Other
Scientific paper
Jun 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978rech....9..574g&link_type=abstract
La Recherche, vol. 9, June 1978, p. 574-576. In French.
Other
Elliptical Galaxies, Galactic Evolution, Hydrogen Clouds, Interstellar Gas, Hertzsprung-Russell Diagram, Interstellar Matter, Molecular Gases, Spiral Galaxies
Scientific paper
While most elliptical galaxies possess a very small amount of interstellar gas, large amounts of interstellar hydrogen have recently been discovered in association with five elliptical galaxies which do not seem to differ from the low-gas elliptical galaxies in any other way. Characteristics of the galaxy-gas positional relationship suggest that the gas clouds were not captured by the galaxies. Elliptical galaxies are thought to be older than spiral galaxies, and no theory of elliptical galaxies has accounted for the absence of gas expected to be shed by stars in an advanced stage of evolution. The implications of the discovery of interstellar-gas-rich elliptical galaxies for an understanding of elliptical galaxies are considered.
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