The evolution of planetary nebulae nuclei - Models against observations

Details The evolution of planetary nebulae nuclei - Models against observations The evolution of planetary nebulae nuclei - Models against observations

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...217..209t&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 217, no. 1-2, June 1989, p. 209-216.

Astronomy and Astrophysics

Astrophysics

20

Astronomical Models, Planetary Nebulae, Stellar Evolution, Distance, Hertzsprung-Russell Diagram, Stellar Luminosity, Stellar Mass

Scientific paper

Several diagrams are constructed where theoretical evolutionary tracks for planetary nebula nuclei are confronted with the distributions of observational points from a sample of about 200 planetary nebulae. A careful analysis of these diagrams lead to the conclusion that hydrogen burning models for the planetary nebula nuclei reproduce better the observations than models which burn initially helium. This implies that the formation of planetary nebulae is not favored by a helium shell flash. As for the masses of the planetry nebula nuclei, the bulk is found to lie between 0.55 and 0.65 solar mass.

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