Astronomical Data Center

ADCADC/CDS Standard Document for Catalog:
/catalogs/8/8049/

The following is the "ReadMe" document that describes this ADC catalog. You can access the files described here in three ways:

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2. Get the data files via anonymous FTP. (See Note.) [ftp


VIII/49           The Zelenchuk Surveys                     (Amirkhanyan+, 1989)
================================================================================
The Zelenchuk survey 3.9 GHz Survey (0 to 14 degs)
     Amirkhanyan V.R.
    <The Zelenchuk 3.9 GHz Survey (1989)>
Zelenchuk sky survey within the declination range 0-14 deg.(A supplement)
     Larionov M.G.
    <Soobshch. Spets. Astrof. Obs., 68, 14 (1991)>
    =1991SoSAO..68...14L
RATAN-600 3.9GHz survey decl. -1 to 0 deg (Larionov+, 1994)
     Larionov M.G., Parijskij Yu.N., Zhuravlev V.I., Sidorenkov V.N.,
     Berlin A.B., Nizhel'skii N.A.
    <Astron. Astrophys. Suppl. Ser. 106, 119 (1994)>
    =1994A&AS..106..119L
The survey of the polar region at 3900 MHz.
     Amirkhanyan V.R., Gorshkov A.G., Kapustkin A.A., Konnikova V.K.,
     Lazutkin A.N
    <Pis'ma Astron. Zh., 18, 396 (1992)>
    =1992PAZh...18..396A
The complete sample of the radio sources from the Zelenchuk survey at the
frequencies 3.9, 4.8, 7.5 and 11.2 GHz.
     Amirkhanyan V.R., Gorshkov A.G., Konnikova V.K.
    <Astron. Zh., 69, 225 (1992)>
    =1992AZh....69..225A
================================================================================
ADC_Keywords: Radio sources; Surveys


Description:
    The main catalog  contains  positions  and  flux  densities  for  8511
    sources detected  in the  Zelenchuk 3.9  GHz Survey  with declinations
    between 0 and 14 degrees.  The  survey  was  originally  published  in
    Amirkhanyan et  al.  1989,  MIR  Publ.,  Moscow,  and  contained  8511
    sources.  The machine  version has  been cleaned  from a  few spurious
    sources  by  the  authors.  The  angular  resolution  is  (RA  x  DEC)
    70"/cos(decl) x 50'. The survey is 95 percent complete to the limiting
    flux density 50  mJy, except  near the  boundaries of  the declination
    zone.

    A supplementary  catalogue  of  2946  radio  sources  observed  during
    Zelenchuk survey at 3.9  GHz in  the flux  density from  40 to  50 mJy
    within the declination range 0-14 degrees are presented.

    ratan is the first results of the deep search survey over a portion of
    the celestial  sphere with  the radio  telescope RATAN-600  at several
    cm-wavelengths. The catalogue contains 691 radio sources at 3.9 GHz.

    Fluxes at the frequencies  3.9,  4.8,  7.5  and  11.2  GHz  have  been
    measured for the  complete  sample  of  the  radio  sources  from  the
    Zelenchuk survey.  The sample contains all sources with S > 200 mJy in
    the 4-6 degree declination range.

File Summary:
--------------------------------------------------------------------------------
 FileName  Lrecl    Records    Explanations
--------------------------------------------------------------------------------
ReadMe        80          .    This file
main.dat      65       8511    Radio survey at 3.9 GHz decl. 0-14deg
suppl.dat     36       2946    Weak sources at 3.9 GHz decl. 0-14deg
ratan.dat     60        691    3.9GHz survey decl. -1 to 0 deg
                                 (Table 2 of paper 1994A&AS..106..119L)
polar.dat     48        219    Survey of the polar region at 3.9GHz
sample.dat    63        184    Complete sample of the radio sources
                                 at 3.9, 4.8, 7.5 and 11.2 GHz
--------------------------------------------------------------------------------

See also:
    J/A+AS/87/1  : Parijskij et al, 1991,  RATAN-600 7.6 cm catalog of
                  radio sources from "Experiment Cold-80"
    J/AZh/72/291 : Variabilities at 3.9 and 7.5GHz (Gorshkov+ 1995)

Byte-by-byte Description of file: main.dat
--------------------------------------------------------------------------------
   Bytes Format  Units   Label        Explanations
--------------------------------------------------------------------------------
   1- 11  A11    ---     Name         Object name
  13- 14  I2     h       RAh          Right Ascension 1950 (hours)
  15- 16  I2     min     RAm          Right Ascension 1950 (minutes)
  17- 20  F4.1   s       RAs          Right Ascension 1950 (seconds)
      22  A1     ---     DE-          Declination 1950 (sign)
  23- 24  I2     deg     DEd          Declination 1950 (degrees)
  25- 28  F4.1   arcmin  DEm          Declination 1950 (minutes) (1)
  30- 31  I2     h       RA2000h      Right Ascension 2000 (hours)
  32- 33  I2     min     RA2000m      Right Ascension 2000 (minutes)
  34- 37  F4.1   s       RA2000s      Right Ascension 2000 (seconds)
      39  A1     ---     DE2000-      Declination 2000 (sign)
  40- 41  I2     deg     DE2000d      Declination 2000 (degrees)
  42- 45  F4.1   arcmin  DE2000m      Declination 2000 (minutes) (1)
  47- 51  I5     mJy     S3.9GHz      Peak flux density at 3.9 GHz (2)
  54- 67  A14    ---     OtherName    Other name (3)
--------------------------------------------------------------------------------
Note (1):
     In the catalogue, the declination was given only as hours and minutes,
     due to the sparse resolution in declination. A rough approximation to
     positional errors is d(DEC) ~ 0.45'/S[Jy]

Note (2):
     A crude estimate of the flux density error is
     dS = sqrt((0.1)**2 +(S/10Jy)**2 ) Jy
     The errors in flux density and position may be estimated using the
     following table:

      Flux S(Jy)    Error S(mJy)     dPA cosD (sec)    dD (')
      --------------------------------------------------------
        0.05            11               0.67         9.1
        0.07            12               0.50         6.5
        0.10            14               0.37         4.6
        0.20            22               0.24         2.3
        0.30            32               0.21         1.5
        0.40            41               0.20         1.1
        0.50            51               0.20         0.9
        0.70            71               0.19         0.7
        1.00           100               0.19         0.5
      --------------------------------------------------------
      where
      dPA is the difference in right ascension, cosD is the cosine
      ascension, and dD is the difference in declination."

Note (3):
     This column gives an alternative name for the source, taken from
        Dixon's Master List of Radio Sources, 1977 (Cat. <VII/2>),
        Astron.Tsirk. 1099,2;
        Astron.Tsirk. 1137,5;
        Astron.Tsirk. 1157,2,
        Astron.Zhurn. 58,717;
        Large et al 1981, MNRAS 194,693 (Cat. <VIII/16>)
        AuJP 35,177;
        ApJS 51,67;
        ApJS 61,1 (the MIT-Green Bank (MG I) survey).
--------------------------------------------------------------------------------

Byte-by-byte Description of file: suppl.dat
--------------------------------------------------------------------------------
     Bytes   Format Units   Label     Explanations
--------------------------------------------------------------------------------
     1-   8    A8    ---     Name      Source designation
          9    A1    ---   m_Name      [ab ]? Possible component
    11-  12    I2    h       RAh       Right ascension (1950)
    14-  15    I2    min     RAm       Right ascension (1950)
    17-  21    F5.2  s       RAs       Right ascension (1950)
         24    A1    ---     DE-       Sign of declination (1950)
    25-  26    I2    deg     DEd       Declination (1950) (1)
    28-  31    F4.1  arcmin  DEm       Declination (1950)
    35-  36    I2    mJy     S3.9GHz   3.9 GHz peak flux density
--------------------------------------------------------------------------------
Note (1): For source 0701+039, the printed declination is +03 5 .8
--------------------------------------------------------------------------------

Byte-by-byte Description of file: ratan.dat
--------------------------------------------------------------------------------
   Bytes Format  Units   Label    Explanations
--------------------------------------------------------------------------------
   1-  3  I3     ---     [LPZ94]  [1/691]+ Sequential number (1)
   5- 13  A9     ---     Name     Source name (RATAN)
  17- 18  I2     h       RAh      Right ascension 1950
  20- 21  I2     min     RAm      Right ascension 1950
  23- 26  F4.1   s       RAs      Right ascension 1950
      29  A1     ---     DE-      Declination sign
  30- 31  I2     deg     DEd      Declination 1950
  33- 36  F4.1   arcmin  DEm      Declination 1950
  39- 42  I4     mJy     S3.9GHz  Flux density at 3.9 GHz
  44- 45  I2     mJy   e_S3.9GHz  rms uncertainty of S3.9GHz (5*rms)
  50- 60  A11    ---     Other    ? Other name
--------------------------------------------------------------------------------
Note (1): Sequential number as in Table 2 of paper by Larionov et al.,
          in 1994A&AS..106..119L
--------------------------------------------------------------------------------

Byte-by-byte Description of file: polar.dat
--------------------------------------------------------------------------------
   Bytes Format  Units   Label     Explanations
--------------------------------------------------------------------------------
   1- 10  A10    ---     Name      Source name
  14- 15  I2     h       RAh       Right ascension 1950
  17- 18  I2     min     RAm       Right ascension 1950
  20- 21  I2     s       RAs       Right ascension 1950
  25- 26  I2     deg     DEd       Declination 1950
  28- 29  I2     arcmin  DEm       Declination 1950
  32- 34  I3     mJy     S3.9GHz   Flux density at 3.9 GHz
  37- 38  I2     mJy   e_S3.9GHz   rms uncertainty of F3.9GHz (5*rms)
  41- 48  A8     ---     Other     ? Other name
-------------------------------------------------------------------------------

Byte-by-byte Description of file: sample.dat
--------------------------------------------------------------------------------
   Bytes Format  Units   Label        Explanations
--------------------------------------------------------------------------------
   1-  8  A8     ---     Name         Source name
  11- 12  I2     h       RAh          Right ascension 1950
  13- 14  I2     min     RAm          Right ascension 1950
  15- 18  F4.1   s       RAs          Right ascension 1950
      19  A1     ---     DE-          Declination sign
  20- 21  I2     deg     DEd          Declination 1950
  22- 23  I2     arcmin  DEm          Declination 1950
  24- 27  F4.1   arcsec  DEs          Declination 1950
  29- 32  I4     mJy     S3.9GHz      ? Flux density at 3.9 GHz
  34- 36  I3     mJy   e_S3.9GHz      ? rms uncertainty of S3.9GHz (5*rms)
  38- 41  I4     mJy     S4.8GHz      ? Flux density at 4.8 GHz
  43- 45  I3     mJy   e_S4.8GHz      ? rms uncertainty of S4.8GHz (5*rms)
  47- 50  I4     mJy     S7.5GHz      ? Flux density at 7.5 GHz
  52- 54  I3     mJy   e_S7.5GHz      ? rms uncertainty of S7.5GHz (5*rms)
  56- 59  I4     mJy     S11.2GHz     ? Flux density at 3.9 GHz
  61- 63  I3     mJy   e_S11.2GHz     ? rms uncertainty of S11.2GHz (5*rms)
-------------------------------------------------------------------------------

Acknowledgements:
    It is a pleasure to thank H. Andernach <Heinz.Andernach@astro.ugto.mx>
    who forwarded a copy of his electronic version to CDS.

History:
  * File main.dat was provided by V. Konnikova (Moscow) to H. Andernach
    in July 1994
  * File suppl.dat was provided by M.G. mgl@sai.msu.su to H. Andernach
    in March 1996; it was also independently prepared at CDS.
  * File ratan.dat was received on diskette from A&A Editors (March 1994)
    and distributed as table2 of catalog J/A+AS/106/119 ;
    the "[LPZ94]" column (sequential number) was added (November 1995)
  * File polar.dat was provided by Vladimir Amirchkanjan
    <amir@sao.stavropol.su> to H. Andernach in March 1993
  * File sample.dat was provided by Vladimir Amirchkanjan
    <amir@sao.stavropol.su> to H. Andernach in May 1995
  * On 27-Nov-1997, suppl.dat file was corrected
================================================================================
(End)      Francois Ochsenbein [CDS], Veta Avedisova [INASAN]        06-Nov-1997

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