Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Seyfert_galaxy> ?p ?o }
- Seyfert_galaxy abstract "Seyfert galaxies are one of the two largest groups of active galaxies, along with quasars. They have quasar-like nuclei (very luminous, distant and bright sources of electromagnetic radiation) with very high surface brightnesses whose spectra reveal strong, high-ionisation emission lines, but unlike quasars, their host galaxies are clearly detectable.Seyfert galaxies account for about 10% of all galaxies and are some of the most intensely studied objects in astronomy, as they are thought to be powered by the same phenomena that occur in quasars, although they are closer and less luminous than quasars. These galaxies have supermassive black holes at their centers which are surrounded by accretion discs of in-falling material. The accretion discs are believed to be the source of the observed ultraviolet radiation. Ultraviolet emission and absorption lines provide the best diagnostics for the composition of the surrounding material.Seen in visible light, most Seyfert galaxies look like normal spiral galaxies, but when studied under other wavelengths, it becomes clear that the luminosity of their cores is of comparable intensity to the luminosity of whole galaxies the size of the Milky Way.Seyfert galaxies are named after Carl Seyfert, who first described this class in 1943.".
- Seyfert_galaxy thumbnail Circinus.galaxy.750pix.jpg?width=300.
- Seyfert_galaxy wikiPageExternalLink active_galaxies.html.
- Seyfert_galaxy wikiPageExternalLink seyferts.html.
- Seyfert_galaxy wikiPageExternalLink level2a.php?p=0&cat=5&subcat=3.
- Seyfert_galaxy wikiPageID "206919".
- Seyfert_galaxy wikiPageLength "47002".
- Seyfert_galaxy wikiPageOutDegree "139".
- Seyfert_galaxy wikiPageRevisionID "680533927".
- Seyfert_galaxy wikiPageWikiLink Absorption_lines.
- Seyfert_galaxy wikiPageWikiLink Absorption_spectroscopy.
- Seyfert_galaxy wikiPageWikiLink Absorption_spectrum.
- Seyfert_galaxy wikiPageWikiLink Accretion_disc.
- Seyfert_galaxy wikiPageWikiLink Active_galactic_nucleus.
- Seyfert_galaxy wikiPageWikiLink Astronomical_object.
- Seyfert_galaxy wikiPageWikiLink Astronomical_radio_source.
- Seyfert_galaxy wikiPageWikiLink Astronomy.
- Seyfert_galaxy wikiPageWikiLink Astrophysical_jet.
- Seyfert_galaxy wikiPageWikiLink Atomic_electron_transition.
- Seyfert_galaxy wikiPageWikiLink Balmer_series.
- Seyfert_galaxy wikiPageWikiLink Benjamin_Markarian.
- Seyfert_galaxy wikiPageWikiLink Blazar.
- Seyfert_galaxy wikiPageWikiLink B♭_(musical_note).
- Seyfert_galaxy wikiPageWikiLink Carl_Keenan_Seyfert.
- Seyfert_galaxy wikiPageWikiLink Category:Active_galaxy_types.
- Seyfert_galaxy wikiPageWikiLink Category:Seyfert_galaxies.
- Seyfert_galaxy wikiPageWikiLink Centaurus_A.
- Seyfert_galaxy wikiPageWikiLink Circinus_Galaxy.
- Seyfert_galaxy wikiPageWikiLink Compton_scattering.
- Seyfert_galaxy wikiPageWikiLink Corona.
- Seyfert_galaxy wikiPageWikiLink Cosmic_inflation.
- Seyfert_galaxy wikiPageWikiLink Cygnus_A.
- Seyfert_galaxy wikiPageWikiLink Disc_wind.
- Seyfert_galaxy wikiPageWikiLink Donald_Edward_Osterbrock.
- Seyfert_galaxy wikiPageWikiLink Doppler_broadening.
- Seyfert_galaxy wikiPageWikiLink Doppler_effect.
- Seyfert_galaxy wikiPageWikiLink Doppler_shift.
- Seyfert_galaxy wikiPageWikiLink Eddington_luminosity.
- Seyfert_galaxy wikiPageWikiLink Edward_A._Fath.
- Seyfert_galaxy wikiPageWikiLink Edwin_Hubble.
- Seyfert_galaxy wikiPageWikiLink Electromagnetic_spectrum.
- Seyfert_galaxy wikiPageWikiLink Emission_lines.
- Seyfert_galaxy wikiPageWikiLink Emission_spectra.
- Seyfert_galaxy wikiPageWikiLink Emission_spectrum.
- Seyfert_galaxy wikiPageWikiLink Extragalactic_astronomy.
- Seyfert_galaxy wikiPageWikiLink File:ESO_Centaurus_A_LABOCA.jpg.
- Seyfert_galaxy wikiPageWikiLink File:Messier51.jpg.
- Seyfert_galaxy wikiPageWikiLink Forbidden_mechanism.
- Seyfert_galaxy wikiPageWikiLink Galactic_evolution.
- Seyfert_galaxy wikiPageWikiLink Galaxy_formation_and_evolution.
- Seyfert_galaxy wikiPageWikiLink H-alpha.
- Seyfert_galaxy wikiPageWikiLink H-beta.
- Seyfert_galaxy wikiPageWikiLink Helium.
- Seyfert_galaxy wikiPageWikiLink Hydrogen.
- Seyfert_galaxy wikiPageWikiLink IC_2560.
- Seyfert_galaxy wikiPageWikiLink Inflation_(cosmology).
- Seyfert_galaxy wikiPageWikiLink Infrared.
- Seyfert_galaxy wikiPageWikiLink Interferometry.
- Seyfert_galaxy wikiPageWikiLink Intermediate-mass_black_hole.
- Seyfert_galaxy wikiPageWikiLink Ionisation.
- Seyfert_galaxy wikiPageWikiLink Ionization.
- Seyfert_galaxy wikiPageWikiLink Leo_Triplet.
- Seyfert_galaxy wikiPageWikiLink Lick_Observatory.
- Seyfert_galaxy wikiPageWikiLink Light.
- Seyfert_galaxy wikiPageWikiLink Local_Supercluster.
- Seyfert_galaxy wikiPageWikiLink Low-ionization_nuclear_emission-line_region.
- Seyfert_galaxy wikiPageWikiLink Low-surface-brightness_galaxy.
- Seyfert_galaxy wikiPageWikiLink Low_surface_brightness_galaxy.
- Seyfert_galaxy wikiPageWikiLink Luminosity.
- Seyfert_galaxy wikiPageWikiLink Luminous_infrared_galaxy.
- Seyfert_galaxy wikiPageWikiLink Markarian_galaxies.
- Seyfert_galaxy wikiPageWikiLink Megamaser.
- Seyfert_galaxy wikiPageWikiLink Messier_106.
- Seyfert_galaxy wikiPageWikiLink Messier_51.
- Seyfert_galaxy wikiPageWikiLink Messier_66.
- Seyfert_galaxy wikiPageWikiLink Messier_77.
- Seyfert_galaxy wikiPageWikiLink Messier_81.
- Seyfert_galaxy wikiPageWikiLink Messier_87.
- Seyfert_galaxy wikiPageWikiLink Messier_88.
- Seyfert_galaxy wikiPageWikiLink Metallicity.
- Seyfert_galaxy wikiPageWikiLink Milky_Way.
- Seyfert_galaxy wikiPageWikiLink NGC_1068.
- Seyfert_galaxy wikiPageWikiLink NGC_1097.
- Seyfert_galaxy wikiPageWikiLink NGC_1275.
- Seyfert_galaxy wikiPageWikiLink NGC_1365.
- Seyfert_galaxy wikiPageWikiLink NGC_1566.
- Seyfert_galaxy wikiPageWikiLink NGC_1672.
- Seyfert_galaxy wikiPageWikiLink NGC_1808.
- Seyfert_galaxy wikiPageWikiLink NGC_262.
- Seyfert_galaxy wikiPageWikiLink NGC_3079.
- Seyfert_galaxy wikiPageWikiLink NGC_3185.
- Seyfert_galaxy wikiPageWikiLink NGC_3259.
- Seyfert_galaxy wikiPageWikiLink NGC_3783.
- Seyfert_galaxy wikiPageWikiLink NGC_3982.
- Seyfert_galaxy wikiPageWikiLink NGC_4151.
- Seyfert_galaxy wikiPageWikiLink NGC_4395.
- Seyfert_galaxy wikiPageWikiLink NGC_4725.
- Seyfert_galaxy wikiPageWikiLink NGC_4945.
- Seyfert_galaxy wikiPageWikiLink NGC_5033.
- Seyfert_galaxy wikiPageWikiLink NGC_5548.