A spectroscopic study of moderately bright planetary nebulae

Details A spectroscopic study of moderately bright planetary nebulae A spectroscopic study of moderately bright planetary nebulae

May 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979ap%26ss..62..397a&link_type=abstract

Astrophysics and Space Science, vol. 62, no. 2, May 1979, p. 397-437.

Astronomy and Astrophysics

Astrophysics

171

Line Spectra, Planetary Nebulae, Ultraviolet Spectra, Abundance, Astronomical Catalogs, Astronomical Spectroscopy, Electron Density (Concentration), Electron Energy, Helium, Ionized Gases, Plasma Diagnostics

Scientific paper

Results are presented for spectroscopic observations of 36 moderately bright planetary nebulae over the nominal wavelength range from 3700 to 8700 A. The lines measured are listed, along with their identifications and intensities. The electron temperatures and densities implied by the observations are discussed, and concentrations of singly and doubly ionized helium are deduced from intensities of selected He I and He II lines. The plasma diagnostics used are described.

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