Dust and gas - Overview

Schweizer, F. 1987. in de Zeeuw 1987, p. 109.

Progress made in the study of dust and gas in elliptical galaxies over the last 50 years is reviewed. The detection and measurement of dust, cool gas, warm gas, hot gas, and chemical abundances in ellipticals are discussed. The spatial distribution of the dust and gas and the gas kinematics and dynamics are addressed. The status of knowledge concerning the sources and sinks of gas and the net balance of gas and concerning the main heating and cooling mechanisms in elliptical galaxies is considered.