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The Circinus Galaxy, a Type II Seyfert galaxy. Seyfert galaxies are one of the two largest groups of active galaxies, along with quasar host galaxies. They have quasar-like nuclei (very luminous sources of electromagnetic radiation that are outside of our own galaxy) with very high surface brightnesses whose spectra reveal strong, high-ionisation emission lines, [1] but unlike quasars, their ...
Closest Seyfert galaxy Circinus Galaxy: Circinus: 13 Mly Closest undisputed Seyfert galaxy. It has been proposed that the nearby (2.05 Mly) dwarf galaxy NGC 185 may also be a Seyfert, [39] though this status has been disputed. [40] Most distant Seyfert galaxy HSC 0921+0007: Hydra: z=6.56 [41] Seyfert 1 galaxy; also a low-luminosity quasar ...
Pages in category "Seyfert galaxies" The following 185 pages are in this category, out of 185 total. This list may not reflect recent changes. ...
Seyfert's Sextet is a group of galaxies about 190 million light-years away [2] in the constellation Serpens. The group appears to contain six members, but one of the galaxies, NGC 6027d , is a background object (700 million light years behind the group) and another "galaxy," NGC 6027e , is actually a part of the tail from galaxy NGC 6027 .
It is classified as a Type 2 Seyfert galaxy [4] and was discovered by Francis Leavenworth in 1886. [1] [7] The galactic plane is inclined at an angle of 73°, giving it an oval, nearly edge-on appearance with the major axis aligned along a position angle of 150°. [4] Seyfert galaxies such as NGC 5793 are known to house megamasers.
The luminosity class of NGC 1320 is I and it is an active Seyfert 2 galaxy. [1] NGC 1320 is a galaxy whose core shines in the ultraviolet region. It is listed in the Markarian catalog under the symbol Mrk 607 (MK 607). [3] To date, a non-redshift-based measurement gives a distance of approximately 37,700 Mpc (∼123 million ly). [4]
NGC 3147 has been characterised as a Seyfert II galaxy. It is considered the best candidate to be a true type II Seyfert galaxy, [4] galaxies which feature optical/UV spectrum lacking broad emission lines due to the lack of the broad line region rather than its obscuration, since the nucleus is simultaneously seen unobscured in the X-rays.
NGC 4395 is a nearby low surface brightness spiral galaxy located about 14 million light-years (or 4.3 Mpc) from Earth in the constellation Canes Venatici. [1] The nucleus of NGC 4395 is active and the galaxy is classified as a Seyfert Type I known for its very low-mass supermassive black hole.