Nuclear Activity: How Irritating Are Neighbours?

  • J. M. van der Hulst
  • E. Hummel
  • W. C. Keel
  • R. C. Kennicutt
Conference paper


Many observational studies in the last decade have strongly suggested that galaxy - galaxy interactions do affect the properties of spiral galaxies, in particular the properties of their nuclei. The first indications came from radio surveys of galaxies (Stocke 1978, Hummel 1980, Condon et al. 1982). Later on numerous optical and IR studies of interacting galaxies and galaxy pairs (Heckman 1980, Heckman et al. 1980, Kennicutt and Keel 1984, Dahari 1984, Joseph et al. 1984, Lonsdale et al. 1984, Keel et al. 1985. Joseph and Wright 1985, Cutry and McAlary 1985, Bushouse 1987, Bushouse et al. 1985, Kennicutt et al. 1987) have provided insight in the physical processes causing the observed excess nuclear radio emission. These studies indicate that much of the inferred nuclear activity can be ascribed to either enhanced star formation in the central few hundred parsecs or enhanced non-thermal activity.


Star Formation Equivalent Width Spiral Galaxy Star Formation Rate Nuclear Activity 
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.


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Copyright information

© Springer-Verlag Berlin Heidelberg 1990

Authors and Affiliations

  • J. M. van der Hulst
    • 1
  • E. Hummel
    • 2
  • W. C. Keel
    • 3
  • R. C. Kennicutt
    • 4
  1. 1.Kapteyn Astronomical InstituteGroningenThe Netherlands
  2. 2.Nuffield Radio Astronomy Laboratories, Jodrell BankUK
  3. 3.Dept. of Physics and AstronomyUniversity of AlabamaTuscaloosaUSA
  4. 4.Steward ObservatoryUniversity of ArizonaTucsonUSA

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