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Monthly Notices of the Royal Astronomical SocietyVolume 374, Issue 3, January 2007, Pages 1181-1184

The flux ratio of the [O III] λλ5007, 4959 lines in AGN: Comparison with theoretical calculations(Article)(Open Access)

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  • aAstronomical Observatory, Volgina 7, 11160 Belgrade 74, Serbia
  • bDepartment of Astronomy, Faculty of Mathematics, University of Belgrade, Studentski trg 16, 11000 Belgrade, Serbia

Abstract

By taking into account the relativistic corrections to the magnetic dipole operator, the theoretical [O III] 5006.843/4958.911 line intensity ratio of 2.98 is obtained. In order to check this new value using the active galactic nuclei (AGN) spectra, we present the measurements of the flux ratio of the [OIII] λλ4959, 5007 emission lines for a sample of 62 AGN, obtained from the Sloan Digital Sky Survey (SDSS) data base and the published observations. We select only the high signal-to-noise ratio spectra for which the line shapes of the [O III] λλ4959,5007 lines are the same. We obtained an averaged flux ratio of 2.993 ± 0.014, which is in a good agreement with the theoretical one. © 2006 RAS.

Author keywords

Galaxies: activeQuasars: emission linesQuasars: general

Indexed keywords

Engineering controlled terms:GalaxiesSignal to noise ratio
Engineering uncontrolled termsActive galactic nucleiDipole operatorsFlux ratioGalaxies activeLine intensity ratioQuasars: emission lineQuasars:generalRelativistic correctionSpectra'sTheoretical calculations
Engineering main heading:Electromagnetic wave emission
  • ISSN: 00358711
  • CODEN: MNRAA
  • Source Type: Journal
  • Original language: English
  • DOI: 10.1111/j.1365-2966.2006.11238.x
  • Document Type: Article
  • Publisher: Blackwell Publishing Ltd

  Dimitrijević, M.S.; Astronomical Observatory, Volgina 7, Serbia;
© Copyright 2022 Elsevier B.V., All rights reserved.

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