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Monash Astro Seminars
3pm, Tuesday 18 August 2009; Maths, Rm. 345
George Angelou
"Extra mixing and nucleosynthesis in stars"
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Everywhere we turn there seems to be evidence that extra mixing (i.e mixing outside convective regions) needs to be included in stellar models. The most obvious examples are $^{12}$C/$^{13}$C and $^{3}$He abundances during the first giant branch and the $^{13}$C pocket formation during the Asymptotic Giant Branch . Although it is simple enough to calculate the extent of extra mixing needed and to parameterise this, finding the actual physical mechanism is very challenging. Recently results from Djehuty, 3D hydro-dynamic stellar structure code has led us to ``delta-$\mu$ mixing". This is a form of thermohaline mixing and has been successful in resolving some of our abundance problems but not all. I will present the work I have been doing with MONTAGE (Monash Nucleosynthesis Code with s-process) and some of the problems I hope to investigate with this.(PhD first year review)
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Please email all enquiries to daniel.price@sci.monash.edu.au or rosemary.mardling@sci.monash.edu.au
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