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J/A+AS/115/297    BVRI photometry of Central Field of ω Cen (Lynga+, 1996)
The central field of Omega Centauri
     Lynga G.
    <Astron. Astrophys. Suppl. Ser. 115, 297 (1996)>
    =1996A&AS..115..297L
ADC_Keywords: Clusters, globular ; Photometry, BVRI

Keywords: globular cluster: Omega Cen - stars: horizontal branch -
          blue stragglers, HR diagram

Description:
    This is a four colour photometric study of stars in the central part
    of the globular cluster ω Centauri. The observations were made
    at Siding Spring Observatory in April 1992 with the 1m ANU telesecope;
    a 1024x1024CCD has been used. The photometry was reduced to the BVRI
    system using standards by Landolt

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table4.dat        77       61   Bright stars in the centre of ω Centauri (V<12)
table5.dat        77       59   Blue stars in the centre of ω Centauri;
                          B-V≤0.1; if B not measured: V-R≤0.2
                          and V-I confirming blue colour
catalog.dat       77     3518   BVRI photometry and equatorial positions
                          for stars in the centre of ω Centauri


Byte-by-byte Description of file: table4.dat table5.dat catalog.dat

   Bytes Format  Units   Label   Explanations

   1-  4  I4     ---     Id      Identification number (1)
   7-  8  I2     h       RAh     Right ascension (J2000)
  10- 11  I2     min     RAm     Right ascension (J2000)
  13- 16  F4.1   s       RAs     Right ascension (J2000)
      19  A1     ---     DE-     Declination sign
  20- 21  I2     deg     DEd     Declination (J2000)
  23- 24  I2     arcmin  DEm     Declination (J2000)
  26- 27  I2     arcsec  DEs     Declination (J2000)
  30- 34  F5.2   mag     Vmag    V magnitude
  36- 39  F4.2   mag     e_Vmag  Error on V magnitude
  41- 45  F5.2   mag     B-V     ? B-V colour index
  47- 50  F4.2   mag     e_B-V   ? Error on B-V
  53- 56  F4.2   mag     V-R     ? V-R colour index
  58- 61  F4.2   mag     e_V-R   ? Error on V-R
  63- 67  F5.2   mag     V-I     ? V-I colour index
  69- 72  F4.2   mag     e_V-I   ? Error on V-I
  75- 77  I3     arcsec  Dist    Distance from the centre of the cluster
                                 as defined in the paper (13:26:46.8-47:28:47)

Note (1): No. 1466 and 2073 coincide with UIT-1 and UIT-2
          (Landsman et al., 1992)


References:
  Landsman W.B et al. 1992 Bull. American Astron. Soc., 24, 1294,
    =1992BAAS...24R1294L
(End)                                             Simona Mei [CDS]   01-Aug-1995