Extended near-ultraviolet continuum emission and the nature of the polarized broad-line Seyfert 2 galaxies

Astronomy and Astrophysics – Astrophysics

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Active Galactic Nuclei, Galactic Radiation, Near Ultraviolet Radiation, Seyfert Galaxies, Ultraviolet Emission, Emission Spectra, Ultraviolet Photometry

Scientific paper

Narrow-band emission-line and continuum imaging in subarsecond seeing conditions are presented for three Seyfert 2 galaxies: NGC 1068, Mrk 3, and Mrk 573. These images reveal, in addition to a wealth of emissionline structure, an extended, diffuse excess near-UV (3600 A) continuum component that has a conical or biconical morphology aligned with the radio axes of these galaxies. The nature of the diffuse excess near-UV continuum emission, which we interpret as scattered nuclear continuum light, and its implications for current models of Seyfert nuclei are discussed.

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