The chemical compositions of gaseous nebulae

Details The chemical compositions of gaseous nebulae The chemical compositions of gaseous nebulae

Oct 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990pasp..102.1097a&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 102, Oct. 1990, p. 1097-1112.

Astronomy and Astrophysics

Astronomy

25

Chemical Composition, Interstellar Gas, Nebulae, Stellar Evolution, Astronomical Models, H Ii Regions, Stellar Systems

Scientific paper

The paper examines methods of plasma diagnostics for gaseous nebulae, evaluates the role of theoretical nebular models, and assesses the sources of error resulting from fluctuations in the electron density and temperature throughout the emitting volume. The importance of extending the observed spectral range using IR and UV measurements is noted. Particular emphasis is placed on He because of its importance to cosmology. Finally, the relationship of gaseous nebular composition studies to stellar evolution problems is examined.

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