Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981mnras.196..967m&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 196, Sept. 1981, p. 967-986.
Astronomy and Astrophysics
Astronomy
36
Astrometry, Astronomical Models, Extragalactic Radio Sources, Radio Astronomy, Computerized Simulation, Correlation, Data Processing, Kinematics, Quasars, Radio Galaxies, Spatial Distribution, Statistical Distributions, Symmetry
Scientific paper
The symmetry properties of a carefully selected sample of 76 double radio sources are examined. The average intrinsic misalignment (the ratio of the displacement of the optical object to the source size, before projection) of these sources is found to be 0.038, independent of the intrinsic size. It is also found that sources which are most misaligned tend to have the highest values of D, the ratio of hot-spot separations from the nucleus. Hot spots are shown to be more asymmetric in brightness than are tails. Although the relative brightness of hot spots is not correlated with D, it is noted that the relation between D and F, the ratio of total flux densities in components, implies that most of the diffuse structure tends to be associated with the hot spot closer to the optical identification.
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