Highly Ionised Gas as a Diagnostic of the Inner NLR

Details Highly Ionised Gas as a Diagnostic of the Inner NLR Highly Ionised Gas as a Diagnostic of the Inner NLR

2010-08-03

arxiv.org/abs/1008.0626v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Proceedings of the IAU Symposium: Co-evolution of Central Black Holes and Galaxies

Scientific paper

The spectra of AGN from the ultraviolet to the near infrared, exhibit emission lines covering a wide range of ionisation states, from neutral species such as [O I] 6300A, up to [Fe XIV] 5303A. Here we report on some recent studies of the properties of highly ionised lines (HILs), plus two case studies of individual objects. Future IFU observations at high spatial and good spectral resolution, will probe the excitation and kinematics of the gas in the zone between the extended NLR and unresolved BLR. Multi-component SED fitting can be used to link the source of photoionisation with the strengths and ratios of the HILs.

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