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Nicmos polarimetry of "polar-scattered" seyfert 1 galaxies
(2011-09-01)
The nuclei of Seyfert 1 galaxies exhibit a range of optical polarization characteristics that can be understood in terms of two scattering regions producing orthogonal polarizations: an extended polar scattering region ...
Constraints on the nuclear emission of the Circinus galaxy : optical and near-IR spectropolarimetry
(2000)
We present optical and, for the first time, K-band spectropolarimetry of the nuclear region of the Circinus galaxy. In the optical we confirm the previous discovery of polarized broad Hα. We have not detected polarized ...
A near-infrared polarized bipolar cone in the Circinus galaxy
(2000)
We present near–infrared broad–band polarization images of the nuclear regions of the Circinus galaxy in the J, H and K bands. For the first time the south–eastern reflection cone is detected in polarized light, which is ...
Highly polarized structures in the near-nuclear regions of Cygnus A: intrinsic anisotropy within the cones
(2000)
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 ...
A time-variable scattered component to broad Hα in the Seyfert 1 galaxy Mrk 509
(1999)
We present optical spectropolarimetry data for the Seyfert 1 galaxy Mrk 509 for three epochs: 1996 August and 1997 May and August. We confirm previous findings that broad Hα has a significantly greater width in the polarized ...