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Published February 1978 | Published
Journal Article Open

The 5C 6 and 5C 7 surveys of radio sources


5C 6 and 5C 7 continue the series of deep surveys made at 408 and 1407 MHz with the One-Mile telescope at Cambridge. They were intended (1) to provide a sample of faint radio sources suitable for further study; (2) to improve the statistics of source counts N(S) and spectral-index distributions at low flux densities; (3) to study the isotropy of the distribution of faint sources. Each observed field is about 4° in diameter at 408 MHz and 1° in diameter at 1407 MHz, and the field-centres are a α = 02ʰ14ᵐ, δ = 32° (5C 6) and α = 08ᵏ17ᵐ, δ = 27° (5C 7). The synthesized beamwidths (FWHM) are 80 arcsec (408 MHz) and 23 arcsec (1407 MHz). The techniques of observation and data-analysis followed closely those used for 5C 5 (Pearson, T. J., 1975. Mon. Not. R. astr. Soc., 171, 475), with some minor variations which are noted in Section 2.

Additional Information

© 1978 Royal Astronomical Society. Provided by the NASA Astrophysics Data System. Received 1977 September 2. The full text of this paper may be found on Microfiche MN 182/1 distributed with this issue of Monthly Notices. We thank the many members of the Mullard Radio Astronomy Observatory who assisted us with these observations and their interpretation, especially Dr Guy Pooley. TJP thanks the Science Research Council for a research studentship, and AJK thanks the British Council for a scholarship. We are very grateful to Mrs. L. Cooper and Mrs. M. Jones for typing the paper so carefully.

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