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MIDI observations of the nuclear obscuring torus in NGC 1068

Published online by Cambridge University Press:  24 November 2004

Walter Jaffe ,
Klaus Meisenheimer ,
Huub Röttgering ,
Christoph Leinert  and
Andrea Richichi
Walter Jaffe
Affiliation:
Leiden Observatory, Neilsbohrweg 2, NL-2333 CA Leiden, Netherlands
Klaus Meisenheimer
Affiliation:
Max-Planck-Institut-für-Astronomie, Köningtuhl 17, D-69117 Heidelberg, Germany
Huub Röttgering
Affiliation:
Leiden Observatory, Neilsbohrweg 2, NL-2333 CA Leiden, Netherlands
Christoph Leinert
Affiliation:
Max-Planck-Institut-für-Astronomie, Köningtuhl 17, D-69117 Heidelberg, Germany
Andrea Richichi
Affiliation:
European Southern Observatory, Karl Schwartzschile Strasse 2, D-85748 Garching be München, Germany
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Abstract

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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.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Type
ORAL CONTRIBUTIONS
Information
Proceedings of the International Astronomical Union , Volume 2004 , Issue IAUS222 , March 2004 , pp. 37 - 39
Copyright
© 2004 International Astronomical Union