On the nitrogen and oxygen abundances in nebulae

Details On the nitrogen and oxygen abundances in nebulae On the nitrogen and oxygen abundances in nebulae

Oct 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977a%26a....61..247p&link_type=abstract

Astronomy and Astrophysics, vol. 61, no. 2, Oct. 1977, p. 247-249.

Astronomy and Astrophysics

Astrophysics

3

Abundance, Charge Transfer, Gas Ionization, Nebulae, Nitrogen Ions, Oxygen Ions, Astronomical Models, Interstellar Gas, Planetary Nebulae

Scientific paper

The effect of charge transfer reactions between single and double ionized oxygen and nitrogen with hydrogen is shown to modify strongly the ionization structure of these elements in models of gaseous nebulae. The computed fractional abundances of O(+) and N(+) result quite larger than in models which do not consider these reactions. That brings to a better agreement between theory and observations in the line intensities emitted from low ionization potential ions in planetary nebulae.

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