MIDI observations of the nuclear obscuring torus in NGC 1068
Abstract
We have taken N-band spectra of the nuclear dust regions of NGC 1068 with the newly commissioned Mid-InfrareD-Interferometer (MIDI), with a spatial resolution of ∼10 milliarcsec (∼1 pc). We resolve the near-nuclear emission into a warm component (∼300 K) 2.1×3.4 pc in size and a smaller hot component. We see a strong silicate absorption in front of the central component that differs in form from normal olivine-type profiles. This thick dust structure cannot be supported for the length of the active phase of the AGN by gas pressure or turbulent motions.
- Publication:
-
The Interplay Among Black Holes, Stars and ISM in Galactic Nuclei
- Pub Date:
- November 2004
- DOI:
- 10.1017/S1743921304001401
- Bibcode:
- 2004IAUS..222...37J