Evolution of 1.2 solar mass star and the formation of planetary nebulae

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Planetary Nebulae, Stellar Envelopes, Stellar Evolution, Stellar Mass Ejection, Red Giant Stars, Stellar Luminosity, Stellar Models, Stellar Winds

Scientific paper

The evolutionary calculations of a 1.2 solar mass star along the asymptotic branch with a continuous mass loss using Reimer's empirical formula show the final stage loss rate to be 2.7 x 10 to the -6th solar mass/yr. The final mass is 0.6 solar mass. Analysis of other mechanisms for the creation of planetary nebulae (P.N.) along the evolutionary path indicates that the creation of P.N. by sudden mass ejection or by a series of short bursts is not likely.

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