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/catalogs/2/2048/

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II/48       A Reference List for the UBV System     (Nicolet 1976)
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A Reference List for the UBV System
    Nicolet B.
   <Bull. Inf. CDS No. 11, p. 20 (1976)>
   =1976BICDS..11...20N
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ADC_Keywords: Photometry, UBV; References

Description:
    This catalog is a file of 13422 records giving for each star, an
    identification, V, B-V, and U-B. Care was taken to place all
    measurements on the Johnson UBV system by determining possible
    systematic differences between measurements by Johnson and those by
    other observers.

Introduction:
    The list of Johnson et al. (1966) of 4777 stars was considered as
    fundamental and given absolute priority. The differences between these
    data and those for the same stars in other lists in which Johnson was
    a coauthor were used to determine the systematic corrections and the
    dispersions were used to determine the weight for each of these lists.
    Finally, other lists were treated in the same way with absolute
    priority given to those data in the lists with Johnson as a coauthor.

File Summary:
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 FileName     Lrecl  Records   Explanations
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ReadMe           80        .   This file
data.dat         33    13425   The catalogue
nmsys.txt        80      245   Mermilliod numbering system
refs.txt         79       68   References used in 3 step file preparation
                               (table 1 of paper)
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See also:
    II/168 : Catalogue of Homogeneous Means in the UBV System (Mermilliod 1991)

Byte-by-byte Description of file: data.dat
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   Bytes Format  Units   Label    Explanations
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   1- 11  F11.8  ---     ID      *Star identification in Geneva system
      12  A1     ---     m_ID     ID multiplicity suffix
  14- 18  F5.2   mag     Vmag     ? V magnitude
  21- 26  F6.3   mag     B-V      ? B-V Color Index
  28- 33  F6.3   mag     U-B      ? U-B Color Index
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Note on ID:
  see nmsys.txt (Mermilliod, 1973)
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References:
  Hauck B. 1973, in Ch. Fehrenbach and B.E. Westerlund (eds), Spectral
        Classification and Multicolour Photometry, p. 285, D. Reidel, Dordrecht
  Johnson H.L., Mitchell R.I., Iriarte B. and Wisniewski W.Z. 1966, Comm. Lunar
        and Planet. Lab. no. 63
  Lindemann E. and Hauck B. 1973, Astron. Astrophys. Suppl. 11, 119
  Mermilliod J.C. 1973, Rapport interne du CDS 5/1973.
  Mermilliod J.C. and Nicolet B. 1976, in preparation.
  Nicolet B. 1976, Bull. Inf. CDS No. 11, 20.
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(End)                                  Julie Anne Watko [SSDOO/ADC]  10-May-1996