A "carbon star" has more carbon on its surface than does the Sun. This is the result of:

Question

Quizplus · Accepted Answer

The process of dredge-up occurs later in a star's life, when it has exhausted its hydrogen fuel in the core and starts to burn helium. In this phase, the outer convective envelope reaches down into the carbon-rich core, dredging up more carbon to the surface. This is why carbon stars have an abundance of carbon on their surface compared to stars like the Sun.

A "Carbon Star" Has More Carbon on Its Surface Than