Model
Digital Document
Publisher
Florida Atlantic University
Description
The evolution of the carbon-oxygen cores of intermediate mass stars
immediately prior to and following carbon ignition is described. The
thermal consequences of the convectively driven URCA process are considered
in detail and applied to these cores following carbon ignition
to determine their thermal. We found, as did Paczynski and Ergma, and
Couch and Arnett, that a global thermal balance and stability is possible for some models. Unlike the previous investigators, however, we found that some models were possibly unstable due to local heating at
the edge of the convective region. The implications for intermediate mass stars burning carbon are potentially serious, as these stars naturally evolve into the region occupied by these unstable models.
immediately prior to and following carbon ignition is described. The
thermal consequences of the convectively driven URCA process are considered
in detail and applied to these cores following carbon ignition
to determine their thermal. We found, as did Paczynski and Ergma, and
Couch and Arnett, that a global thermal balance and stability is possible for some models. Unlike the previous investigators, however, we found that some models were possibly unstable due to local heating at
the edge of the convective region. The implications for intermediate mass stars burning carbon are potentially serious, as these stars naturally evolve into the region occupied by these unstable models.
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