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J/A+AS/110/419              7C: survey of radio sources         (Visser+, 1995)
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The 7C survey of radio sources at 151 MHz. A 418-square-degree region
centred at RA = 17h, Dec = +65deg
       Visser A.E., Riley J.M., Roettgering H.J.A. , Waldram E.M.
      <Astron. Astrophys. Suppl. Ser. 110, 419 (1995)>
      =1995A&AS..110..419V      (SIMBAD/NED Reference)
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ADC_Keywords: Radio sources; Surveys
Keywords: surveys - radio continuum: general

Description:
   The Cambridge Low Frequency Synthesis Telescope has been used at 151MHz to
   survey a region of 418 square degrees centred at RA=17h, DE=65deg, which
   includes the North Ecliptic Cap. The resolution is 70x70"cosec{delta} and
   the rms noise on the maps is 25mJy/beam. We present positions and flux
   densities for 2702 sources which have a signal to noise ratio >5.5 and radio
   maps of 37 selected extended sources.

File Summary:
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  FileName      Lrecl  Records   Explanations
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ReadMe             80        .   This file
table1             87     2702   7C sourcelist
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See also:
    J/MNRAS/282/779 : 7C: 151MHz 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
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   Bytes Format  Units   Label    Explanations
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   1- 12  A12    ---     Name     IAU name, prefixed by 7C
  15- 16  I2     h       RAh      Beam-fitted position right ascension B1950
  18- 19  I2     min     RAm      Beam-fitted position right ascension B1950
  21- 24  F4.1   s       RAs      Beam-fitted position right ascension B1950
      26  A1     ---     DE-      Beam-fitted position declination B1950 (sign)
  27- 28  I2     deg     DEd      Beam-fitted position declination B1950
  30- 31  I2     arcmin  DEm      Beam-fitted position declination B1950
  33- 34  I2     arcsec  DEs      Beam-fitted position declination B1950
  37- 38  I2     h       RACh     Centroid position right ascension B1950
  40- 41  I2     min     RACm     Centroid position right ascension B1950
  43- 46  F4.1   s       RACs     Centroid position right ascension B1950
      48  A1     ---     DEC-     Centroid position declination B1950 (sign)
  49- 50  I2     deg     DECd     Centroid position declination B1950
  52- 53  I2     arcmin  DECm     Centroid position declination B1950
  55- 56  I2     arcsec  DECs     Centroid position declination B1950
  59- 63  F5.2   Jy      S        Beam-fitted flux density
  66- 70  F5.2   Jy      Sint     Integrated flux density
  74- 78  F5.1   ---     SNR      Signal to noise ratio
  81- 84  F4.1   ---     Extent   Extent of the source
                                   in units of local beam area
      87  I1     ---     Nmax     Number of local maxima within the
                                   integrated region
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(End)                                        Patricia Bauer  [CDS]   06-Jan-1995