Galaxy AGN classification
- Galaxy AGN classification
Galaxy AGN classification or galaxy active galactic nucleus classification is classification of galaxies with active galactic nuclei (AGN) in astronomy.
There are two main types of AGNs, Radio-quiet and Radio-loud, which are each broken up into further sub-types.
* Radio-quiet AGN
** Low-ionization nuclear emission-line regions (LINERs).
** Seyfert galaxies
** Radio-quiet quasars/QSOs.
** 'Quasar 2s'.
* Radio-loud AGN
** Radio-loud quasars.
** 'Blazars' (BL Lac objects and OVV quasars).
** Radio galaxies.
ee also
* active galactic nucleus for a more detailed description of the various types of AGNs.
Wikimedia Foundation.
2010.
Look at other dictionaries:
Galaxy classification — is classification by means of and for the discipline of astronomy.* galaxy morphological classification * galaxy AGN classification (galaxy active galactic nucleus classification)There are three main types of Galaxies, barred Spiral, Spiral, and… … Wikipedia
Seyfert galaxy — Seyfert galaxies are a class of galaxies with nuclei that produce spectral line emission from highly ionized gascite book author=L. S. Sparke, J. S. Gallagher III year=2007 title=Galaxies in the Universe: An Introduction publisher=Cambridge… … Wikipedia
Messier 87 — Virgo A The Messier 87 galaxy. Observation data Epoch J2000 Constellation Virgo Right ascension … Wikipedia
BL Lac object — A BL Lacertae object or BL Lac object is a type of active galaxy with an active galactic nucleus (AGN) and is named after its prototype, BL Lacertae. In contrast to other types of active galactic nuclei, BL Lacs are characterized by rapid and… … Wikipedia
Megamaser — A megamaser is a type of astrophysical maser, which is a naturally occurring source of stimulated spectral line emission. Megamasers are distinguished from astrophysical masers by their large isotropic luminosity. Megamasers produce roughly 103… … Wikipedia
NGC 1672 — A Hubble Space Telescope (HST) image of NGC 1672. Observation data (J2000 epoch) Constellation Dorado … Wikipedia
X-ray astronomy — X rays start at 0.008 nm and extend across the electromagnetic spectrum to 8 nm, over which the Earth s atmosphere is opaque. X ray astronomy is an observational branch of astronomy which deals with the study of X ray observation and detection… … Wikipedia
