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J/MNRAS/259/233      Cluster SC2008-57(A3667)                      (Sodre+ 1992)
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The cluster of galaxies SC2008-57(A3667)
     Sodre L., Capelato H.V., Steiner J.E., Proust D., Mazure A.
    <Mon. Not. R. Astron. Soc. 259, 233 (1992)>
    =1992MNRAS.259..233S
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ADC_Keywords: Clusters, galaxy; Photometry; Spectroscopy; Positional data; 
              Magnitudes; Radial velocities
Keywords: catalogues - galaxies: clustering - galaxies: distances and redshifts
          - galaxies: luminosity function, mass function - galaxies: photometry.

Abstract: 
    We present the results of photometric and spectroscopic observations
    of the cluster of galaxies SC2008-57 (A3667). The observations have
    resulted in a catalogue with positions and magnitudes for 203
    galaxies, complete at b_25 = 18.0, and radial velocities for 128
    galaxies, 91 per cent complete at b_25 = 17.5. The cluster can be
    classified as type L because its galaxy distribution is highly
    flattened. It shows two strong concentrations: a main concentration,
    centred on the cluster brightest galaxy (a D galaxy) and coincident
    with the peak of X-ray emission, and a substructure around the second
    brightest galaxy (also a D galaxy). Most of the galaxies in this
    substructure seem to be bound to the second-brightest galaxy, forming
    a dynamical subunit inside the cluster. The extreme flattening of the
    cluster may at least partially be due to the presence of the
    substructure. The cluster also shows evidence for luminosity
    segregation, with the brightest galaxies being preferentially found in
    high galaxy density regions. Most of the luminosity segregation,
    however, is produced by galaxies associated with the two clumps around
    the D galaxies, suggesting that dynamical friction is effective in
    subclusters with low velocity dispersions and may be associated with
    the formation of D galaxies. The velocity dispersion of SC2008-57 is
    high, about 1200 km/s, but consistent with the observed X-ray
    luminosity. The cluster mass, derived using several estimators, is
    about 2.6 x 10^15 M_solar. Both the cluster mass and velocity
    dispersion may be overestimates due to the presence of the
    substructure.


File Summary:
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 FileName        Lrecl       Records    Explanations
--------------------------------------------------------------------------------
ReadMe              80             .    This file
table3              60           203   *Galaxy catalogue of the cluster of
                                         galaxies SC2008-57 (A3667)
t3.tex              80           300   *LaTeX Table 3
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Note on t3.tex:
   In order to execute LaTeX of "t3.tex", a definition file "macros.tex" is
   needed in which at least definitions of \kmsec, \double, \etal are included.

Note on table3:
   Comment from the author (Sodre L.):
   The galaxy numbers in the Table 2 of the paper were not those from the Table
   3. The correct numbers are 065, 086, 087, 097, 100, 120, respectively.
  
Byte-by-byte Description of file: table3
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 Bytes  Format    Unit     Label    Explanation
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  1-  4  I4       ---      N        [1,203]+ galaxy number
  7-  8  I2       h        RAh      [20] right ascension (hours)   (B1950)
 10- 11  I2       min      RAm      [3,13] right ascension (minutes)
 13- 16  F4.1     s        RAs      [0,60] right ascension (seconds)
     18  A1       ---      DE-      [-]! declination sign
 19- 20  I2       deg      DEd      [56,57] declination (degrees)  (B1950)
 22- 23  I2       arcmin   DEm      declination (minutes)
 25- 26  I2       arcsec   DEs      declination (seconds)
 28- 31  I4       arcsec   X        [269,4747] Cartesian coordinate X measured
                                      over the plate
 33- 36  I4       arcsec   Y        [0,5000] Cartesian coordinate Y measured
                                      over the plate
 38- 42  F5.2     mag      b25      isophotal bj magnitude given by pixels
                                      brighter than 25 mag/arcsec^2
     43  A1       ---      u_b25    [:] uncertainty flag of b25 magnitude due to
                                      overlapping
 45- 50  I6       km/s     Vhelio   []? heliocentric radial velocity
     51  A1       ---      u_Vhelio [?] uncertainty flag of Vhelio
 52- 54  I3       km/s     e_Vhelio [0,]? error of Vhelio
     56  A1       ---      r_Vhelio [1-3] code for the reference of Vhelio
                                      See the caption of Table 3 of the paper.
 58- 60  A3       ---      NOTES    [(1-6)] notes on the velocity determination
                                      or on the galaxy identification
                                      See the caption of Table 3 of the paper.
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Historical notes:
    The catalogue was provided by courtesy of L. Sodre to H. Andernach;
    it was numbered A108 in H. Andernach's "List of Astronomical Catalogues
    and Documents kindly provided on request by various authors"
  08-Nov-1993: First archived in J/MNRAS/259/233.
  __-Jan-1994: Amended, removing a supplementary file following the author's
               comment.
  (The date of the latest archive, see the date of each file.)

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(End)                                        Koichi Nakajima [CDS]   04-Nov-1993