Journal Article

A new look at the isotropy of narrow-line emission in extragalactic radio sources

Chris Simpson

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 297, issue 2, pages L39-L43
Published in print June 1998 | ISSN: 0035-8711
Published online June 1998 | e-ISSN: 1365-2966 | DOI: https://dx.doi.org/10.1046/j.1365-8711.1998.01678.x
A new look at the isotropy of narrow-line emission in extragalactic radio sources

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We undertake a quantitative investigation, using Monte Carlo simulations, of the amount by which quasars are expected to exceed radio galaxies in optical luminosity in the context of the ‘receding torus’ model. We compare these simulations with the known behaviour of the [O iii] λ5007 and [O iii] λ3727 emission lines and conclude that [O iii] is the better indicator of the strength of the underlying non-stellar continuum.

Keywords: galaxies: active; galaxies: nuclei; quasars: emission lines; radio continuum: galaxies

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Subjects: Astronomy and Astrophysics

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