J/A+AS/122/559 J/A+AS/122/559 uvby-beta CCD photometry secondary standard J V Clausen S S Larsen J M Garcia A Gimenez J Storm Astron. Astrophys. Suppl. Ser. 122 559 1997 1997A&AS..122..559C Photometry, standards Photometry, uvby, beta Photometry, Stroemgren astronomical data bases: miscellaneous stars: fundamental parameters stars: general Accurate standard uvby indices are presented for 73 southern B, A, F and G stars in the V magnitude range 8.2 to 10.9. They cover all three transformation regions of the uvby system (Olsen 1983A&AS...54...55O) well. Standard {beta} indices are included for the 55 B, A, and F stars in the sample. Our results provide a useful set of secondary standards for uvby {beta} CCD photometry with southern hemisphere 1-2m class telescopes. A critical comparison with published photometry, in general based on fewer observations, is given.

HD HD (Cat. <III/135>) number --- T uvby transformation region: A (BAF),D (GKV), G (GKIII) --- o_Vmag Number of observations --- Vmag V magnitude mag e_Vmag rms uncertainty on Vmag mag b-y b-y color index mag e_b-y rms uncertainty on b-y mag m1 m1 color index mag e_m1 rms uncertainty on m1 mag c1 c1 color index mag e_c1 rms uncertainty on c1 mag dVmag Standard - transformed V magnitude value 10-3mag db-y Standard - transformed b-y color index value 10-3mag dm1 Standard - transformed m1 color index value 10-3mag dc1 Standard - transformed c1 color index value 10-3mag HD HD number --- T Transformation region --- o_Beta Number of observations --- Beta Beta color index mag e_Beta rms uncertainty on Beta mag dBeta Standard - transformed Beta value 10-3mag HD/CPD HD or CPD name --- ID E-region identification (Cousins & Stoy 1962RGOB...49....3C), --- T uvby (A,D,G) & beta (A,B) transformation regions --- o_Vmag Number of observations in Vmag --- o_b-y Number of observations in uvby --- o_Beta Number of observations in Beta --- Vmag V magnitude mag e_Vmag rms uncertainty on Vmag mag b-y b-y color index mag e_b-y rms uncertainty on b-y mag m1 m1 color index mag e_m1 rms uncertainty on m1 mag c1 c1 color index mag e_c1 rms uncertainty on c1 mag Beta Beta color index mag e_Beta rms uncertainty on Beta mag Patricia Bauer CDS 1996Sep05Jens Viggo Clausen <jvc@astro.ku.dk> J_A+AS_122_559.xml