The forbidden O III lines as a quantitative indicator of nebular central-star temperature

Details The forbidden O III lines as a quantitative indicator of nebular central-star temperature The forbidden O III lines as a quantitative indicator of nebular central-star temperature

Mar 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...220..887k&link_type=abstract

Astrophysical Journal, Part 1, vol. 220, Mar. 15, 1978, p. 887-889.

Astronomy and Astrophysics

Astrophysics

58

Forbidden Bands, Line Spectra, Oxygen Spectra, Planetary Nebulae, Stellar Temperature, Astronomical Spectroscopy, Black Body Radiation, Neon, Nitrogen, Optical Thickness

Scientific paper

New and revised blackbody temperatures (Ts) for exciting stars of nebulae are calculated by Stoy's (1933) method. In low-excitation optically thick nebulae the 5007-A forbidden O III/H-beta intensity ratio correlates well enough with Ts to be used alone as an accurate indicator of the calculated blackbody temperature. For nebulae for which 4686-A He II is weak or absent, for which Ts is no more than about 68,000 K, it is found that log Ts can be correlated with 5007-A forbidden O III intensity. A similar correlation exists for 3868-A forbidden Ne III intensity.

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