Individual files can be fetched (via http) from here
or via ftp from: ftp://cdsarc.u-strasbg.fr/pub/cats/J/A+AS/111/75

The catalogue can be queried from: http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=J/A+AS/111/75

This standardized document follows the rules of the Standard Description for Astronomical Catalogues. For those having to work on this catalogue using FORTRAN programs, this ReadMe file can be transformed into a f77-compliant program which reads the files making up this catalogue, in two versions: either a f77 program loading whole files into arrays, or a f77-program reading each data file line by line.

J/A+AS/111/75             UBVRI CCD photometry of NGC 4755        (Sagar+, 1995)
================================================================================
A deep UBVRI CCD photometric study of the moderately young southern open
star cluster NGC 4755 = {kappa} Crucis
      SAGAR R., CANNON R.D.
      <Astron. Astrophys. Suppl. Ser. 111, 75 (1995)>
      =1995A&AS..111...75S      (SIMBAD/NED Reference)
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ADC_Keywords: Clusters, open; Photometry, CCD; Photometry, UBVRI

Keywords: stars: formation - HR diagram -
          open clusters and associations: individual: NGC 4755

Description:
   CCD observations in U, B, V, R and I passbands have been used to generate
   (U-B), (B-V) colour-colour and deep V, (B-V); V, (U-B) and V, (V-I)
   colour-magnitude diagrams for the young open cluster NGC 4755. The sample
   consists of 813 stars reaching down to V about 20mag.

File Summary:

       FileName      Lrecl  Records   Explanations

× ReadMe            80        .   This file
× table4            72      813   UBVRI photometry


Byte-by-byte Description of file: table4

   Bytes Format  Units   Label    Explanations

       1  I1     ---     Region   [1-2] Region number (1)
   3-  5  I3     ---     No       star number
   7- 12  F6.2   pix     X        X coordinate
  14- 19  F6.2   pix     Y        Y coordinate
  21- 25  F5.2   mag     Vmag     V magnitude
  27- 31  F5.2   mag     U-B      []? U-B colour
  33- 36  F4.2   mag     B-V      []? B-V colour
  38- 41  F4.2   mag     V-R      []? V-R colour
  43- 46  F4.2   mag     V-I      []? V-I colour
      48  I1     ---     o_Umag   []? Number of observations in U
      50  I1     ---     o_Bmag   []? Number of observations in B
      52  I1     ---     o_Vmag   Number of observations in V
      54  I1     ---     o_Rmag   []? Number of observations in R
      56  I1     ---     o_Imag   []? Number of observations in I
  58- 71  A14    ---   OtherName  Cross identification of stars. (2)

Note (1): The center of Region 1 is located ~3.2 arcmin south-west while
    that of Region 2 ~3.5 arcmin north-east to the cluster center marked
    by Dachs & Kaiser (1984).
Note (2): Stars observed by Arp & van Sant (1958) and Dachs & Kaiser (1984)
    in the photoelectric and photographic system have been prefixed with AV
    and DK respectively. The candidates for pre-main sequence stars are
    identified as PMS in the last column.


References:
   Arp H.C., van Sant C.T., 1958, AJ, 63, 341
   Dachs J., Kaiser D., 1984, A&AS, 58, 411
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(End)                                           Patricia Bauer [CDS] 06-Jan-1995