extragalactic astrophysics

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• Extragalactic cosmic ray — Extragalactic cosmic rays are very high energy particles that flow into our solar system from beyond our galaxy. The energies these particles possess are in excess of 1015 eV. Origin Unlike solar or galactic cosmic rays, little is known about the …   Wikipedia

• Astrophysics Data System — Logo of the ADS The Astrophysics Data System (usually referred to as ADS), developed by the National Aeronautics and Space Administration (NASA), is an online database of over eight million astronomy and physics papers from both peer reviewed and …   Wikipedia

• Extragalactic distance scale — The extragalactic distance scale is a series of techniques used today by astronomers to determine the distance of cosmological bodies (beyond our own galaxy) not easily obtained with traditional methods. Some procedures utilize properties of… …   Wikipedia

• Harvard-Smithsonian Center for Astrophysics — ▪ research institution, Cambridge, Massachusetts, United States Introduction       astronomical research institution headquartered in Cambridge, Massachusetts, U.S., on the campus of Harvard University. The CfA was created in 1973 by reorganizing …   Universalium

• NASA/IPAC Extragalactic Database — The NASA/IPAC Extragalactic Database (NED) is an on line astronomical database for astronomers that collates and cross correlates astronomical information on extragalactic objects (galaxies, quasars, radio, x ray and infrared sources, etc.). NED… …   Wikipedia

• Astrophysical Institute Potsdam — (AIP) is a German research institute. It is the successor of the Berlin Observatory founded in 1700 and of the Astrophysical Observatory Potsdam founded in 1874. The latter was the world s first observatory to emphasize explicitly the research… …   Wikipedia

• James Binney — James Binney, FRS, FInstP (born 1950) is a British astrophysicist. He is currently a Professor of Physics at the University of Oxford, where he holds a position in the Sub Department of Theoretical Physics as well as a Professorial Fellowship at… …   Wikipedia

• Charles C. Steidel — (born October 14, 1962 Ithaca, New York) is an American astronomer, and Lee A. DuBridge Professor of Astronomy at California Institute of Technology.[1] He graduated from Princeton University with an A. B., in Astrophysical Sciences, and from… …   Wikipedia

• Cosmic distance ladder — * Light green boxes: Technique applicable to star forming galaxies. * Light blue boxes: Technique applicable to Population II galaxies. * Light Purple boxes: Geometric distance technique. * Light Red box: The planetary nebula luminosity function… …   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

• cosmos — /koz meuhs, mohs/, n., pl. cosmos, cosmoses for 2, 4. 1. the world or universe regarded as an orderly, harmonious system. 2. a complete, orderly, harmonious system. 3. order; harmony. 4. any composite plant of the genus Cosmos, of tropical… …   Universalium