TY - JOUR
T1 - Three-dimensional modelling of proton ingestion episodes in low-mass stars
AU - Heap, Stuart A.
AU - Stancliffe, Richard J.
AU - Lattanzio, John C.
AU - Dearborn, David S.P.
PY - 2012
Y1 - 2012
N2 - We have modelled a dual shell flash (DSF) in a low-metallicity 1.5M ȯ AGB star using the 3-dimensional hydrodynamic program "Djehuty", observing how the evolution of these events compares to 1-dimensional models, which are hypothesised to be inaccurate due to the simplifications in the treatment of convective processes. In particular, the stability of the separated convective structure following hydrogen ingestion is investigated. In both models constructed, the split convective zone structure was found to be unstable, with the velocities within the inner convective zone increasing until material breaks through the gap and recombines the two regions into a large single convective region.
AB - We have modelled a dual shell flash (DSF) in a low-metallicity 1.5M ȯ AGB star using the 3-dimensional hydrodynamic program "Djehuty", observing how the evolution of these events compares to 1-dimensional models, which are hypothesised to be inaccurate due to the simplifications in the treatment of convective processes. In particular, the stability of the separated convective structure following hydrogen ingestion is investigated. In both models constructed, the split convective zone structure was found to be unstable, with the velocities within the inner convective zone increasing until material breaks through the gap and recombines the two regions into a large single convective region.
UR - http://www.scopus.com/inward/record.url?scp=84887495194&partnerID=8YFLogxK
M3 - Conference article
AN - SCOPUS:84887495194
SN - 1824-8039
JO - Proceedings of Science
JF - Proceedings of Science
T2 - 12th International Symposium on Nuclei in the Cosmos, NIC 2012
Y2 - 5 August 2012 through 12 August 2012
ER -