The spectrum of NGC 7027

Details The spectrum of NGC 7027 The spectrum of NGC 7027

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990pasp..102...59k&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 102, Jan. 1990, p. 59-76.

Astronomy and Astrophysics

Astronomy

81

Astronomical Spectroscopy, Planetary Nebulae, Abundance, Echelle Gratings, Interstellar Extinction, Iue, Radiation Distribution, Stellar Radiation

Scientific paper

IUE and echelle spectrograph observations of the planetary nebular NGC 7027 are analyzed to obtain nebular plasma diagnostics and chemical abundances. It is found that most of the nebular plasma has a density of about 60,000/cu cm and a temperature of about 14,000 K. The results suggest that the stellar radiation field is greatly enhanced shortward of 130 A because of a dense non-LTE wind. It is found that the chemical composition is that of a normal C-rich object, rather than that of a N-rich object.

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