C(+2) electron temperatures in planetary nebulae

Details C(+2) electron temperatures in planetary nebulae C(+2) electron temperatures in planetary nebulae

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...308..337k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 308, Sept. 1, 1986, p. 337-346.

Astronomy and Astrophysics

Astrophysics

39

Abundance, Carbon, Electron Energy, Planetary Nebulae, Forbidden Transitions, Nitrogen, Oxygen, Ultraviolet Spectra

Scientific paper

Electron temperatures are calculated for 30 planetary nebulae from the flux ratios of the C III] λ1909 and C II λ4267 lines, both of which are produced in the C+2 zone of the nebula. These temperatures correlate much better with optical [O III] temperatures than they do with those derived from [N II], except for low central star temperatures. However, as calculated from currently available atomic parameters, the Te(C+2) average is ≡2000K lower than Te[O III]. Possible solutions for this discrepancy are discussed.

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