The Broad Wing of [O III] λ5007 Emission Line in Active Galactic Nuclei

Abstract

We use a type 2 AGN sample from SDSS DR7 in which the [O III] λ5007 emission line can be modeled by two Gaussian components, a broad wing plus a narrow core, to investigate the origin of the broad wing and the connection between the velocity shift of the broad wing and the physical parameters of active galactic nuclei (AGNs) as well as their host galaxies. We find that the flux of the wing components is roughly equal to that of the core components in statistic. However, the velocity shift of the wing component has only weak, if any, correlations with the physical properties of AGNs and the host galaxies such as bolometric luminosity, the Eddington ratio, the mass of supermassive black holes, D4000, HδA or stellar mass. Comparing the velocity shift from our type 2 AGN sample to that from type 1 sample in Zhang et al. (2011), we suggest the [O III] broad wing originates from outflow.

12 pages, 7 figures, Accepted for publication in the RAA

References in corpus (4)

• Fast outflows in compact radio sources: evidence for AGN-induced feedback in the early stages of radio source evolution
• On the nature of Seyfert galaxies with high [OIII]5007 blueshifts
• Type 1 AGN at low z. III. The optical narrow line ratios
• The Baldwin effect in the narrow emission lines of AGNs

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