Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988pasp..100..187l&link_type=abstract
Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 100, Feb. 1988, p. 187-191.
Astronomy and Astrophysics
Astronomy
16
Astronomical Spectroscopy, Planetary Nebulae, Variable Stars, White Dwarf Stars, Absorption Spectra, Emission Spectra, Light Curve, Stellar Mass Ejection, Ubv Spectra
Scientific paper
The central star of the planetary nebula VV 47 (164 + 31 deg 1, 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. The similarity to the PG1159-035 variables suggests a distance of 1060 (+1000,-600)pc. The present results are consistent with the distance, Zanstra temperature, and luminosity estimates derived by Kaler (1978).
Fleming Thomas Anthony
Grauer Albert D.
Green Richard F.
Liebert James
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