Abstract
We present diffraction-limited, 10 μm imaging polarimetry data for the central regions of the archetypal Seyfert active galactic nucleus NGC 1068. The position angle of polarization is consistent with three dominant polarizing mechanisms. We identify three distinct regions of polarization: (1) north of the nucleus, arising from aligned dust in the narrow emission line region, (2) south, east, and west of the nucleus, consistent with dust being channeled toward the central engine, and (3) a central minimum of polarization consistent with a compact (≤22 pc) torus. These observations provide continuity between the geometrically and optically thick torus and the host galaxy's nuclear environments. These images represent the first published mid-IR polarimetry from an 8 m-class telescope and illustrate the potential of such observations.
Document Type
Article
Publication Date
5-20-2007
Digital Object Identifier (DOI)
http://dx.doi.org/10.1086/518602
Repository Citation
Packham, C.; Young, S.; Fisher, S.; Volk, K.; Mason, R.; Hough, J. H.; Roche, P. F.; Elitzur, Moshe; Radomski, J.; and Perlman, E., "Gemini Mid-IR Polarimetry of NGC 1068: Polarized Structures around the Nucleus" (2007). Physics and Astronomy Faculty Publications. 205.
https://uknowledge.uky.edu/physastron_facpub/205
Notes/Citation Information
Published in The Astrophysical Journal Letters, v. 661, no. 1, p. L29-L32.
© 2007. The American Astronomical Society. All rights reserved.
The copyright holder has granted permission for posting the article here.