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

11th Pacific Rim Conference on Stellar Astrophysics: Physics and Chemistry of the Late Stages of Stellar Evolution

物理学;天文学

Yagüe, A.^1,2,3 ; García-Hernández, D.A.^2,3 ; Ventura, P.^1 ; Lugaro, M.^4,5

Istituto Nazionale di Astrofisica - OAR, Monte Porzio Catone, Italy^1

Instituto de Astrofísica de Canarias, La Laguna, Tenerife, Spain^2

Departamento de Astrofísica, Universidad de la Laguna (ULL), La Laguna, Tenerife, Spain^3

Konkoly Observatory, Hungarian Academy of Sciences, Budapest, Hungary^4

Monash Centre for Astrophysics, Monash University, Australia^5

关键词: AGB stars;    Asymptotic giant branch stars;    Chemical evolution;    Full spectrum;    Mass loss;    S-process;    Turbulence scheme;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/728/7/072004/pdf
DOI  :  10.1088/1742-6596/728/7/072004

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

The chemical evolution of asymptotic giant branch (AGB) stars models depends greatly on the input physics (e.g. convective model, mass loss recipe). Variations of hot bottom burning (HBB) strength, or third dredge-up (TDU) efficiency 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 Full Spectrum of Turbulence convective model. Here we present the first results of a newly developed s-process nucleosynthesis module for ATON AGB models. Our results are compared also with observations and theoretical predictions of present AGB nucleosynthesis models using different input physics.