The IUE Absorption Spectrum of the Nucleus of NGC 246: Mostly C IV and O VI
Abstract
We present a list of more than 140 absorption features and their equivalent widths for the central star of the planetary nebula NGC 246 as observed in the wavelength range lambda-1169-lambda 2000. High signal-to-noise ratios are achieved by coadding nine high-dispersion SWP spectra, representing a total of nearly 22 hrs observing time. The IUE spectrum is dominated by strong absorption lines, or blends, of O VI and C IV. Other ions include N V, O V, Si IV, Fe VI, Fe VII, and Ne VII, plus interstellar absorption lines. The only feature to display a P Cygni profile is the C IV resonance doublet from which a terminal wind velocity of 4120 +- 200 km s^-1 is derived. (SECTION: Stars)
- Publication:
-
Publications of the Astronomical Society of the Pacific
- Pub Date:
- June 1995
- DOI:
- 10.1086/133588
- Bibcode:
- 1995PASP..107..531F
- Keywords:
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- PLANETARY NEBULAE: INDIVIDUAL: NGC 246;
- ISM: KINEMATICS AND DYNAMICS;
- ISM: ABUNDANCES