Other
Scientific paper
Aug 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982mnras.200..747b&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Vol. Vol. 200, p. 747 - 766
Other
32
Radio Sources:Contour Maps, Radio Sources:Counts, Radio Sources:Spectral Indices, Radio Sources:Surveys
Scientific paper
A deep survey (5C12) of a region close to the North Galactic Pole has been carried out with the Cambridge One-Mile telescope. Within a region of 4° diameter, 299 sources were detected at 408 MHz, while 65 sources were detected at 1407 MHz in a concentric region of 1° in diameter. The signal-to-noise ration at 408 MHz has been enhanced over that of previous 5C surveys by using autocalibration of the phase data. The positions for 5C 12 sources are sufficiently accurate, as evidenced by direct comparison with data from other radio surveys, that reliable optical identification may be attempted.
Source counts are presented and confirm the results from previous 5C surveys. Spectral index distributions are constructed for samples of sources selected at 408 and 1407 MHz and compared with results for samples selected at higher flux densities. There is no evidence for any change in the distributions over a 103 range in flux density.
Benn Chris R.
Grueff Gavril
Vigotti Mario
Wall Jasper V.
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