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Reddening of narrow line regions

  • I. Spectral Studies in the Optical, Ultraviolet and Infrared
  • Conference paper
  • First Online:
Active Galactic Nuclei

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

Abstract

We make a critical comparison of a number of techniques for estimating narrow line region (NLR) reddenings and discuss their accuracy. We confirm that there is a preferred case B′ Hα/Hβ ratio of 3.1 for the NLR. All the reported scatter can be explained by known observational errors and contrary to some earlier claims, there is no evidence for intrinsic spread in the B′ Hα/Hβ ratio. This implies that the ionizing continua and NLR abundances in quasars are very similar.

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Authors and Affiliations

  1. Astronomy Program, ESS Building, State University of New York, 11794-2100, Stony Brook, NY

    Adam Wysota

  2. Astronomy Department, Dennison Building, University of Michigan, 48109-1090, Ann Arbor, MI

    C. Martin Gaskell

Authors
  1. Adam Wysota
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  2. C. Martin Gaskell
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Editor information

H. Richard Miller Paul J. Wiita

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© 1988 Springer-Verlag

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Wysota, A., Gaskell, C.M. (1988). Reddening of narrow line regions. 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_171

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  • DOI: https://doi.org/10.1007/3-540-19492-4_171

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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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