Near-IR spectropolarimetry and modeling of NGC 1068

S. Young, J. Hough, D.J. Axon, J. Bailey, M.J. Ward

Research output: Contribution to journalArticlepeer-review


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 languageEnglish
Pages (from-to)513-527
JournalMonthly Notices of the Royal Astronomical Society
Issue number3
Publication statusPublished - 1995


  • Seyfert
  • active galactic nuclei
  • polarization


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