S-process nucleosynthesis in AGB stars with the full spectrum of turbulence (FST) scheme for convection

Andres Yague, D. A. Garcia-Hernandez, P. Ventura & M. Lugaro

IAC, Spain

The chemical evolution of asymptotic giant branch (AGB) stars depends greatly on the input physics (e.g., mass loss recipe, convective model). Variations of hot bottom burning (HBB) strength, third dredge-up (TDU) efficiency, or AGB evolutionary timescale are among the main consequences of adopting different input physics in the AGB models. The ATON evolutionary code stands apart from others in that it uses the Bloecker mass loss prescription and the Full Spectrum of Turbulence (FST) convective model. We have developed an s-process module for ATON (by extending the element network from 30 to 320 elements), which is then merged with ATON in a self consistent way. Here we present the first results of s-process nucleosynthesis for ATON AGB models with different progenitor masses and metallicities. Our results are compared also with the theoretical predictions of present AGB nucleosynthesis models using different input physics.

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