Astronomical Data Center

ADCADC/CDS Standard Document for Catalog:
/journal_tables/PASP/106/828/

The following is the "ReadMe" document that describes this ADC catalog. You can access the files described here in three ways:

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J/PASP/106/828      BVRI photometry of Omega Cen    (Walker 1994)
================================================================================
BVRI photometry of the omega Centauri Hubble Space Telescope calibration field
     Walker A.R.
    <Publ. Astron. Soc. Pac. 106, 828 (1994)>
    =1994PASP..106..828W      (SIMBAD/NED BibCode)
================================================================================
ADC_Keywords: Photometry, CCD ; Clusters, globular

Abstract:
    BVRI photometry is given for stars in the omega Centauri
    (= NGC 5139 = C 1323-472) calibration field for the Wide
    Field/Planetary Camera of the Hubble Space Telescope.

Objects:
    ----------------------------------------------------------
       RA  (2000)  DE      Designation(s)
    ----------------------------------------------------------
    13 26 46    -47 28.6   omega Cen = NGC 5139 = C 1323-472
    ----------------------------------------------------------

File Summary:
--------------------------------------------------------------------------------
  FileName      Lrecl  Records   Explanations
--------------------------------------------------------------------------------
ReadMe             80        .   This file
table4.dat         43       36   Photometry for the HST Calibration Stars
table5.dat         50      193   Photometry of all stars measured in the
                                  calibration field
--------------------------------------------------------------------------------

See also:
   J/AJ/105/1196 : HST WF/PC photometric calibration (Harris+, 1993)

Byte-by-byte Description of file: table4.dat, table5.dat
--------------------------------------------------------------------------------
   Bytes Format Units   Label     Explanations
--------------------------------------------------------------------------------
   1-  4  I4    ---     Star      Star designation (Harris et al., 1993,
                                   Cat. <J/AJ/105/1196>
   6- 10  F5.1  pix     Xpos      ? X position (1)
  12- 16  F5.1  pix     Ypos      ? Y position (1)
  18- 23  F6.3  mag     Vmag      ? V magnitude
  25- 29  F5.3  mag     B-V       ? B-V colour index
  31- 35  F5.3  mag     V-R       ? V-R colour index
      36  A1    ---   u_V-R       Uncertainty flag on V-R
  38- 42  F5.3  mag     V-I       ? V-I colour index
      43  A1    ---   u_V-I       Uncertainty flag on V-I
  45- 50  F6.3  mag     Imag      ? I magnitude
--------------------------------------------------------------------------------
Note (1): Center near 13h 25m 37s, -47{deg} 35' 38" (J2000).
          1 pix = 0.38arcsec. North is left, East is down.
--------------------------------------------------------------------------------

History: Prepared via OCR at CDS.
================================================================================
(End)                           James Marcout, Patricia Bauer [CDS]  25-Mar-1997
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