Orientation Effects and Seyfert Cores

  • R. P. Norris
  • A. L. Roy
Conference paper
Part of the International Astronomical Union book series (IAUS, volume 175)


Activity in galaxies takes on a bewildering array of guises. Not all of this diversity comes from fundamentally diverse physics, but if we can understand the relationships between different types of galaxy then we may be able to perceive the underlying physics. This taxonomic approach aims to determine which properties are common to several types of galaxy, and which properties differ. The danger in this process is that it is easy to invent spurious relationships between similar, but quite distinct, types of object.


Radio Emission Spiral Galaxy Radio Galaxy Seyfert Galaxy Radio Luminosity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Baum, S. A., O’Dea, C. P., Dallacassa, D., de Bruyn, A. G., & Pedlar, A., 1993, ApJ, 419, 553.ADSCrossRefGoogle Scholar
  2. Heckman, T. M., Armus, L., & Miley, G. K., 1987, AJ, 93, 276.ADSCrossRefGoogle Scholar
  3. Mouri, H., & Taniguchi, Y., 1992, ApJ, 386, 68.ADSCrossRefGoogle Scholar
  4. Norris, R. P., Allen, D. A., & Roche, P. F., 1988, MNRAS, 234, 773.ADSGoogle Scholar
  5. Roy, A. L., Norris, R. P., Kesteven, M. J., Troup, E. R., & Reynolds, J. E., 1994, ApJ, 432, 496.ADSCrossRefGoogle Scholar
  6. Roy, A. L., & Norris, R. P., 1995, MNRAS, submitted.Google Scholar
  7. Roy, A. L., Norris, R. P., Kesteven, M. J., Troup, E. R., & Reynolds, J. E., 1995, in preparation.Google Scholar
  8. Unger, S. W., Pedlar, A., & Hummel, E., 1989, A&A, 208, 14.ADSGoogle Scholar
  9. Wright, A. E., Griffith, M. R., Burke, B. F., & Ekers, R. D., 1995, ApJS, 97, 347.ADSCrossRefGoogle Scholar
  10. Wunderlich, E., Klein, U., & Wielebinski, R., 1987, A&AS, 69, 487.ADSGoogle Scholar

Copyright information

© International Astronomical Union 1996

Authors and Affiliations

  • R. P. Norris
    • 1
  • A. L. Roy
    • 2
  1. 1.Australia Telescope National FacilityEppingAustralia
  2. 2.Australia Telescope National FacilityUniversity of Sydney, and NRAOAustralia

Personalised recommendations