Astronomical Data Center

ADCADC/CDS Standard Document for Catalog:
/catalogs/8/8067/

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

1. Use the ADC Data Viewer Suite to visualize the data. [preview
2. Get the data files via anonymous FTP. (See Note.) [ftp


VIII/67     Catalogue of scintillating radio sources    (Artyukh+, 1996-1998)
================================================================================
The cosmological evolution of compact radio sources from 102MHz observations
    Artyukh V.S., Tyul'bashev S.A., Isaev E.A.
   <Astron. Zh. 73, 661 (1996)>
   =1996AZh....73..661A =1996ARep...40..601A
   <Astron. Zh. 75, 323 (1998)>
   =1998AZh....75..323A =1998ARep...42..283A
================================================================================
ADC_Keywords: Radio sources

Abstract:
    A surveys of compact (<1") radio sources exhibiting interplanetary
    scintillation were conducted at 102MHz on the Large Phased Array of
    the Lebedev Institute of Physics. The surveys cover a 0.047 steradian
    area of the 7C survey in the direction RA=6h28m and DE=45{deg} and a
    0.097-steradian area in the direction RA=10h28m and DE=41{deg}. A
    total of 395 scintillating radio sources in a 0.144 sr region were
    detected.

File Summary:
--------------------------------------------------------------------------------
 Filename   Lrecl   Records   Explanations
--------------------------------------------------------------------------------
ReadMe         80         .   This file
table1.dat     88       125   Catalog1 of scintillating radio sources (1996)
table2.dat    112       289   Catalog2 of scintillating radio sources (1998)
--------------------------------------------------------------------------------

See also:
   J/MNRAS/282/779 : 7C: 151-MHz survey of region 9-16h 20-35deg (Waldram+ 1996)
   J/MNRAS/294/607 : 7C(G) 151MHz survey of the Galactic plane (Vessey+ 1998)
   J/MNRAS/298/637 : 7C: 151MHz survey of 3 regions (Pooley+, 1998)

Byte-by-byte Description of file: table1.dat, table2.dat
--------------------------------------------------------------------------------
   Bytes  Format   Units   Label    Explanations
--------------------------------------------------------------------------------
   1-  2  I2       h       RAh      Right ascension (1950.0) (1)
   4-  5  I2       min     RAm      Right ascension (1950.0)
   7-  8  I2       s       RAs      Right ascension (1950.0)
      11  A1       ---     DE-      Declination sign
  12- 13  I2       deg     DEd      Declination (1950.0)
  15- 18  F4.1     arcmin  DEm      Declination (1950.0)
      20  A1       ---   u_Fs102    [?] ? Uncertainty flag on Flux
  21- 24  F4.2     Jy      Fs102    rms of fluctuations for the flux density
                                    of the scintillating source
  27- 30  F4.2     Jy      F102     Flux density at 102 MHz assuming that
                                    the angular size is equal 0.1".
  33- 41  A9       ---     7C       7C survey number
  44-112  A69      ---     Notes    Special notes (2)
--------------------------------------------------------------------------------
Note (1): Objects are identified in Simbad as:
          [AT96] HHMMSS+DDMM or [AT96] HHMMSS+DDMM.m in table1.dat
          [ATI98] HHMMSS+DDMM in table2.dat
Note (2): Special notes:
       A: compact source, more than 50% of total flux is contained
          in the scintillating component,
       B: the source with the name from the 7C catalog in parenthesis impedes
          the estimation of the parameters for the scintillating source.
       C: the parameters for the scintillating source may be affected by the
          source in parenthesis.
       D: the source identification is ambiguous, and the
          scintillating source may belong to several of the 7C radio sources
       E: scintillating source is not identified with any 7C radio source.
       F: complex region, it is impossible to extract the source.
       G: uncertain identification of the source.
       H: uncertainty in the source detection.

    If a substantial integrated flux density, S, (>3Jy) is observed at the
    location of a scintillating source, it is given in the notes. A symbol
    ':' after flux value indicates uncertainty in the source detection.
--------------------------------------------------------------------------------

================================================================================
(End)                         Veta Avedisova   [INASAN]              15-Jan-2001

Go to ADC Home Page