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II/8                Catalogue of UVBGRI measurements  (Nicollier 1975)
Catalogue of UVBGRI (Stebbins and Withford) measurements:
Published data and Weighted Means
     Nicollier C.
    <Rapport Interne CDS 2, updated (1975)>
ADC_Keywords: Photometry, UVBGRI ;


Description:
    This compilation contains the published results and the weighted
    means of the observations in the photoelectric photometric system
    described by Stebbins and Withford (1943).

    The six filters were selected to give nearly the same response
    in each of the six spectral regions for a solar-type star.
    The mean wavelengths or the filters are:
       ----------------------------------------------------
           Filter         U     B     V     G     R      I
       Wavelength (nm)   353   422   488   570   719   1030
       ----------------------------------------------------
    The reduction of this system is made in order that
    (B+G+R) = 0.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
mean              64     1297   Mean photometric colours
obs               64     1702   Published Measurements
refs              71       44   References of observations
codes             66      178   Description of LID identification system


Byte-by-byte Description of file: mean obs

   Bytes Format  Units   Label    Explanations

   1- 11  A11    ---     LID      Identification in Lausanne/Geneve system (1)
      12  A1     ---     m_LID    [D12] Multiplicity indicator (1)
  14- 18  F5.2   mag     Umag     ? Colour in Ultra filter (2)
  21- 25  F5.2   mag     Vmag     ? Colour in Violet filter (2)
  28- 32  F5.2   mag     Bmag     Colour in Blue filter (2)
  35- 39  F5.2   mag     Gmag     Colour in Green filter (2)
  42- 46  F5.2   mag     Rmag     Colour in Red filter (2)
  49- 53  F5.2   mag     Imag     Colour in Infra filter (2)
      55  A1     ---     n_Nmes   [/*] '/' indicates an unknown Nmes value,
                                   '*' that Nmes represents a minimal value. (3)
  57- 58  I2     ---     Nmes     ? Number of measurements (3)
  60- 64  I5     ---     r_UBVRI  [6001/6026]? Reference (see file refs) (3)

Note (1): Keys to the code are described in file "codes";
    'D' in column m_LID indicates a double star with both components
        measured simultaneously;
    '1' and '2' in column m_LID indicates components of a composite
        system.
Note (2): See Decription above; the colours are such that (B+G+R) = 0.

Note (3): Values only for "obs" file.



Byte-by-byte Description of file: refs

   Bytes Format  Units   Label    Explanations

   1-  5  I5     ---     RefNo    [6001/6026]+= Reference number
   7-  9  A3     ---     Kron     The parenthesized letter indicates a
                                    reference in Kron et al. (1972)
  12- 71  A60    ---     Text     Text of reference


See also:
  II/75 : R and I magnitudes compiled by Jasniewicz (1982)
  GCPD/06 : General Catalogue of Photometric Data, system #06


References:
  Jasniewicz B., 1982, A&AS 49, 99 (Catalogue: II/75)
  Kron G.E., Guetter H.H., Riepe B.Y., 1972, Publ. U.S. Naval Obs. 20, part 5.
  Stebbins J., Withford A.E., 1943, ApJ 98, 20

Historical Notes:
  * July 1975: Magnetic tape with data provided to CDS by M. Mermilliod
    (Lausanne/Geneva Observatory)
  * September 1995: documentation produced at CDS
(End)                                     Francois Ochsenbein [CDS]  12-Sep-1995