Abstract
We present new spectropolarimetric data for NGC 1068, including, for the first time, coverage in the near-IR. Using these, and other previously published data, we develop a scattering model for NGC 1068, using NGC 5548 for the underlying Seyfert 1 continuum spectrum and M31 for the stellar contribution. Although electron scattering is the dominant process, if NGC 5548 is typical of Seyfert 1s in the near-IR then electron scattering alone cannot be soley responsible for the observed polarization of NGC 1068 at these wavelengths, and a contribution from dichroic absorption of the radiation from the IR-emitting regions of the active nucleus, through the postulated torus, is required. The extinction in this region is A_V>=45 mag, although we note that the extinction to broad-line region and nucleus is much higher.
| Original language | English |
|---|---|
| Pages (from-to) | 513-527 |
| Journal | Monthly Notices of the Royal Astronomical Society (MNRAS) |
| Volume | 272 |
| Issue number | 3 |
| Publication status | Published - 1995 |
Keywords
- Seyfert
- active galactic nuclei
- polarization
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