The Spectrum of Planetary Nebula NGC 6884

Details The Spectrum of Planetary Nebula NGC 6884 The Spectrum of Planetary Nebula NGC 6884

Feb 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997apjs..108..503h&link_type=abstract

Astrophysical Journal Supplement v.108, p.503

Astronomy and Astrophysics

Astronomy

15

Infrared: Ism: Lines And Bands, Ism: Abundances, Ism: Individual Ngc Number: Ngc 6888, Ultraviolet: Ism

Scientific paper

The bright, compact, moderately high-excitation planetary nebula, NGC 6884 (Perek-Kohoutek 82 +07 deg1) has a rich spectrum promising good diagnostics and offering a good target for the Hamilton Echelle Spectrograph at Lick Observatory. We combine International Ultraviolet Explorer (IUE), near-UV, visual, and IR data to obtain N(ion)/N(H+) for more than 30 species from H to [Fe VI]. These diagnostics suggest a rather large density range and an electron temperature near 10,000 K. The relative structural simplicity of this planetary nebula makes it worthwhile to attempt a plausible photoionization model and deduce atomic abundances, T*, and other properties implied for the central star. It is believed substantially improved chemical compositions are found.

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