High-resolution observations at 408 MHz of sources from the B2 catalogue

Astronomy and Astrophysics – Astronomy

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Astronomical Catalogs, Astronomical Models, High Resolution, Microwave Interferometers, Radio Sources (Astronomy), Astronomical Spectroscopy, Cosmology, Spectrum Analysis, Statistical Analysis

Scientific paper

Radio sources from the Bologna B2 catalog have been observed at 408 MHz with a long-baseline interferometer having a minimum lobe spacing of 1.2 arcsec. Forty-seven per cent of the sources have maximum fringe visibilities greater than 0.2, and 36 per cent contain at least two compact components. The results are discussed in relation to source morphology, optical identification, and spectral index. The observations are part of a program to study the high-resolution structure of radio sources over a wide flux-density range.

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