The flux ratio of the [OIII] 5007,4959 lines in AGN: Comparison with theoretical calculations

Details The flux ratio of the [OIII] 5007,4959 lines in AGN: Comparison with theoretical calculations The flux ratio of the [OIII] 5007,4959 lines in AGN: Comparison with theoretical calculations

2006-10-27

arxiv.org/abs/astro-ph/0610848v1

Astronomy and Astrophysics

Astrophysics

Accepted for publication in the MNRAS

Scientific paper

10.1111/j.1365-2966.2006.11238.x

By taking into account relativistic corrections to the magnetic dipole operator, the theoretical [OIII] 5006.843/4958.511 line intensity ratio of 2.98 is obtained. In order to check this new value using AGN spectra we present the measurements of the flux ratio of the [OIII] 4959,5007 emission lines for a sample of 62 AGN, obtained from the Sloan Digital Sky Survey (SDSS) Database and from published observations. We select only high signal-to-noise ratio spectra for which the line shapes of the [OIII] 4959,5007 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.

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