期刊
ASTROPHYSICAL JOURNAL
卷 661, 期 1, 页码 L29-L32出版社
UNIV CHICAGO PRESS
DOI: 10.1086/518602
关键词
galaxies : active; galaxies : nuclei; galaxies : Seyfert; infrared : galaxies; instrumentation : polarimeters; polarization
资金
- Science and Technology Facilities Council [PP/D000920/1, PP/C50352X/1] Funding Source: researchfish
We present diffraction-limited, 10 mu m 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.
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