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Session 95 - X-Ray Galaxies and Clusters.
Oral session, Wednesday, January 17
La Condesa, Hilton

[95.06] ASCA Observations of Low-Luminosity Elliptical Galaxies

M. Loewenstein (NASA/GSFC Lab. for High Energy Astrophysics/USRA)

The ASCA satellite, with its moderate energy resolution and broad bandpass x-ray detectors, has provided many new insights into the nature of the x-ray emission from elliptical galaxies. While the emission from luminous galaxies is dominated by \sim 0.7 keV hot gas, a hard component is present and sometimes dominant in fainter systems. I will discuss the nature of this hard component, the implications of these observations for the dark-to-luminous mass ratio in elliptical galaxies, and their impact on our understanding of the scatter in the x-ray vs. optical luminosity relationship.

Program listing for Wednesday