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A VLA Survey of Rich Clusters of Galaxies II [ CATS home ] [ Back to CATS list ] [ ftp ]

1994AuJPh..47..145Slee,Roy & Savage

A VLA Survey of Rich Clusters of Galaxies II. The stronger sources

Abstract

We present detailed radio and optical parameters for the stronger radio sources in 58 Abell cluster fields observed with the Very Large Array (VLA) using scaled arrays at 1.5 and 4.9 GHz. These sources comprize a complete sample with 1.5 GHz flux density greater than or equal to 20 mJy and cover a combined sky area of 3.5 x 10(exp -5) sr. The cluster fields were distributed over 24 h of RA and between declinations +35 deg and -30 deg. Contour maps at two frequencies are presented and source parameters such as position, angular size, spectral index, linear polarization and core flux density are tabulated. We also derive the emitted power and linear size for those sources close to the cluster centers and therefore highly likely to be cluster members. We attempt to identify all these radio sources with optical images on the Palomar and SERC survey plates and give their accurate optical coordinates, morphologies and apparent magnitudes. 
1994AuJPh..47..145Slee, Roy & Savage; A VLA Survey of Rich Clusters
     of Galaxies II. The stronger sources;             (ctsy. A.Roy 4/94)
     (ctsy. A.Roy 4/94)   BEWARE: 1.5/4.9GHz polarization fraction has ranges of values!
        (reformatted final version, 16-Oct-94)
==========================================================================
Table 1. Properties of observed clusters
Abell    RA(1950)DEC  rad_off    D R m_10 BM Rc' Mpc    z     ref lgL_x
----+----1----+----2----+----3----+----4----+----5----+----6----+----7-
A  13    0011.1-1947  2.5  -81.1 2 5 16.6 5  17  1.59  0.0945   6 
==========================================================================

Table 2. Radio source measurements    * = Bandwidth smearing >= 7 arcsec
Cluster Source R.A. (1950) DEC   Map      Ang Dist S_1.5 S_4.9 Spectr. Ellipse Axes Lin. Polaris. lg10  LAS  PTI  References to
Field   Number                  Number     R/Rc                Index  Maj Min PA   1.5GHz 4.9GHz L_1.5 Size Core Other measurements
						   mJy    mJy           "  "  d       %       %   W/Hz  kpc  mJy
----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2----+----3--
A0013.1     000938.97-194042.4             1.30   84.0                 17  3  89
A0013.6abc  001054.51-194647.7 1           0.19    3.85         -2.09  53 20  99                  22.75 140      1,4,29

==========================================================================

Table 3. Measurements of double sources      
#   4.9 GHz measurements; digital data not available at 1.5 GHz
*  Bandwidth smearing >= 7 arc 
Cluster Source  Map          Comp.Flux  Flux  Sp. Index   Component Struct.   Ratio of Comp. Linear
Field   Number  Number       Sa    Sb   Ratio                a          b     Maj.Axes Separ.  Sep.
                             mJy   mJy  Sa/Sb  a    b      " "   d    " "   d    a/b   "    d  kpc
----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----
A0076.5ab     2 *           10.3   9.8  1.05              11  9  93                   29.7  40
A0076.13ab    3,4           79.8  79.0  1.01 -0.97 -0.91  14  7  92  11  7 104  1.27  31.1 105
Column headings :
1,2  The cluster field and source number as listed by SPS89.     
3    Contour map number within Figure 1.
4,5  The 1.5 GHz flux densities of the components.     
6.   Ratio of the flux densities of the components.
7,8  Spectral indices of the components between 1.5 & 4.9 GHz.     
9,10 Deconvolved ellipse axes and position angles (from north through east) of the components.      
11   Ratio of the major axes of the components. 
12   Angular separation of the components and its position angle ( from north through east). 
13   Linear separation of the components of doubles with redshifts (qo=0.5, Ho = 75km/s/Mpc)."

==========================================================================
Table 4.    Measurements of triple sources  
*   Bandwidth smearing >= 7 arcsec
Cluster Source   Map    Component Flux Density           Gaussian-fit Ellipses            Component Separations
Field   Number  Number    Sa       Sb      Sc         a              b         c        a - b       b - c      a - c
                          mJy      mJy    mJy      "  " deg     "  " deg     "  " deg   "   deg    "   deg     "  deg
 (1)     (2)     (3)       (4)    (5)     (6)        (7)            (8)      (9)            (10)    (11)      (12) 
----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+--
A  13   6abc      1        1.83    1.36    0.74   32 11 120    9  3   8                37.9 104   20.3 130   21.6  79

==========================================================================

Table 5. Optical identifications   
Cluster Source Radio Centroid   Optical Position EF Ang. PA m_app m_app Ty z_hel Reference(s)
Field Source  RA (B1950) Dec.    RA (B1950)Dec.  ID Dist    PSSE   SRC Morph     to the redshift z
      Number  h m s   d  '  "   h m  s    d ' "      "   d    R    B_J      z
 (1)   (2)    (3)       (4)      (5)       (6)      (7) (8)   (9) (10) (11) (12)  (13)    
----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----
A0013.1     000938.97-194042.4                    EF