Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981crasb.293..505d&link_type=abstract
Academie des Sciences (Paris), Comptes Rendus, Serie II - Mecanique, Physique, Chimie, Sciences de l'Univers, Sciences de la Ter
Astronomy and Astrophysics
Astronomy
1
Astronomical Models, Dynamic Models, Galactic Clusters, Mass Distribution, Velocity Distribution, Boltzmann Distribution, Galactic Radiation, Gravitational Fields, Luminosity, Radial Distribution, Temperature Gradients, X Ray Sources
Scientific paper
A survey of available data on Coma cluster galaxies has led to the definition of a dynamic model which takes into account the mass spectra, the observed temperature gradients, the individual galaxies, and the X ray source plasma. An a priori type of variation is given to the temperature gradient, and the distribution function at a point of masses and speeds is a Boltzmann distribution with temperature depending on mass and varying with position. The model also considers the contribution of the gravitational potential to the X ray emission, with the gas regarded as virialized in the potential well. The volumetric masses of the galaxy are calculable at all points, and further work to apply the parameters of length unity, the unity of quadratic speed, and the central numerical density to deduce the mass of each component and the free-free luminosity of the gas is indicated.
des Forets G.
Domínguez-Tenreiro Rosa
Gerbal Daniel
Mathez Guy
Mazure Alain
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