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Session 67 - ISM in Galaxies.
Display session, Wednesday, January 15
Metropolitan Ballroom,

[67.11] The Interaction Between Stellar Mass Loss and the ISM in Ellipticals

J. R. Parriott, J. N. Bregman (U. Michigan)

Stellar mass loss is thought to be the dominant source of hot gas in elliptical galaxies, but calculations have yet to accurately treat the processes by which this mass loss enters the ambient interstellar medium. The details of this interaction have direct implications for resolving several important disagreements between observations and the standard cooling flow model, and we suggest a mechanism for the interaction which could mitigate these disagreements. We test this new picture by conducting a series of highly accurate two dimensional numerical hydrodynamic simulations of the complex interaction between the stellar ejecta and the surrounding hot medium. These calculations are parallelized using a portable message passing standard, and carried out on an IBM SP2 distributed memory parallel machine.

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Program listing for Wednesday