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Optical Spectropolarimetry of Broad Line Active Galaxies

Giannuzzo, M.E.; Corbett, E.A.; Robinson, A.; Young, S.; Hough, J.; Axon, D.J. (Astronomical Society of the Pacific, 1999)

We present new optical spectropolarimetry of two bright type 1 AGNs. The observations are part of a project on broad line active galaxies in which, through data analysis and modelling, we aim to identify the polarization ...

Monitoring the Ha Line in BL Lacertae - Evidence for an Accretion Disk

Corbett, E.A.; Robinson, A.; Hough, J.; Axon, D.J. (Astronomical Society of the Pacific, 1999)

We present new spectroscopic observations of the recently discovered broad Ha line in BL Lacertae. These data, obtained over a period of 30 months, indicate that the line equivalent width is anti-correlated with the continuum ...

A Seyfert Nucleus in BL Lacertae

Axon, D.J.; Corbett, E.A.; Robinson, A.; Hough, J. (Astronomical Society of the Pacific, 1999)

We have obtained spectroscopic observations of the broad Ha line in BL Lacertae over a period of 30 months. These data show that the line equivalent width is anti-correlated with the continuum flux implying that the broad ...

A time-variable scattered component to broad Hα in the Seyfert 1 galaxy Mrk 509

Young, S.; Corbett, S.A.; Giannuzzo, M.E.; Hough, J.; Robinson, A.; Bailey, J.; Axon, D.J. (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 ...

The obscured BLR in the radio galaxy 3C 234

Young, S.; Axon, D.J.; Hough, J.; Fabian, A.C.; Ward, M.J. (1998)

We present spectropolarimetric observations of the radio galaxy 3C 234 at optical and, for the first time, near-IR wavelengths. In agreement with previous observations we detect broad Hα in total and polarized flux, ...

Near-infrared imaging polarimetry of Cygnus A

Packham, C.; Young, S.; Hough, J.; Tadhunter, C.N.; Axon, D.J. (1998)

We present a 2.2-μm polarization image of the nuclear regions of Cygnus A. The degree of polarization in the central 1 arcsec is (4.1±0.50) per cent, at a position angle of (23.6±3.6)°, approximately perpendicular to the ...

The profiles of polarized broad Hα lines in radio galaxies

Corbett, E.A.; Robinson, A.; Axon, D.J.; Young, S.; Hough, J. (1998)

We present spectropolarimetric observations of seven broad-line radio galaxies. We find significantly polarized broad Hα emission in four objects including two, Arp 102B and 3C 390.3, which have double-peaked line profiles. ...

Near-infrared imaging polarimetry of NGC 1068

Packham, C.; Young, S.; Hough, J.; Axon, D.J.; Bailey, J. (1997)

We present near-infrared polarization images of the nuclear region of NGC 1068. For the first time, extended reflection nebulosity from the south-western cone, which is obscured at optical wavelengths, is detected. Polarized ...

Beaming in Radio-Quiet AGN

Young, S.; Hough, J.; Axon, D.J.; Bailey, J. (Astronomical Society of the Pacific, 1997)

We have obtained new optical spectropolarimetric data for the radio-quiet Seyfert NGC 1068, taken through apertures on the nucleus and at two positions within the ionization/scattering cone. The equivalent width of scattered ...

Optical and near-infrared spectropolarimetry of the infrared-luminous galaxy IRAS 23060+0505

Young, S.; Hough, J.; Axon, D.J.; Ward, M.J.; Bailey, J. (1996)

We present optical and near-IR spectropolarimetry of the type 2 infrared-luminous galaxy IRAS 23060+0505, which clearly shows both broad Hα and Paalpha in polarized flux. The full widths at half maximum (FWHM) of these ...