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J/AZh/74/812                    102MHz radio source survey   (Tyul'bashev 1997)
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Analysis of compact radio sources using 102 MHz interplanetary
scintillation observations
       Tyul'bashev S.A.
      <Astron. Zh., 74, 812 (1997)>
      =1997AZh....74..812T (SIMBAD/NED BibCode)
      =1997ARep...41..723T
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ADC_Keywords: Radio sources ; Radio lines

Abstract:
    An analysis of 125 radio sources from a 102MHz survey of scintillating
    sources is presented. These compact (<1") radio sources are identified
    with radio sources in the most sensitive catalogs currently available.
    Analysis of the integrated spectra for these objects indicates that
    the compact sources have steep spectra ({alpha}>0.5). There is a
    tendency for weaker sources to be more compact. The inferred spectral
    indices for compact sources in the cores of extended objects are on
    average lower than the integrated values. The most likely candidates
    for optical counterparts to the compact radio sources from the
    scintillating source survey are steep-spectrum quasars.

File Summary:
--------------------------------------------------------------------------------
  FileName      Lrecl  Records   Explanations
--------------------------------------------------------------------------------
ReadMe             80        .   This file
table1.dat         63      125   Source flux densities, spectral indices,
                                  and compactnesses
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Byte-by-byte Description of file: table1.dat
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   Bytes Format Units   Label     Explanations
--------------------------------------------------------------------------------
   1-  8  A8    ---     Name      Source name (based on 1950 position) (1)
  10- 13  F4.2  Jy      rms       rms fluctuation for the scintillating source
                                   flux density at 102MHz (1)
  15- 18  F4.2  Jy      S102MHz   Flux density at 102MHz (1)
  20- 25  F6.3  Jy      S151MHz   ? Integrated flux density at 151MHz (2)
  27- 32  F6.3  Jy      S365MHz   ? Integrated flux density at 365MHz (3)
  34- 38  F5.3  Jy      S408MHz   ? Integrated flux density at 408MHz (4)
  40- 44  F5.3  Jy      S1400MHz  ? Integrated flux density at 1400MHz (5)
  46- 50  F5.3  Jy      S4885MHz  ? Integrated flux density at 4885MHz (6)
  52- 55  F4.2  ---     SI        ? Spectral index for the integrated spectra
      57  A1    ---   l_R         Limit flag on R
  58- 61  F4.2  ---     R         ? Compactness of the source (7)
      63  A1    ---   u_R         [?] Uncertainty flag on R
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Note (1): Data form Artyukh et al., 1996, Cat. <J/AZh/73/661>
Note (2): Fluxes from Ryle & Clarce (1961MNRAS.122..349R)
Note (3): Fluxes form Longair (1966MNRAS.133..421L)
Note (4): Fluxes from Bennett (1963MmRAS..68..163B)
Note (5): Fluxes from Windhorst et al. (1984A&AS..58....1W)
Note (6): Fluxes from Windhorst et al. (1984A&AS..58...39W)
Note (7): Ratio of the flux density of the scintillating component to the
           integrated flux density of the source.
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History: Prepared via OCR at CDS.
  * 01-Mar-1999: three errors were detected in the English version
    (1997ARep...41..723T) by H. Andernach:
    -> 1 source (0612+396) is missing
    -> missing l_R flag for 0636+397
    -> bad name (1649+485) for 0649+485

References:
  Artyuh & Tyul'bashev,   1996ARep...40..601A (1996AZh....73..661A)
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(End)                           James Marcout, Patricia Bauer [CDS]  13-Nov-1998