The nuclear torus in the active galaxy NGC 1068

被引:36
|
作者
Young, S
Packham, C
Hough, JH
Efstathiou, A
机构
[1] Division of Physical Sciences, University of Hertfordshire, Hatfield
关键词
polarization; scattering; galaxies; active; individual; NGC; 1068; Seyfert; infrared;
D O I
10.1093/mnras/283.1.L1
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present near-infrared polarized images of the active galaxy NGC 1068. At these wavelengths, the counter-cone-is observed in scattered light. At H (1.64 mu m) we detect an absorption band across the counter-cone, which we interpret as absorption owing to the postulated torus. From a geometrical analysis we calculate that the torus is at a position angle of 32 degrees+/-3 degrees on the plane of the sky, at an inclination to the line of sight (defined with respect to the polar axis) of 42 degrees+/-4 degrees, with a physical diameter greater than 200 pc. These figures are consistent with those derived from our models for the scattering of nuclear radiation and for the far-infrared emission from the torus.
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页码:L1 / L5
页数:5
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