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Detailed Description of J/MNRAS/294/607 :
7C(G) 151MHz survey of the Galactic plane (Vessey+ 1998)

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Note : this is the description file of the original catalog. This HTML page corresponds well to the original description, but some minor changes in the format may have been introduced in the FITS output files in order to allow for arithmetic operations on quantities such as coordinates and times. h:m:s and d:m:s units are normally converted into degrees, and YYYY-MM-DD into julian days.
Similarly, some slight changes may have been introduced in the units; the value given in the HTML files supersedes the value indicated in the ReadMe file for this catalogue.
J/MNRAS/294/607         7C(G) 151MHz survey of the Galactic plane (Vessey+ 1998)
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The 7C(G) survey of radio sources at 151MHz - the Galactic plane at
80deg<l<104deg and 126deg<l<180deg, for |b|<5.5deg.
       Vessey S.J., Green D.A.
      <Mon. Not. R. Astron. Soc. 294, 607 (1998)>
      =1998MNRAS.294..607V
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ADC_Keywords: Surveys ; Radio sources

Keywords: catalogues - surveys - radio continuum: general


Abstract:
    Results form a survey of the northern Galactic plane (at
    declination >=30° at 151MHz made with the Cambridge Low Frequency
    Synthesis Telescope are presented. This survey is designated 7C(G) -
    i.e. the Galactic portion of the ongoing 7C surveys. This covers the
    regions 80°<l<104° and 126°<l<180°, for |b|<=5.5°,
    and has some coverage to |b|~9°, with a resolution of
    ~70x70cosec{delta}arcsec2 (RAxDec). The observations, data reduction
    and calibration of this survey are described, and a catalogue of 6262
    compact sources, with a completeness limit of ~0.25Jy over most of the
    survey region, is presented. The catalogue has an rms positional
    accuracy of better than 10arcsec, and the flux densities are tied to
    the scale of Roger, Bridle & Costain (1973AJ.....78.1030R) with an
    accuracy of better than 10 per cent.

File Summary:

FileName Lrecl Records Explanations
× 80 . This file × ReadMe 80 . This file × 7cg.dat 85 6262 7C(G) catalogue
See also: VIII/84 : A final non-redundant catalogue for 7C 151-MHz survey (Hales+ 2007) J/MNRAS/282/779 : 7C 151-MHz survey of region 9-16h 20-35deg (Waldram+ 1996) Byte-by-byte Description of file: 7cg.dat
Bytes Format Units Label Explanations
1- 2 I2 h RAh Beam fitted position right ascension (B1950.0) (1) 4- 5 I2 min RAm Beam fitted position right ascension (B1950.0) 7- 10 F4.1 s RAs Beam fitted position right ascension (B1950.0) 12 A1 --- DE- Beam fitted position declination sign 13- 14 I2 deg DEd Beam fitted position declination (B1950.0) 16- 17 I2 arcmin DEm Beam fitted position declination (B1950.0) 19- 20 I2 arcsec DEs Beam fitted position declination (B1950.0) 23- 24 I2 h RACh Centroid position right ascension (B1950.0) (2) 26- 27 I2 min RACm Centroid position right ascension (B1950.0) 29- 32 F4.1 s RACs Centroid position right ascension (B1950.0) 34 A1 --- DEC- Centroid position declination sign 35- 36 I2 deg DECd Centroid position declination (B1950.0) 38- 39 I2 arcmin DECm Centroid position declination (B1950.0) 41- 42 I2 arcsec DECs Centroid position declination (B1950.0) 45- 50 F6.2 deg GLON Galactic longitude of the beam-fitted position 52- 56 F5.2 deg GLAT Galactic latitude of the beam-fitted position 58- 63 F6.3 Jy S(bf) Beam fitted flux density (3) 65- 70 F6.3 Jy S(in) Integrated flux density 72- 75 F4.1 --- S/N Signal-to-noise ratio 77- 81 F5.2 --- Size Extent of the source size in units of the local beam area 83 I1 --- Peaks ? Number of individual peaks that where included in the flux integration 85 A1 --- n_Peaks [MC] The source is the main (M) or a component (C) peak in the integration
Note (1): The rms accuracies are 5arcsec in RA and 7arcsec in DE Note (2): Multiple peaks integrated together have the same centroid position Note (3): Thew beam-fitted value is the preferred flux density unless the source is clearly extended, in which case the integrated flux density should be used.
History: From http://www.mrao.cam.ac.uk/surveys/7C_G ================================================================================ (End) Patricia Bauer [CDS] 03-Apr-1998