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- W2014371800 abstract "The central star of the planetary nebula VV 47 (164 +31deg1, occasionally known as NGC 2474-5) exhibits an optical spectrum similar to those of the pulsating PG1159-035 stars with somewhat broader absorption lines than those of the pulsating nucleus of the planetary nebula K1-16. Broad absorption features of He II, C IV, and O VI are observed, with narrow emission reversals in some cases. UBV photometry confirms that this is a very hot star, with little reddening. Several long runs of time-series photometry appear to show irregular variations, but we cannot present a conclusive case that this relatively faint object is a pulsating variable. The similarity to the PG1159-035 variables suggests a distance of 1060 (+1000,-600) pc. Our results are consistent with the distance, Zanstra temperature, and luminosity estimates derived by Kaler." @default.
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- W2014371800 date "1988-02-01" @default.
- W2014371800 modified "2023-09-23" @default.
- W2014371800 title "The nucleus of the planetary nebula VV 47 - Similarities with the pulsating PG1159-035/K1-16 variables" @default.
- W2014371800 doi "https://doi.org/10.1086/132154" @default.
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