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J/other/PASAu/10.310  Parkes-Tidbinbilla radio sources (Duncan+ 1993)
A survey of 526 southern flat-spectrum radio sources
with the Parkes-Tidbinbilla interferometer
       Duncan R.A., White G.L., Wark R., Reynolds J.E., Jauncey D.L.,
       Norris R.P., Taaffe L., Savage A.
      <Proc. Astron. Soc. Australia, 10, 310 (1993)>
      =1993PASAu..10..310D      (SIMBAD/NED BibCode)
ADC_Keywords: Radio sources ; Interferometry


Abstract:
    We have measured the 2.3GHz total and correlated flux densities on a
    baseline of 275km of all sources in the Parkes catalogue which :
    (i) are south of declination +10deg,
    (ii) have a catalogued 2.7GHz total flux density exceeding 0.5Jy, and
    (iii) have a 2.7/5.0GHz spectral index flatter than -0.5.
    More than 14% of the sample showed visibility amplitudes greater than
    0.9, and more than 72% showed visibility amplitudes greater than 0.5.
    Of the sources with optical or other identifications 79% were quasars.
    In this paper we briefly summarise the results of this survey.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat        50      526   Optical attributes and total and correlated
                                  flux densities of 526 sources


See also:
   VIII/15 : Parkes Radio Sources Catalogue (PKSCAT90) (Wright+ 1990)


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

   Bytes Format Units   Label     Explanations

   1-  8  A8    ---     Name      Source name (B1950)
  10- 12  A3    ---     ID        Optical identification (1)
  14- 17  F4.1  mag     mag       ? Optical magnitude
  20- 24  F5.3  ---     z         ? Redshift
  26- 27  I2    ---   o_S2.7GHzc  Number of independent observations of S2.7GHzc
  29- 34  F6.3  Jy      S2.7GHz   ? Total flux density at 2.7GHz
  37- 42  F6.3  Jy      S2.7GHzc  ? Correlated flux density at 2.7GHz
  45- 50  F6.3  ---     Vis       ? Visibility (ratio of correlated to total
                                     flux densities)

Note (1):   Q: Quasar
            G: Galaxy
           EF: Empty field
          Lac: BL Lac object
           PN: Planetary nebula
          HII: H II region
          SNR: Supernova remnant
            ?: Optically crowded or obscured field


Table 2: 2x2 contingency table of quasar visibility versus redshift
--------------------------------------------------------------------------------
                      redshift
 Visibility         <1.5    ≥1.5
--------------------------------------------------------------------------------
    ≥0.5           123      78
     <0.5            39       3

Table 3: 2x2 contingency table of quasar visibility versus spectral index
--------------------------------------------------------------------------------
                    spectral index
 Visibility          <0      ≥0
--------------------------------------------------------------------------------
    ≥0.5           142     135
     <0.5            51       8

History: Prepared via OCR at CDS.
  * 17-Oct-1997: 3 errors detected by H. Andernach
     were corrected.
(End)                          James Marcout,  Patricia Bauer [CDS]  22-May-1997