中国物理B ›› 2004, Vol. 13 ›› Issue (7): 1177-1182.doi: 10.1088/1009-1963/13/7/038

• • 上一篇    

Statistical properties of extragalactic radio sources

张江水   

  1. a Centre for Astrophysics, Guangzhou University, Guangzhou 510400, China; b Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China
  • 收稿日期:2003-06-30 修回日期:2004-02-27 出版日期:2004-07-05 发布日期:2005-07-05
  • 基金资助:
    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

Statistical properties of extragalactic radio sources

Zhang Jiang-Shui (张江水)ab   

  1. a Centre for Astrophysics, Guangzhou University, Guangzhou 510400, China; b Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China
  • Received:2003-06-30 Revised:2004-02-27 Online:2004-07-05 Published:2005-07-05
  • Supported by:
    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

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摘要： 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.

关键词: extragalactic objects, radio galaxies, BL Lacertae, quasars

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.

Key words: extragalactic objects, radio galaxies, BL Lacertae, quasars

中图分类号:  (Radio galaxies)

  • 98.54.Gr
98.54.Cm (Active and peculiar galaxies and related systems (including BL Lacertae objects, blazars, Seyfert galaxies, Markarian galaxies, and active galactic nuclei)) 98.54.Aj (Quasars) 98.62.Js (Galactic nuclei (including black holes), circumnuclear matter, and bulges) 98.62.Py (Distances, redshifts, radial velocities; spatial distribution of galaxies) 98.62.Mw (Infall, accretion, and accretion disks) 98.62.Ve (Statistical and correlative studies of properties (luminosity and mass functions; mass-to-light ratio; Tully-Fisher relation, etc.))