Source counts and V/V max tests for a complete sample of 3CR radio sources studied to very faint limiting magnitudes

Astronomy and Astrophysics – Astronomy

Scientific paper

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Astronomical Photography, Astronomical Photometry, Radio Sources (Astronomy), Stellar Magnitude, Photographic Plates, Quasars, Radio Galaxies, Red Shift, Tables (Data)

Scientific paper

Source counts, and estimates of V/V max, are presented for a sample of 3CR radio sources. It is found that over 90% of the sources with a flux density at 178 MHz greater than or equal to 10 Jy can be identified with objects having apparent magnitudes less than or equal to 23. Such a finding leads to the conclusion that strong radio galaxies may evolve with cosmological epoch in a manner similar to that of quasars. Observations were made from 200 in plates, all taken on a single night.

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