Morphological Differences in the Nature of Radio Sources in High Density Groups

  • T. K. Menon
Conference paper


A VLA study of 393 galaxies in high density groups has shown that the absolute magnitude distributions of radio-loud and radio-quiet ellipticals in the groups are the same while the radio-loud spirals are significantly brighter than the radio-quiet spirals. Furthermore radio sources in ellipticals are found only among the brightest ellipticals in a group independent of their optical luminosity. These results suggest a fundamental difference in the ultimate consequences of interaction for ellipticals and spirals in a group and the subsequent triggering of nuclear activity.


Radio Source Elliptical Galaxy Radio Luminosity Bright Galaxy Group Galaxy 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1990

Authors and Affiliations

  • T. K. Menon
    • 1
  1. 1.Department of Geophysics and AstronomyUniversity of British ColumbiaVancouverCanada

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