Browsing Meeting minutes, announcements and publications from RIT Colleges by Author "Young, Stuart"
Now showing items 1-5 of 5
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Equatorial scattering and the structure of the broad-line region in Seyfert nuclei: Evidence for a rotating disc
Smith, James; Robinson, Andrew; Young, Stuart; Axon, David; Corbett, Elizabeth (Blackwell Publishing: Monthly Notices of the Royal Astronomical Society, 2005-05)We present detailed scattering models confirming that distinctive variations in polarization across the broad Halpha line, which are observed in a significant fraction of Seyfert 1 galaxies, can be understood in terms of ... -
Highly polarized structures in the near-nuclear regions of Cygnus A: Intrinsic anisotropy within the cones?
Tadhunter, Clive; Sparks, William; Axon, David; Bergeron, Louis; Jackson, Neal; Packham, Christopher; Hough, James; Robinson, Andrew; Young, Stuart (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 ... -
The rotating wind of the quasar PG 1700+518
Young, Stuart; Axon, David; Robinson, Andrew; Hough, James; Smith, James (Nature Publishing Group, 2008-02-27)It is now widely accepted that most galaxies undergo an active phase, during which a central super-massive black hole generates vast radiant luminosities through the gravitational accretion of gas1,2. Winds launched from ... -
Seyferts on the edge: Polar scattering and orientation-dependent polarization in Seyfert 1 nuclei
Smith, James; Robinson, Andrew; Alexander, David; Young, Stuart; Axon, David; Corbett, Elizabeth (Blackwell Publishing: Monthly Notices of the Royal Astronomical Society, 2004-05)We have identified 12 Seyfert 1 galaxies that exhibit optical polarization spectra similar to those of Seyfert 2 galaxies in which polarized broad-lines are detected. We present new spectropolarimetric observations of 3 ... -
A spectropolarimetric atlas of Seyfert 1 galaxies
Smith, James; Young, Stuart; Robinson, Andrew; Corbett, Elizabeth; Giannuzo, Ester; Axon, David; Hough, James (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 ...