Observing the Seyfert 2 nucleus of NGC 1068 with the VLT Interferometer

Details Observing the Seyfert 2 nucleus of NGC 1068 with the VLT Interferometer Observing the Seyfert 2 nucleus of NGC 1068 with the VLT Interferometer

2005-07-10

arxiv.org/abs/astro-ph/0507236v1

Proc.SPIE Int.Soc.Opt.Eng.5491:9R,2004

Astronomy and Astrophysics

Astrophysics

10 pages, 3 figures, published in Proceedings of SPIE Volume 5491 "New Frontiers in Stellar Interferometry"

Scientific paper

Dusty tori have been suggested to play a crucial role in determining the physical characteristics of active galactic nuclei (AGN), but investigation of their properties has stalled for lack of high resolution mid-IR imaging. Recently, a long-awaited breakthrough in this field was achieved: NGC 1068, a nearby AGN, was the first extragalactic object to be observed with a mid-IR interferometer, thereby obtaining the needed angular resolution to study the alleged torus. In this proceeding, first the field of AGN research is briefly reviewed, with an emphasis on models of dusty tori. Second, the general properties of the key object NGC 1068 are discussed. Third, the MIDI mid-IR interferometric data set is presented together with a first attempt to interpret this data in the context of tori models. Fourth, preliminary MIDI interferometric spectra of the nucleus of the nearby starbursting galaxy Circinus are presented. Finally, we briefly discuss the prospects of ESA's Darwin mission for observing nearby and distant AGN. This mission will allow detailed mapping of tori of low luminosity AGN such as NGC 1068 up to redshifts of 1 - 2 and more luminous AGN up to redshift of 10 and beyond (abridged).

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