Quasars and Active Galactic
Nuclei (AGNs)
• What are they?
– Observational Properties
– Standard Model
• Continuum, Lines, etc.
• How are they found?
– A variety of survey types, a zoo of AGNs
– Orientation and Unified Models
• How do they evolve?
– Strongly!
• Relationship with their host galaxies
– Host galaxies
– Reverberation
– Mutual Evolution?