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II/50       Photometric Standard Stars, Magnitudes, Colours (Cousins 1971)
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Photometric Standard Stars; 
Table II: Magnitudes and Colours of Bright Southern Stars; 
Table IV: Magnitudes and Colours of Stars in Equatorial Zone
    Cousins A.W.J.
    <R. Obs. Ann. 7 (1971)>
    =1971ROAn....7....1C
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ADC_Keywords: Colors; Photometry, UBV; Stars, standard

Description:
   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 tblii.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 tbliv.dat, were published in Mon. Notes Astron. Soc. S. Afr. (22,23).

Introduction:
   The formats of tblii.dat and tbliv.dat are the same. The first column 
   includes the HD number. Subsequent columns list mean V magnitude, B-V and 
   U-B color indices, dispersion and total weight of V magnitudes (unit weight
   corresponds to s.e. +_ 0.010 mag), dispersion and total weight of B-V 
   colors (unit weight corresponds to s.e. +- 0.007 mag), the weight of the 
   U-B color, and the source if from one source only. 
     C = measured at Cape only 
     A = measured at Catalina Station, AZ only 
     * = several series are discordant (details are given in table III and
         table V in the printed paper)  

     . after a datum = 0.005 

   Each file contains 2 records of header.

File Summary:
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 FileName       Lrecl  Records   Explanations
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ReadMe             80        .   This file
tblii.dat          88      914   Table II
tbliv.dat          88     1117   Table IV
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Byte-by-byte Description of file: tblii.dat
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   Bytes Format  Units   Label    Explanations
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   1-  n  In     ---     ---      ---
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Byte-by-byte Description of file: tbliv.dat
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   Bytes Format  Units   Label    Explanations
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   1-  n  In     ---     ---      ---
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References:
   Cousins A.W.J. 1963, Mon. Notes Astron. Soc. S. Afr., 22, 58. 
   Cousins A.W.J. 1963, Mon. Notes Astron. Soc. S. Afr., 22, 130.
   Cousins A.W.J. 1964, Mon. Notes Astron. Soc. S. Afr., 23, 10.
   Cousins A.W.J. 1964, Mon. Notes Astron. Soc. S. Afr., 23, 175.
   Cousins A.W.J. 1965, Mon. Notes Astron. Soc. S. Afr., 24, 120.
   Cousins A.W.J. 1971, R. Obs. Ann., 7.
   Mean Magnitudes and Colours of Bright Stars South of +10 deg Declination, 
     1967, Cape Royal Observatory Mimeogram.
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(End)                                  Julie Anne Watko [SSDOO/ADC]  19-DEC-1996