PB 6 and its central star

Details PB 6 and its central star PB 6 and its central star

Jan 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991pasp..103...67k&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 103, Jan. 1991, p. 67-78.

Astronomy and Astrophysics

Astronomy

24

O Stars, Planetary Nebulae, Stellar Composition, Ultraviolet Astronomy, Emission Spectra, Iue, Spectral Line Width, Stellar Luminosity, Stellar Spectra

Scientific paper

It is found that the hot nucleus of the Type I southern planetary nebula PB 6 is a member of the rare class of O VI stars. The blended O VI 3811 + 3834 emission doublet is one of the strongest seen, with an equivalent width (relative to the stellar continuum) of about 400 A. The helium, nitrogen, and carbon abundances are all very high for the core mass and the relations found by Kaler and Jacoby (1990). The Ne/O ratio, at 0.17, is close to the norm found for planetaries, which supports the high O/H, while the S/O is roughly solar.

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