Cool dense gas in early-type galaxies

Details Cool dense gas in early-type galaxies Cool dense gas in early-type galaxies

Jan 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997ssrv...81....1h&link_type=abstract

Space Science Reviews, vol. 81, no, p. 1

Astronomy and Astrophysics

Astrophysics

26

Elliptical Galaxies, Neutral Gases, Gas Density, Cooling Flows (Astrophysics), Molecular Gases, Galactic Evolution, Massive Stars, Interstellar Gas, Lenticular Bodies, Cosmic Dust

Scientific paper

CO observations have shown that many lenticular and elliptical galaxies contain significant amounts of cool dense gas. This review summarizes the observational results related to the neutral gas phase and presents a systematic comparison with other interstellar and stellar data. The discovery of very dense molecular gas in the nuclear regions of early-type galaxies, the possible existence of a dust component neither seen optically nor in CO, internal inconsistencies of cooling flow scenarios, the origin of the cool gas, the presence of massive stars, aspects of galaxy evolution, and possibilities for future research are discussed in the light of the new data.

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