Statistical properties of extragalactic radio sources
Zhang Jiang-Shui (张江水)ab
a Centre for Astrophysics, Guangzhou University, Guangzhou 510400, China; b Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China
Abstract In this paper, a large sample of extragalactic radio sources is analysed to show their statistical properties. The core and total radio powers are used to determine the core-dominance parameter for galaxies, BL Lacertae objects and quasars; mutual correlations between core radio power, total radio power, redshift and core dominance parameter are examined for different subclasses. A statistically significant correlation between the total and core radio power is confirmed. There are no obvious correlations between core-dominance parameter and the total power for our whole sample and quasars, but there is a statistically significant anti-correlation for our galaxy sample. Some discussions and comparison of the correlations with those obtained by other authors are also given.
Received: 30 June 2003
Revised: 27 February 2004
Accepted manuscript online:
(Active and peculiar galaxies and related systems (including BL Lacertae objects, blazars, Seyfert galaxies, Markarian galaxies, and active galactic nuclei))
(Statistical and correlative studies of properties (luminosity and mass functions; mass-to-light ratio; Tully-Fisher relation, etc.))
Fund: Project supported by the National Natural Science Foundation of China (Grant No 19973001), National 973 project (Grant No NKBRSF G19990754) and the Foundation for Outstanding Young Researchers from the National Natural Science Foundation of China, (Grant
Cite this article:
Zhang Jiang-Shui (张江水) Statistical properties of extragalactic radio sources 2004 Chinese Physics 13 1177
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