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Ch 24 Galaxies Pt 3

Vocabulary

TermDefinition
Normal Galaxy galaxy whose overall energy emission is consistent with the summed light of many stars
Active Galaxies energetic galaxies that emit mostly long-wavelength, non-thermal radiation
Nonstellar Radiation from the accretion of matter by a supermassive black hole at a galaxy's center
Luminous Galaxy emits more energy in the infrared than at all other wavelengths combined
Starburst Galaxy galaxy where a violent event has caused an intense episode of star formation recently
Seyfert Galaxy active galaxy whose emission comes from a very small region within its nucleus
Radio Galaxy active galaxy that emits most of its energy in the form of long-wavelength radiation
Blazar intense AGN in which the observer's line of sight lies directly along the axis of a high-speed jet
Quasar starlike radio source with a redshift that indicates an extremely large distance from Earth
Core-Dominated Galaxy galaxy whose energy jets are seen head on as opposed to from the side
Radio-Lobe roundish extended region of radio-emitting gas, lying beyond the center of a radio galaxy
Jets bipolar beams of matter ejected from some astronomical objects like supermassive black holes
Look-Back Time time in the past when an object emitted the radiation we see today
Active Galactic Nucleus region of intense nonstellar emission at the center of an active galaxy
Supermassive Black Hole a mass millions or billions greater than that of the Sun in a galaxy's center
Dusty Donut clumpy gas and dust torus surrounding an active galactic nucleus
Synchrotron Radiation nonthermal radiation produced by charged particles as they are accelerated in a strong magnetic field
Created by: john_bailey720
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