Physics
Scientific paper
Feb 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992azh....69...38s&link_type=abstract
Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 69, no. 1, Jan.-Feb. 1992, p. 38-51. In Russian.
Physics
3
Cosmic Dust, Planetary Nebulae, Radiant Flux Density, Stellar Physics, Helium Hydrogen Atmospheres, Stellar Magnitude, Stellar Mass, Stellar Temperature
Scientific paper
The effect of dust in a planetary nebula is taken into account in estimating the parameters of the central star from the radio flux of the nebula and the stellar magnitude of the nucleus. The temperatures, radii, and luminosities of 71 central stars are calculated. The estimate of the temperature of the exciting star in Pk 64 + 05 deg 1, where the optical depth of the dust is the greatest, is twice that obtained with the hydrogen-helium model of the nebula. The number densities of the hydrogen atoms and the ionized masses of planetary nebulae are obtained. The range of ionized nebular masses exceeds two orders of magnitude. The lower estimates of stellar masses of planetary nebula progenitors are in the range 0.528-2.324 solar masses.
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