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X-rays and dynamics

Published online by Cambridge University Press:  21 October 2010

Silvia Pellegrini
Silvia Pellegrini*
Affiliation:
Department of Astronomy, University of Bologna, via Ranzani 1, 40127 Bologna, Italy email: [email protected]
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Abstract

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The hot X-ray emitting interstellar medium of early type galaxies can be used in principle as a total mass tracer and a tool to determine the stellar orbital anisotropy, based on the hypothesis of hydrostatic equilibrium for it. Here the effects that deviations from equilibrium have on both estimates are shown, and a comparison is made with cases for which accurate optical and X-ray information are available.

Keywords

galaxies: elliptical and lenticularcD – galaxies: fundamental parameters – galaxies: halos – galaxies: ISM – galaxies: kinematics and dynamics – galaxies: structure
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Highlights H15: Highlights of Astronomy , November 2009 , pp. 91
Copyright
Copyright © International Astronomical Union 2010

References

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