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- W2158608690 abstract "We present J, H and K-band images and 0.9–2.5 µm spectra of the nuclear regions of Centaurus A obtained with IRIS on the AAT. While K band has a point source coincident with the nucleus, at H and J we identify diffuse structure extending to the NE as a possible ionisation cone. By considering the NIR colours we show that the point-like K-band emission originates not from the nucleus itself, but from dust which has been shock heated by nuclear outflows. A J K image reveals a band of high extinction across the nucleus lying perpendicular to the radio jet axis, as suggested by previous authors (Israel et al. 1990, Turner et al. 1992). We model the detailed structure of this extinction image with a circumnuclear torus of diameter 240±20pc, thickness 75±4pc, tilt 80±2degrees to the line of sight and with the torus and radio jet axes aligned." @default.
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- W2158608690 date "1999-09-19" @default.
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- W2158608690 title "An infrared study of Centaurus A" @default.
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- W2158608690 doi "https://doi.org/10.1046/j.1365-8711.1999.02722.x" @default.
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