Physics
Scientific paper
Jul 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984esasp.218..175p&link_type=abstract
In ESA Fourth European IUE Conf. p 175-178 (SEE N84-35135 24-88)
Physics
Absorption Spectra, Interstellar Space, Planetary Nebulae, Ultraviolet Spectra, Electron Density Profiles, Interstellar Chemistry, Interstellar Matter, Iue, Lyman Alpha Radiation
Scientific paper
High resolution IUE spectra were used to separate the narrow absorption lines due to the interstellar material and the nebular matter in NGC 6543. Column densities of ions in both regions were determined and the ionic and elemental abundances were derived. Lines from the fine structure levels yield the electron density in the nebula: log n = 3, consistent with the current value found for eNGC 6543. Using Lyman alpha absorption and interstellar absorption lines of S and Zn the foreground extinction was estimated: E(B-V) = 0.04. The hydrogen column density towards NGC 6543 is found to have log NH = 20.35.
Mo Jing-Er
Pottasch Stuart R.
Pwa T. H.
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