J/MNRAS/294/607 7C(G) 151MHz survey of the Galactic plane (Vessey+ 1998)
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 1998MNRAS.294..607V
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
∼70x70cosecδarcsec2 (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 1973AJ.....78.1030R) with an
accuracy of better than 10 per cent.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
7cg.dat 85 6262 7C(G) catalogue
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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
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Bytes Format Units Label Explanations
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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- 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
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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.
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History:
From http://www.mrao.cam.ac.uk/surveys/7C_G
(End) Patricia Bauer [CDS] 03-Apr-1998