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PX269 Galaxies. Part 5: Galactic nuclei 5.1 Active galaxies. Seyfert galaxies. NGC 5548 (Seyfert galaxy). NGC 3277 (normal galaxy). Typical galaxy spectrum (optical). Optical spectra of Seyfert nuclei. Type 1(broad allowed lines). Type 2 (narrow lines). XMM-Newton X-ray telescope.
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PX269 Galaxies Part 5: Galactic nuclei 5.1 Active galaxies
Seyfert galaxies NGC 5548 (Seyfert galaxy) NGC 3277 (normal galaxy)
Optical spectra of Seyfert nuclei Type 1(broad allowed lines) Type 2 (narrow lines)
X-ray spectra of active galaxies Type 1 Type 2 Type 2 Type 1
X-rays Broadband energy spectrum
Optical jet in M87 a nearby gE galaxy HST
NGC1068 Crucial evidence supporting unified model Total flux Type 2 spectrum Polarised flux Type 1 spectrum
Transition between Type 1 and 2 in a single object 1984: Type 2 1974: Type 1
Part 5: Galactic nuclei 5.2 Super-massive black holes in normal galaxies
Kormendy 1988 Evidence for a super-massive black hole at the nucleus of M31
Very Large Telescope (VLT) European Southern Observatory (ESO) in Chile
The M-Sigma relation Tremaine et al 2002, ApJ 574, 740
Kormendy 1988 Evidence for a super-massive black hole at the nucleus of M31