preplanetary nebula

preplanetary nebula
A stage in stellar evolution when a star starts to shed its outer layers before coming a true planetary nebula.

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  • Asymptotic giant branch — The asymptotic giant branch is the region of the Hertzsprung Russell diagram populated by evolving low to medium mass stars. This is a period of stellar evolution undertaken by all low to intermediate mass stars (0.6 10 solar masses) late in… …   Wikipedia

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