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Hot Gas Flows in Elliptical Galaxies

Published online by Cambridge University Press:  25 May 2016

Alvio Renzini
Alvio Renzini*
Affiliation:
European Southern Observatory, Garching bei München, Germany

Extract

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Stars in elliptical galaxies lose mass at an overall present rate Ṁ∗ ≃ 1.5 × 10−11LBM⊙yr−1 (e.g., Faber & Gallagher 1976; Renzini & Buzzoni 1986). When allowing for the predicted increase back with cosmological time it turns out that over one Hubble time the stellar population of an elliptical galaxy has cumulatively lost 20-50% of its initial mass, the precise value depending on the IMF. This review focuses on two simple questions: what happens to the gas being lost by the stars? Where is it ultimately disposed?

Type
The Interstellar Medium
Information
Symposium - International Astronomical Union , Volume 171: New Light on Galaxy Evolution , 1996 , pp. 131 - 138
Copyright
Copyright © Kluwer 1996 

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