Abstract
We present a new class of 1D hydrodynamical evolutionary sequences for the gas flows in elliptical galaxies. The model galaxies are described by either King’s or de Vaucouleurs’ virialized density distributions, and are surrounded by variable amounts of dark matter. Two source terms operate: mass loss from evolving red giants, and a secularly declining heating by type I supernovae. The resulting model galaxies evolve through up to three consecutive evolutionary stages, that we call wind, outflow, and inflow phase. Agreement with the observed trends of the X-ray luminosity with the optical characteristics of the galaxies is achieved for models in which the dark to visible mass ratios is around ten, when the standard SNI rate is assumed.
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© 1992 Springer Science+Business Media Dordrecht
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Ciotti, L., D’Ercole, A., Pellegrini, S., Renzini, A. (1992). Elliptical Galaxies in X-Rays. In: Longo, G., Capaccioli, M., Busarello, G. (eds) Morphological and Physical Classification of Galaxies. Astrophysics and Space Science Library, vol 178. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-2522-2_14
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DOI: https://doi.org/10.1007/978-94-011-2522-2_14
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