Forbidden O III electron temperature in planetary nebulae

Details Forbidden O III electron temperature in planetary nebulae Forbidden O III electron temperature in planetary nebulae

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989japa...10..147k&link_type=abstract

Journal of Astrophysics and Astronomy (ISSN 0250-6335), vol. 10, June 1989, p. 147-150. Research supported by SERC.

Astronomy and Astrophysics

Astrophysics

5

Electron Energy, Emission Spectra, Line Spectra, Planetary Nebulae, Electron Transitions, Oxygen Spectra

Scientific paper

The electron-temperature-sensitive emission-line ratio I(2s2 2p2 1D - 2s2 2p2 1S)/I(2s2 2p2 3P1,2 - 2s2 2p2 1D) = I(4363 A)/I(4959 + 5007 A) has been determined based upon relative level populations for O III obtained using impact excitation rates calculated with the R-matrix code. Results are presented for a temperature range which is applicable to planetary nebulae. Electron temperatures derived from the observed R values of several planetary nebulae agree well with those determined from electron-temperature-sensitive line ratios is such other species as (semiforbidden C III)/C II, forbidden N II, and forbidden Ar II.

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