Complete nucleosynthesis calculations for low-mass stars from NuGrid

M. Pignatari, F. Herwig, M. E. Bennett, S. Diehl, C. L. Fryer, R. Hirschi, A. Hungerford, G. Magkotsios, G. Rockefeller, Francis Timmes, Patrick Young

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Many nucleosynthesis and mixing processes of low-mass stars as they evolve from the Main Sequence to the thermal-pulse Asymptotic Giant Branch phase (TP-AGB) are well understood (although of course important physics components, e.g. rotation, magnetic fields, gravity wave mixing, remain poorly known). Nevertheless, in the last years presolar grain measurements with high resolution have presented new puzzling problems and strong constraints on nucleosynthesis processes in stars. The goal of the NuGrid collaboration is to present uniform yields for a large range of masses and metallicities, including low-mass stars and massive stars and their explosions. Here we present the first calculations of stellar evolution and high-resolution, post-processing simulations of an AGB star with an initial mass of 2 M and solar-like metallicity (Z=0.01), based on the post-processing code PPN. In particular, we analyze the formation and evolution of the radiative 13C-pocket between the 17th TP and the 18th TP. The s-process nucleosynthesis profile of a sample of heavy isotopes is also discussed, before the next convective TP occurrence.

Original languageEnglish (US)
Title of host publicationProceedings of Science
StatePublished - 2008
Event10th Symposium on Nuclei in the Cosmos, NIC 2008 - Mackinac Island, MI, United States
Duration: Jul 27 2008Aug 1 2008

Other

Other10th Symposium on Nuclei in the Cosmos, NIC 2008
CountryUnited States
CityMackinac Island, MI
Period7/27/088/1/08

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ASJC Scopus subject areas

  • General

Cite this

Pignatari, M., Herwig, F., Bennett, M. E., Diehl, S., Fryer, C. L., Hirschi, R., Hungerford, A., Magkotsios, G., Rockefeller, G., Timmes, F., & Young, P. (2008). Complete nucleosynthesis calculations for low-mass stars from NuGrid. In Proceedings of Science