The correlations between planetary nebula morphology and central star evolution

Details The correlations between planetary nebula morphology and central star evolution The correlations between planetary nebula morphology and central star evolution

Nov 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...279..521s&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 279, no. 2, p. 521-528

Astronomy and Astrophysics

Astrophysics

89

Mass Distribution, Planetary Nebulae, Statistical Correlation, Stellar Evolution, Stellar Magnitude, Stellar Mass, Stellar Temperature, Asymptotic Giant Branch Stars, Dimensional Measurement, Distance, Milky Way Galaxy, Morphology, Optical Thickness, Stellar Luminosity

Scientific paper

The morphology of 111 Galactic planetary nebulae has been studied in relation to the evolutionary stage of their central stars. In order to locate these stars on the log Teff - Log L/solar luminosity plane, we have calculated the Zanstra temperatures with the most up to date fluxes and magnitudes available in the literature. Distances to the nebulae were estimated with statistical methods. The different nature and evolutionary stages of central stars have been related to the morphologies of the surrounding nebulae in a statistical sense. We found that multiple shell nebulae contain stars that are at a different evolutionary stage than those of single shell nebulae; we also found that bipolar and elliptical planetary nebulae very likely contain central stars with a different mass distribution; furthermore, we build an optical thickness sequence of morphological types.

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