Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978mnras.182..761s&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 182, Mar. 1978, p. 761-772.
Astronomy and Astrophysics
Astronomy
7
Radiant Flux Density, Radio Sources (Astronomy), Statistical Distributions, Cosmology, Extragalactic Radio Sources, Fine Structure, Luminous Intensity, Statistical Analysis, Time Dependence, Visibility
Scientific paper
A statistical study has been made of the properties of compact components in radio sources based on observations with a long-baseline interferometer over a wide flux density range. The fraction of the flux density contained in components less than or approximately equal to 1 arcsec has been determined for each source and the statistics of this parameter have been investigated as a function of flux density. The observations are compared with the expected properties of radio sources calculated on the basis of a complete sample of 3CR sources. The best agreement with the observations is achieved when strong density evolution and linear-size evolution are included in the calculations. Some aspects of the results are explained by a correlation of component compactness (in linear size) with radio luminosity for the high-luminosity sources in the 3CR sample.
Speed Barry
Warwick Robert S.
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