The CNO nucleosynthesis triad in planetary nebulae

Details The CNO nucleosynthesis triad in planetary nebulae The CNO nucleosynthesis triad in planetary nebulae

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991pasp..103..857d&link_type=abstract

(Rice University and University of Texas, Texas-Mexico Conference on Astrophysics: Plasmas in Astrophysics, 3rd, Rice University

Astronomy and Astrophysics

Astrophysics

5

Abundance, Carbon, Nitrogen, Nuclear Fusion, Oxygen, Planetary Nebulae, Iue, Line Spectra, Milky Way Galaxy, Ultraviolet Spectra

Scientific paper

The variations of CNO abundances in planetary nebulae showing significant nucleosynthesis effects are studied. The group of PN include 17 Galactic Type I, 4 halo, 6 SMC, and 6 LMC objects for which accurate C and N abunances were determined based on ultraviolet lines observed with the IUE satellite, coupled with extensive ground-based spectrophotometry for detailed diagnostics of physical conditions. Correlations between C, N, O, and He are studied using a variety of diagrams. The results suggest that C + N is approximately constant in the PN, and this is independent of the initial composition of the progenitors.

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