NE V in planetary nebulae

Details NE V in planetary nebulae NE V in planetary nebulae

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...371..636k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 371, April 20, 1991, p. 636-638. SERC-supported research.

Astronomy and Astrophysics

Astrophysics

6

Abundance, Atomic Excitations, Electron Transitions, Neon, Planetary Nebulae, Electron Energy, Electron States, Plasma Diagnostics

Scientific paper

The improved atomic data of Lennon and Burke (1991) are used there to rederive Ne V diagnostic line ratios applicable to PNe for a range of electron temperatures and densities. These results are found to be somewhat different from those determined when the earlier R-matrix atomic data of Baluja et al. (1980) and Aggarwal (1983) are used in the line ratio calculations. It is shown that it is unwise to use R1 or R3 alone as a temperature or density diagnostic, unless the density or temperature of the Ne V emitting region of the plasma has been independently determined. However, reliable estimates of both Ne and Te may be found when R1 and R3 are used together, while R2 may be used by itself as an accurate Ne diagnostic.

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