The O III 52 micron/88 micron emission-line ratio in planetary nebulae

Details The O III 52 micron/88 micron emission-line ratio in planetary nebulae The O III 52 micron/88 micron emission-line ratio in planetary nebulae

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988japa....9..237k&link_type=abstract

Journal of Astrophysics and Astronomy (ISSN 0250-6335), vol. 9, Dec. 1988, p. 237-241. Research supported by SERC.

Astronomy and Astrophysics

Astrophysics

2

Abundance, Emission Spectra, Oxygen Spectra, Planetary Nebulae, Electron Density (Concentration), Electron Energy, Electron Impact, Far Infrared Radiation

Scientific paper

R-matrix calculations of electron impact excitation rates in O III are used to derive the electron-density-sensitive emission-line ratio R for a range of electron temperatures (Te = 5000 - 20,000K) and densities (Ne = 10 - 105cm-3) applicable to planetary nebulae. Electron densities deduced from the observed values of R in several planetary nebulae are in excellent agreement with those deduced from Cl III and Ar IV, which provides support for the accuracy of the atomic data adopted in the calculations.

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