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J/A+AS/103/349       Optical identification of S4 sources        (Stickel+ 1994)
An update of the optical identification status of the S4 radio source catalogue.
     STICKEL M., KUEHR H.
    <Astron. Astrophys. 103, 349 (1994)>
    =1994A&AS..103..349S
ADC_Keywords: Radio sources; Cross identifications

Keywords: catalogues - radio continuum: general - BL Lac Objects: general -
          galaxies: general - quasars: general

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
notes             89      350   notes on individual S4 sources
table1           110      270   The S4 radio source catalogue
table2            53       26   Statistics of S4 radio sources


Byte-by-byte Description of file: table1

   Bytes Format  Units   Label    Explanations

   1-  3  I3     ---     Seq      [1/270]+ Sequence Number
   5- 12  A8     ---     Object   Object name
  14- 15  I2     h       RAh      Right Ascension 1950 (hours)
  17- 18  I2     min     RAm      Right Ascension 1950 (minutes)
  20- 24  F5.2   s       RAs      Right Ascension 1950 (seconds)
      26  A1     ---     DE-      Declination 1950 (sign)
  27- 28  I2     deg     DEd      Declination 1950 (degrees)
  30- 31  I2     arcmin  DEm      Declination 1950 (minutes)
  33- 36  F4.1   arcsec  DEs      Declination 1950 (seconds)
  38- 40  A3     ---     r_pos    Reference to the radio position
  42- 45  F4.1   mag     m        [9/24]? Magnitude of the optical
                                          identification
      46  A1     ---     u_m      [*] '*' when no magnitude available
  47- 52  A6     ---     Type     Type of the optical identification (1)
      54  A1     ---     l_z      greater sign (>) for lower redshift limits
  55- 60  F6.4   ---     z        ]0/4]? Redshift
      61  A1     ---     u_z      [?*] '?' for uncertain value
                                       '*' when no magnitude available
  62- 67  F6.3   Jy      S(5GHz)  5GHz flux
  69- 73  F5.2   ---     s(11-6)  two-point spectral index between 11 and 6 cm
  75-110  A36    ---    Comments  References to other compilations and
                                  individual notes (2)

Note (1): Abbreviated classes are:
        QSO = Quasar
        GAL = Galaxy
        BL  = BL Lac object
        EF  = Empty Field
Note (2): Keys to references and notes:
        A     Waltman et al.  (1981)
        A1    Andernach et al. (1988)
        B     Hewitt / Burbidge (1987)
        Be    Hewitt / Burbidge (1991)
        Bi    Hewitt / Burbidge (1989)
        BJ    van Breugel / Jaegers (1982)
        BV    Vigotti et al. (1989)
        C     Spinrad et al. (1985)
        CO    Condon et al. (1991)
        D     Pearson / Readhead (1988)
        G     Burbidge / Crowne (1979)
        J     Kuehr et al. (1981a)
        K     Kapahi (1981)
        L     Peacock / Wall (1981)
        L1    Peacock / Wall (1982)
        M1    Morabito et al. (1982)
        M2    Morabito et al. (1983)
        M3    Morabito et al. (1985)
        MC1   Machalski / Condon (1983)
        MC2   Machalski / Condon (1985)
        O1    Djorgovski et al. (1988)
        O2    Gregorini et al.  (1988)
        O3    Argyle / Eldridge  (1990)
        O4    Donivan et al. (1978)
        O5    Sovers et al. (1988)
        O6    Adams / Rudnick (1977)
        O7    Porcas et al. (1980)
        O8    van Breugel et al. (1983)
        P     Perley (1982)
        PA    Patnaik et al. (1992)
        R     Veron-Cetty / Veron (1981)
        S4    Pauliny-Toth et al. (1978)
        U     Ulvestad et al. (1981)
        V     Veron-Cetty / Veron (1991)
        VG    van Gorkom et al. (1989)
        W     Wall / Peacock (1985)


Byte-by-byte Description of file: table2

   Bytes Format  Units   Label    Explanations

   1- 49  A49    ---     Class    Source Class
  51- 53  I3     ---     Number   Number of Sources


Byte-by-byte Description of file: notes

   Bytes Format  Units   Label    Explanations

   1- 10  A10    ---     Name     S4 source name
  11- 89  A79    ---    Comments  --------------------------------------------------------------------------------

See also:


See also:
    Catalogue III/175 (Optical spectroscopy of 1Jy, S4 and S5 sources)
    J/A+AS/98/393  
    J/A+AS/105/67     (Optical identifications from 1Jy, S4, S5)
    J/A+AS/105/211    (Optical identification of 1Jy)
    J/A+AS/115/11     (Optical identifications from 1Jy, S4, S5)


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(End)                                    Francois Ochsenbein [CDS]   12-Nov-1993