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  • Wanders, I. (author)

Spectroscopic monitoring of active galactic nuclei. II. The Seyfert-1 galaxy NGC 3516

  • Article/chapterEnglish1993

Publisher, publication year, extent ...

  • 1993
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:uu-197172
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-197172URI

Supplementary language notes

  • Language:English
  • Summary in:English

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Classification

  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • The authors present the results of a five month spectroscopic monitoring campaign of the Seyfert-1 galaxy NGC 3516. Using a new calibration method and applying a correction for seeing differences during the various observations they can scale the spectra to each other with a much higher accuracy than hitherto achieved. NGC 3516 shows large amplitude variations on a time scale of several weeks. Asymmetric profile variations occur on the same time scale as the continuum variations. The authors show the presence of a varying dip on the blue wing of the Hbeta profile, which is not present on the Halpha profile, and which corresponds to the absorption features previously seen in the UV emission lines of NGC 3516. From cross-correlation analysis they find a time lag of 14plusmn2 days for the Halpha and 7plusmn3 days for the Hbeta emission-line response to continuum variations

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • van Groningen, E. (author)
  • Alloin, D. (author)
  • Aretxaga, I. (author)
  • Axon, D. (author)
  • de Bruyn, A. G. (author)
  • Clavel, J. (author)
  • Dietrich, M. (author)
  • Goad, M. R. (author)
  • Gondhalekar, P. (author)
  • Horne, K. (author)
  • Jackson, N. (author)
  • Kollatschny, W. (author)
  • Laurikainen, E. (author)
  • Lawrence, A. (author)
  • Masegosa, J. (author)
  • O'Brien, P. T. (author)
  • del Olmo, A. (author)
  • Penston, M. V. (author)
  • Perea, J. (author)
  • Perez, E. (author)
  • Perez-Fournon, I. (author)
  • Perry, J. J. (author)
  • Robinson, A. (author)
  • Rodriguez Espinosa, J. M. (author)
  • Stirpe, G. M. (author)
  • Tadhunter, C. (author)
  • Terlevich, R. (author)
  • Unger, S. (author)
  • Wagner, S. J. (author)
  • Williams, R. (author)

Related titles

  • In:Astronomy and Astrophysics269:1-2, s. 39-53530004-63611432-0746

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