude in Johnson V filter mag phot.mag;em.opt.V float nullable u_Vmag [:)] doubtful value (:), variable value ()) meta.code.error char e_Vmag ? Dispersion on Vmag mag stat.error;phot.mag;em.opt.V float nullable w_Vmag ? Weight on Vmag stat.weight float nullable B-V ? Mean Johnson B-V colour index mag phot.color;em.opt.B;em.opt.V float nullable u_B-V [:)] doubtful value (:), variable value ()) meta.code.error;phot.color;em.opt.B char e_B-V ? Dispersion on B-V mag stat.error;phot.color;em.opt.B float nullable U-B ? Mean Johnson U-B colour index mag phot.color;em.opt.U;em.opt.B float nullable u_U-B [:)] doubtful value (:), variable value ()) meta.code.error;phot.color;em.opt.U char w_U-B ? Weight on U-B (quarters assigned) stat.weight float nullable S [CA*] Source of U-B value: C=Cape only, A=Catalina station (Arizona), *=discordant values. meta.ref;phot.color;em.opt.U char Notes Remarks (variable star name, binarity) meta.note char Simbad Simbad column added by the CDS char _RA Right Ascension (J2000) from SIMBAD (not part of the original data) deg pos.eq.ra;meta.main _DE Declination (J2000) from SIMBAD (not part of the original data) deg pos.eq.dec;meta.main