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Evolutionary sequence of Seyfert galaxies

  • VII. Cosmological and Evolutionary Considerations
  • Conference paper
  • First Online:
Active Galactic Nuclei

Part of the book series: Lecture Notes in Physics ((LNP,volume 307))

Abstract

We suggest that there exists an evolutionary sequence from Seyfert 2 to Seyfert 1 galaxies. We review observations which support this suggestion and the idea that the main parameter is the dust content in and around the Broad Line Region (BLR). We propose that Seyfert 2 galaxies evolve into Seyfert 1 Galaxies by expelling the dust from the BLR. It is further supposed that the dust is due to the interaction of the host galaxy with a second galaxy. The amount of dust needed is less than that found in a typical spiral galaxy.

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Author information

Authors and Affiliations

  1. Department of Astronomy, University of Virginia, University Station, P.O. Box 3818, 22903, Charlottesville, VA, USA

    David L. Blank & Noam Soker

Authors
  1. David L. Blank
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  2. Noam Soker
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Editor information

H. Richard Miller Paul J. Wiita

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© 1988 Springer-Verlag

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Blank, D.L., Soker, N. (1988). Evolutionary sequence of Seyfert galaxies. In: Miller, H.R., Wiita, P.J. (eds) Active Galactic Nuclei. Lecture Notes in Physics, vol 307. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-19492-4_235

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  • DOI: https://doi.org/10.1007/3-540-19492-4_235

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-19492-7

  • Online ISBN: 978-3-540-39304-7

  • eBook Packages: Springer Book Archive

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