Titlebook: Galaxies and Cosmology; Fran?oise Combes,Patrick Boissé,Alain Blanchard Textbook 1995 Springer-Verlag Berlin Heidelberg 1995 Universe.acti

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The Pairing-Plus-Quadrupole Model,jority of them are stars belonging to our Galaxy, the Milky Way. Even on a very clear night, careful observation will enable only several thousand to be discerned. However, our Galaxy contains around 100 billion.

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,Strong Interactions in Λ-Hypernuclei,se waves provide a beautiful solution to the problem in the majority of cases. Before going into the details of this theory (in Section 5.2), we must first tackle the problem of the gravitational stability of a galactic disc and define the main characteristics of the orbits of stars in a rotating disc (the theory of epicycles).

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General Introduction,jority of them are stars belonging to our Galaxy, the Milky Way. Even on a very clear night, careful observation will enable only several thousand to be discerned. However, our Galaxy contains around 100 billion.

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Textbook 1995edium; galactic kinematics; elliptical, spiral, and barred spiral galaxies; the interactions between galaxies; extragalactic radio sources, quasars and their line spectra, and other active galactic nuclei; the formation of galaxies; the Universe as a whole; and cosmology.

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The Galactic Interstellar Medium,s up to 10. K in ionized regions heated by young stars. Hydrogen forms the bulk of the interstellar gas, helium around 25%. Other elements are present in trace amounts. The interstellar gas is enriched by heavy elements ejected by stars (in supernova explosions and stellar winds).

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The Absorption-Line Systems of Quasars,biguously identified. In Figure 10.1 the spectrum of another quasar, 1209+107, obtained with a photon-counting detector, is shown: in addition to the 3 emission lines (Lyα, N Vλ1240, and Si IVλ1393), 19 absorption lines were detected.