Abundances in the Planetary Nebula IC 5217

Details Abundances in the Planetary Nebula IC 5217 Abundances in the Planetary Nebula IC 5217

Aug 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aj....122..954h&link_type=abstract

The Astronomical Journal, Volume 122, Issue 2, pp. 954-965.

Astronomy and Astrophysics

Astronomy

9

Ism: Planetary Nebulae: General, Planetary Nebulae: Individual (Ic 5217)

Scientific paper

High-resolution optical wavelength spectroscopic data were secured in the optical wavelengths, 3700-10050 Å, for the planetary nebula IC 5217 with the Hamilton Echelle Spectrograph at Lick Observatory. These optical spectra have been analyzed along with the near-UV and UV archive data. Diagnostic analyses indicate a nebular physical condition with electron temperature of about 10,700 K (from the [O III] lines) and the density of Nɛ=5000 cm-1. Ionic concentrations have been derived with the representative diagnostics, and with the aid of a photoionization model construction, we derived the elemental abundances. Contrary to the previous studies found in the literature, He and C appear to be depleted compared to the average planetary nebula and to the Sun (and S marginally so), while the remaining elements appear to be close to the average value. IC 5217 may have evolved from an O-rich progenitor, and the central star temperature of IC 5217 is likely to be 92,000 K.

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