The evolutionary sequence of planetary nebulae

Details The evolutionary sequence of planetary nebulae The evolutionary sequence of planetary nebulae

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...357..140d&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 357, July 1, 1990, p. 140-148.

Astronomy and Astrophysics

Astrophysics

73

Asymptotic Giant Branch Stars, Magellanic Clouds, Planetary Nebulae, Stellar Evolution, Stellar Winds, H Beta Line, Hertzsprung-Russell Diagram, Ionized Gases, Radiation Pressure

Scientific paper

A first-order solution to the problem of nebular evolution is presented and used to construct photoionization models with the correct ionized gas geometry with respect to the central star. The models are used to investigate the evolution of the central star in terms of a 'transformed' H-R diagram in which H-beta luminosity replaces stellar luminosity and the nebular excitation class takes the place of stellar effective temperature. It is shown that the optically thick PN in the Magellanic Clouds behave as ram-pressure confined H II regions trapped between the shocked remnants of AGB wind and the high-velocity stellar wind of the PN nuclei.

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