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OJ287 as a binary system

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

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

Abstract

The historical optical light curve of OJ287 shows repeated outbursts at 11.65 yr intervals. Making use of computer modeling, we interpret this as resulting from a 9 yr orbital period in a binary system. Variability time scales are used to construct a mass model of the binary system, with derived masses of 5.109 M⊙ and 2·107 M⊙, We discuss how binary systems such as in OJ287 may result from mergers of galaxies. We infer that the system must contain also a third supermassive black hole.

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Author information

Author notes

  1. M. Valtonen

    Present address: Observatory, 00130, Helsinki, Finland

Authors and Affiliations

  1. Turku University Observatory, 20520, Turku, Finland

    M. Valtonen, A. Sillanpää, S. Haarala, L. Valtaoja & E. Valtaoja

  2. Department of Astronomy, University of Gothenburg, 41296, Gothenburg, Sweden

    B. Sundelius

  3. Department of Physics and Astronomy, University of Alabama Tuscaloosa, 5487, Alabama, USA

    G. G. Byrd

  4. Radio Laboratory, Helsinki University of Technology, 02150, Espoo, Finland

    H. Teräsranta & S. Urpo

Authors
  1. M. Valtonen
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  2. A. Sillanpää
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  3. S. Haarala
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  4. L. Valtaoja
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  5. E. Valtaoja
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  6. B. Sundelius
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  7. G. G. Byrd
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  8. H. Teräsranta
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  9. S. Urpo
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Editor information

H. Richard Miller Paul J. Wiita

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© 1988 Springer-Verlag

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Valtonen, M. et al. (1988). OJ287 as a binary system. 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_169

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  • DOI: https://doi.org/10.1007/3-540-19492-4_169

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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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