IRC +10216: a peanut nebula!
Abstract
Carbon stars with low effective temperature (2,000-3,000 K) are thought to be long-period variables evolving on the Asymptotic Giant Branch (AGB). These objects are burning alternately hydrogen and helium in different shells around a degenerate core of carbon and oxygen [1]. Material processed during the helium burning phase is dredged-up by convection to the surface and enriches it in carbon relative to oxygen.
- Publication:
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The Messenger
- Pub Date:
- March 1989
- Bibcode:
- 1989Msngr..55...25L
- Keywords:
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- Carbon Stars: Circumstellar Shells