Spectrophotometry of the compact planetary nebulae NGC 6879 and NGC 6881

Details Spectrophotometry of the compact planetary nebulae NGC 6879 and NGC 6881 Spectrophotometry of the compact planetary nebulae NGC 6879 and NGC 6881

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pasp...99..952k&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 99, Sept. 1987, p. 952-956.

Statistics

Computation

8

Abundance, Electron Density (Concentration), H Alpha Line, H Gamma Line, Planetary Nebulae, Stellar Spectrophotometry, Computational Chemistry, Error Analysis

Scientific paper

The authors have observed the spectra of the two compact planetary nebulae NGC 6879 and NGC 6881 between λ3727 and λ6731 with both the IRS and the IIDS at Kitt Peak and calculate extinction constants, electron densities and temperatures, and a wide variety of ionic abundances. Both nebulae have high densities. NGC 6881, the more highly excited of the two, is significantly enriched in nitrogen and possibly exhibits some elevation in helium.

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