A 1.4 GHz source survey

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1990AJ.....99.1071Condon+

J/AJ/99/1071        1.4 GHz source survey (Condon+ 1990)
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A 1.4 GHz source survey in an area without nearby rich galaxy clusters
       Condon J.J., Dickey J.M., Salpeter E.E.
      
      =1990AJ.....99.1071C      (SIMBAD/NED BibCode)
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ADC_Keywords: Radio sources

Abstract:

We report on 1.4GHz continuum observations for 56 contiguous VLA fields, using the D configuration, in a region devoid of nearby, rich galaxy clusters (at z<0.4). 354 continuum sources are tabulated, with fluxes down to about 1.5mJy, in an area of about 12degres^+2^. Only about seven of the 354 radio sources are associated with known rich galaxy clusters at z>0.4 (tabulated by Gunn, Hoessel, and Oke, 1986ApJ...306...30G). We compare source positions with those from an optical catalog (generated from a POSS plate with the use of the Minnesota Automated Plate Scanner) and find mild correlations on angular scales of order 1arcmin. This suggests some association of radio sources with galaxy groups (sizes of order 200 kpc) at redshifts of order z~0.1, even though there are no rich galaxy clusters in this redshift range.

File Summary:
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  FileName        Lrecl  Records   Explanations
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ReadMe             80        .   This file
table2             57      354   Radio sources detected by the VLA.
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Byte-by-byte Description of file: table2
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   Bytes Format Units   Label     Explanations
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   1-  4  A4    ---     Source    Source name
       5  A1    ---   n_Source    ['?] Note on Source (1)
   7-  9  I3    ---     Field     Field whose center is closest to the source
      10  A1    ---   n_Field     [*] Note on Field (2)
      12  I1    h       RAh       Right ascension (1950)
  14- 15  I2    min     RAm       Right ascension (1950)
  17- 20  F4.1  s       RAs       Right ascension (1950)
  22- 23  I2    deg     DEd       Declination (1950)
  25- 26  I2    arcmin  DEm       Declination (1950)
  28- 29  I2    arcsec  DEs       Declination (1950)
  31- 35  F5.1  mJy     Smax      Peak flux at 1.4GHz
  37- 41  F5.1  mJy     Sint      Area integrated flux at 1.4GHz
  43- 46  F4.2  ---     PBC       Primary-beam correction factor (3)
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Note (1): ? : slightly suspect detections
          ' : S_max_ < 2(PBC)S_min
Note (2): * : the source is fairly close to the center of a second field
Note (3): PBC(t)=exp[10.7t^2^ + 25.3t^4^] where t is the distance from the
           source to the field center in degrees.
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History: Prepared via OCR at CDS.
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(End)                      Marie-Jose Wagner,  Patricia Bauer [CDS]  14-Nov-1997