Seyfert nuclei

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• Seyfert galaxy — /suy feuhrt, see /, Astron. one of a group of spiral galaxies with compact, bright nuclei having characteristically broad emission lines suggestive of very hot gases in violent motion at the center. [1965 70; named after Carl K. Seyfert (1911 60) …   Universalium

• 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

• Seyfert galaxy — noun Etymology: Carl K. Seyfert died 1960 American astronomer Date: 1959 any of a class of spiral galaxies that have small compact bright nuclei characterized by variability in light intensity, emission of radio waves, and spectra called also… …   New Collegiate Dictionary

• seyfert galaxy — ¦sēfə(r)t , ¦sī noun or seyfert ( s) Usage: usually capitalized S Etymology: after Carl K. Seyfert died 1960 American astronomer : any of a class of spiral galaxies that have small compact bright nuclei exhibiting variability in light intensity,… …   Useful english dictionary

• Seyfert galaxy — /ˈsaɪfət/ (say suyfuht) noun one of a number of galaxies with very bright nuclei. {named after Carl K Seyfert, US astronomer} …  

• Galaxia Seyfert — La galaxia Circinus, una galaxia Seyfert 2. Credito: A. S. Wilson, P. L. Shopbell, C. Simpson, T. Storchi Bergmann, F. K. B. Barbosa, M. J. Ward, WFPC2, HST, NASA. En astronomía, las galaxias Seyfert son un tipo de galaxias activas que albergan… …   Wikipedia Español

• Carl Keenan Seyfert — (February 11 1911, Cleveland, Ohio ndash; June 13 1960, Nashville, Tennessee) was an American astronomer.He is best known for his 1943 research paper on high excitation line emission from the centers of some spiral galaxies, which are named… …   Wikipedia

• Multicolor Active Galactic Nuclei Monitoring — or MAGNUM is project started in 1995, and with observations starting in 2000 using 2m reflecting telescope for scientific study of active galactic nuclei. [1] The telescope is run by the University of Tokyo and other Japanese academic… …   Wikipedia

• Galaxy — This article is about the astronomical structure. For other uses, see Galaxy (disambiguation). NGC 4414, a typical spiral galaxy in the constellation Coma Berenices, is about 55,000 light years in diameter and approximately 60 million light… …   Wikipedia

• Low-ionization nuclear emission-line region — cite journal author= L. C. Ho, A. V. Filippenko, W. L. W. Sargent title=A Search for Dwarf Seyfert Nuclei. III. Spectroscopic Parameters and Properties of the Host Galaxies journal=Astrophysical Journal Supplement year=1997 volume=112… …   Wikipedia

• NGC 3227 — and NGC 3226 Observation data (J2000 epoch) Constellation Leo …   Wikipedia