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Now showing items 11-15 of 15
A spectropolarimetric atlas of Seyfert 1 galaxies
(Blackwell Publishing: Monthly Notices of the Royal Astronomical Society, 2002-09-27)
We present optical spectropolarimetry of the nuclei of 36 Seyfert 1 galaxies, obtained with the William Herschel and the Anglo–Australian Telescopes from 1996 to 1999. In 20 of these, the optical emission from the active ...
The evidence for jet-cloud interactions in a sample of high/intermediate-redshift radio galaxies
(Blackwell Publishing: Monthly Notices of the Royal Astronomical Society, 2001-05)
We present detailed long-slit spectroscopic observations of a sample of four powerful
radio galaxies, with intermediate/high redshifts (0.47 < z < 0.81). The observations cover the rest-wavelength range 2600 °A- 6600 °A, ...
Testing the photoionization models of powerful radio galaxies: Mixed line-emitting media in 3C 321
(Blackwell Publishing: Monthly Notices of the Royal Astronomical Society, 2000-10)
The photoionization models for the narrow emission line regions of powerful radio galaxies have yet to be tested in depth. To this end, we present high-quality long-slit spectroscopy of the powerful double-nucleus radio ...
The large scale distribution of warm ionized gas around nearby radio galaxies with jet-cloud interactions
(Blackwell Publishing: Monthly Notices of the Royal Astronomical Society, 2000-06)
Deep, narrow-band Halpha observations taken with the TAURUS Tunable Filter (TTF) on the 4.2m WHT telescope are presented for two nearby radio galaxies with strong jet-cloud interactions. Although the brightest emission ...
Highly polarized structures in the near-nuclear regions of Cygnus A: Intrinsic anisotropy within the cones?
(Blackwell Publishing: Monthly Notices of the Royal Astronomical Society, 2000-04)
We present near-IR imaging polarimetry observations of the nucleus of Cygnus A, taken with the NICMOS camera of the HST at a wavelength of 2.0µm. These maps reveal a highly collimated region of polarized emission straddling ...