Two component Emden sphere

Details Two component Emden sphere Two component Emden sphere

Nov 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979a%26as...38..295c&link_type=abstract

Astronomy and Astrophysics Supplement Series, vol. 38, Nov. 1979, p. 295-310. Research supported by the Conselho Nacional de Pe

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7

Astronomical Models, Galactic Clusters, Gravitational Fields, Star Clusters, Asymptotic Methods, Density Distribution, Globular Clusters, Isothermal Processes, Spheres, Tables (Data)

Scientific paper

The theory of a self-gravitating gas sphere is given. The gravitational field is generated by two components, each of which is an independent isothermal gas. Various quantities of interest, such as density profiles, core radii of both components, masses, free-free luminosity, surface brightness, central surface density, and overestimate of central mass density, are given for different values of both parameters which arise naturally (ratio of central densities, ratio of rms velocities). Fundamental changes appear when comparison is made with a theory in which the second component is a 'test component'. Procedures are given for the complete analysis of real astrophysical configurations such as clusters of galaxies or globular clusters.

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