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Molecular emission in the active galactic nucleus of NGC 1068

Published online by Cambridge University Press:  24 November 2004

Emmanuel Galliano
ESO, Casilla 19001, Santiago, Chile
Danielle Alloin
ESO, Casilla 19001, Santiago, Chile
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We provide an overview of a high spatial resolution study of the molecular emission (H2 and CO) in the few central arcsec region around the AGN in NGC1068. A 0.5″ resolution H2 2.12 μm line map obtained with VLT/ISAAC is presented and reveals interesting characteristics: two unequally bright knots located at 1″ (70 pc) from the nucleus, along a direction perpendicular to the ionizing cone axis. We propose a model involving differential extinction, produced in the emitting molecular disc itself, to explain the intensity difference between the two knots. This effect can arise from a simple configuration, in which the orientation of the molecular disc is slightly tilted with respect to that of the central Compton thick absorber, which blocks the X-rays along our line of sight.To search for other articles by the author(s) go to:

© 2004 International Astronomical Union