Astronomy and Astrophysics – Astronomy
Scientific paper
May 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982mnras.199..611a&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 199, May 1982, p. 611-631. Research supported by the Science and Engine
Astronomy and Astrophysics
Astronomy
76
Extragalactic Radio Sources, Radiant Flux Density, Radio Astronomy, Spectral Energy Distribution, Angular Distribution, Astronomical Spectroscopy, Brightness Distribution, Contours, Data Reduction, Data Sampling, Radio Spectra, Size (Dimensions), Spectrum Analysis, Telescopes
Scientific paper
A complete sample of 59 B2 radio sources with flux densities between 1 and 2 Jy at 408 MHz is studied in an investigation of the extragalactic radio source population. The radio observations cover a wide range of angular scales from 1 arcsec to several arcmin, and a range of frequencies 0.4-5.0 GHz. Source types in the sample include giant sources of greater than 1 Mpc, objects with extended structure of low brightness, sources showing spectral ageing, and compact objects. It is found that 62% of the sources have curved spectra with over three times as many showing high-frequency steepening as show high-frequency flattening, and the median angular size is 12 arcsec.
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