The nuclear spectrum of the radio galaxy NGC 5128 (Centaurus A)

Abstract

We present near-infrared spectra of the nuclear disk in the nearby radio galaxy NGC 5128 (Centaurus A). On the basis of the observed strengths of the [S III] 0.9532um and [Fe II] 1.2567um lines, we classify NGC 5128 as a LINER. Modeling of the strengths of these and additional lines suggests that the nuclear region is powered by shocks rather than photoionization.

12 pages including 2 figures, accepted by ApJ Letters

References in corpus (2)

• A Near Infrared Spectroscopic Survey of LINER Galaxies
• Evidence for a 20pc disk at the nucleus of Centaurus A

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