Astrophysics (Index)About


(stellar convection bringing up fused material)

The term dredge-up, in stellar evolution, refers to the movement of fused material in/near the stellar core to the outer portion or surface of the star through convection. This can occur during some phases of stellar evolution, phases that are also sometimes referred to as dredge-ups. The dredged-up material and the reduction of displaced material can show in the spectrum of the star, along. The term is used for stars more massive than red dwarves that enter the red-giant branch (RGB). Dredge-ups occur in three types:

(stars,event type,stellar evolution)
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technetium star