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J/A+AS/128/67       BVR photometry of Abell 85           (Slezak+ 1998)
A photometric catalogue of galaxies in the cluster Abell 85
     Slezak E., Durret F., Guibert J., Lobo C.
    <Astron. Astrophys. Suppl. Ser. 128, 67 (1998)>
    =1998A&AS..128...67S
ADC_Keywords: Clusters, galaxy ; Galaxies, photometry

Keywords: Galaxies: clusters: individual: ABCG 85; galaxies: photometry


Abstract:
    We present two catalogues of galaxies in the direction of the rich
    cluster ABCG 85. The first one includes 4232 galaxies located in a
    region ±1° from the cluster centre. It has been obtained from a
    list of more than 25000 galaxy candidates detected by scanning a
    Schmidt photographic plate taken in the BJ band. Positions are very
    accurate in this catalogue but magnitudes are not. This led us to
    perform CCD imaging observations in the V and R bands to calibrate
    these photographic magnitudes. A second catalogue (805 galaxies) gives
    a list of galaxies with CCD magnitudes in the V and R bands for a much
    smaller region in the centre of the cluster. These two catalogues will
    be combined with a redshift catalogue of 509 galaxies by Durret et al.
    (1997, subm.) to investigate the cluster properties at optical
    wavelengths Durret et al. (1997, subm.), as a complement to our
    previous X-ray studies (Pislar et al., 1997A&A...322...53P; Lima-Neto
    et al., 1997A&A...327...81L).

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat       100     4232   Catalogue of 4232 galaxies from the
                               SERC-J 681 blue plate
table2.dat        73      805   Catalogue of 805 galaxies measured from CCD data


See also:
    J/A+AS/129/281 : ABCG 85 velocities catalogue (Durret+ 1998)


Byte-by-byte Description of file: table1.dat

   Bytes Format Units   Label   Explanations

   2-  5  I4    ---     No      Running number in the catalogue
   8-  9  I2    h       RAh     Right ascension of the object (equinox J2000.0)
  11- 12  I2    min     RAm     Right ascension of the object (equinox J2000.0)
  14- 18  F5.2  s       RAs     Right ascension of the object (equinox J2000.0)
      20  A1    ---     DE-     Declination sign
  21- 22  I2    deg     DEd     Declination of the object (equinox J2000.0)
  24- 25  I2    arcmin  DEm     Declination of the object (equinox J2000.0)
  27- 30  F4.1  arcsec  DEs     Declination of the object (equinox J2000.0)
  33- 36  F4.2  ---     eps     Ellipticity defined as sqrt([1-(b\a)]2)
  39- 41  I3    deg     PA      position angle of the major axis
                                 (from North to East)
  45- 49  F5.2  mag     BJmag   BJ magnitude
  51- 55  F5.2  mag     Vmag    V magnitude
  57- 61  F5.2  mag     Rmag    R magnitude
  64- 70  F7.1  arcsec  Xpos    X position  (1)
  72- 78  F7.1  arcsec  Ypos    Y position (1)
  83- 87  A5    ---     Name1   Cross-identifications with the list by
                                 Malumuth et al. (1992AJ....104..495M)
  90- 93  A4    ---     Name2   Cross-identifications with the list by
                                 Beers et al. (1991AJ....102.1581B)
  96-100  A5    ---     Name3   Cross-identifications with the list by
                                 Murphy (1984, Cat. J/MNRAS/211/637)

Note (1): Position relative to the centre defined as that of the diffuse
     X-ray emission of the cluster (see text)


Byte-by-byte Description of file: table2.dat

   Bytes Format Units   Label   Explanations

   2-  4  I3    ---     No      Running number in the catalogue
   6-  7  I2    h       RAh     Right ascension of the object (equinox J2000.0)
   9- 10  I2    min     RAm     Right ascension of the object (equinox J2000.0)
  12- 16  F5.2  s       RAs     Right ascension of the object (equinox J2000.0)
      18  A1    ---     DE-     Declination sign
  19- 20  I2    deg     DEd     Declination of the object (equinox J2000.0)
  22- 23  I2    arcmin  DEm     Declination of the object (equinox J2000.0)
  25- 28  F4.1  arcsec  DEs     Declination of the object (equinox J2000.0)
  32- 34  F3.1  arcsec  Rad     Isophotal radius
  36- 39  F4.2  ---     eps     Ellipticity e defined as sqrt([1-(b/a)]2)
  41- 43  I3    deg     PA      [-89/111] Position angle of the major axis
                                 (anticlockwise from North)
  47- 51  F5.2  mag     Vmag    ? V magnitude
  53- 57  F5.2  mag     Rmag    R magnitude
  60- 65  F6.1  arcsec  Xpos    X position  (1)
  68- 73  F6.1  arcsec  Ypos    Y position  (1)

Note (1): Positon relative to the centre assumed to have coordinates:
          00:41:51.90-09:18:17.0 (equinox J2000.0);
     this centre was chosen to coincide with that of the diffuse X-ray
     gas component as defined by Pislar et al. (1997A&A...322...53P).


Acknowledgements: Eric Slezak, 


References:
   Durret, Felenbok, Lobo, S 1997, A&AS, submitted
(End)                                         Patricia Bauer [CDS]   13-Jun-1997