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Paper: The Narrow-line Region: Current Models and Future Questions
Volume: 373, The Central Engine of Active Galactic Nuclei
Page: 511
Authors: Groves, B.
Abstract: I present a broad overview of modelling of the narrow-line region (NLR) of active galaxies, and discuss some of the more recent models we currently have for the emission from the NLR. I show why the emission-line ratios from the NLR are constrained to certain observed values, and describe what physical parameters we can derive from observations using emission-line models. Also presented are some examples of this, looking at the metallicity and excitation mechanism of active galaxies. As a final point, the limitations of the current models are discussed, and how the combination of modelling and theory can help us solve some of the questions that still remain within the NLR.
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