Fifty years of nebular chemical compositions

Details Fifty years of nebular chemical compositions Fifty years of nebular chemical compositions

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986pasp...98..957a&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 98, Oct. 1986, p. 957-964.

Astronomy and Astrophysics

Astronomy

3

Chemical Composition, Interstellar Matter, Nebulae, H Ii Regions, Interstellar Gas, Ion Density (Concentration), Planetary Nebulae

Scientific paper

Developments in observation and theory relevant to determination of nebular compositions are reviewed. Theoretical advances in the areas of nebular diagnostics and ionic concentrations, H II regions and the interstellar medium, and the energy balance in a gaseous nebula are recapitulated. Efforts to determine the reality of abundance differences between nebulae are briefly retold. Finally, the discoveries made possible by the development of photoelectric photometry and the observations made with the IUE are discussed.

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