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PB 6 AND ITS CENTRAL STAR

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© 1991. The Astronomical Society of the Pacific. All rights reserved. Printed in U.S.A.
, , Citation James B. Kaler et al 1991 PASP 103 67 DOI 10.1086/132796

1538-3873/103/659/67

ABSTRACT

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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10.1086/132796