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Science 27 April 1984:
Vol. 224. no. 4647, pp. 345 - 350
DOI: 10.1126/science.224.4647.345
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Articles

Interstellar Matter and Chemical Evolution

M. Peimbert 1, A. Serrano 1, and S. Torres-Peimbert 1

1 Astronomers at Instituto de Astronomía, Universidad Nacional Autónoma de México, México 04510 D.F., México.

The determination of chemical abundances of the interstellar medium is related to three different areas of astronomy: pregalactic conditions, stellar evolution, and chemical evolution of galaxies. The observed abundances permit the testing of theories associated with these areas. Knowledge of the abundances of helium, carbon, nitrogen, and neon relative to the abundance of hydrogen in the interstellar medium puts limits on current models of cosmology, stellar evolution, and galactic evolution.


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