List of provided resources
- Solid Targets for Astrophysics Research – STAR
- Development of a jet-gas target system
- Barium Star Repository
- Reaction Network Generator – NetGen
- Stellar Interpretation for Meteoritic data and PLotting – SIMPLE
- Nuclear Reaction Rates – ChANUREPS
- Stellar Trajectories – ORChESTRA
- s-process Library – ASTRAL
- Course on Galactical Chemical Evolution Modelling
- Course on Stellar Nucleosynthesis Tools for HPC Clusters
- Multidisciplinary Guide to Astronuclear Science Cases
- Translation of Stellar Yield Predictions for Comparison with the Laboratory Analysis of Meteorites
- Scientific Publications
Introduction
A variety of joint research activities (JRAs) in ChETEC-INFRA will compile information and data for researchers in their respective fields.
This includes databases of:
- surface abundance corrections for effects of stellar evolution (WP5)
- 3D NLTE abundance corrections for a number of key s-process chemical elements (WP5)
- AGB/binary stars (WP6)
- stable isotope anomalies in bulk meteoritic materials (WP9)
Other goals in ChETEC-INFRA revolve around software tools for nuclear astrophysics calculations, and how to make these tools more easily accessible to the community.
The projects pursued so far are listed below:
Reports
Solid Targets for Astrophysics Research – STAR
STAR, as part of ChETEC-INFRA’s WP3/JRA1, is focused on solid targets to be used in experiments for nuclear astrophysics.
The report summarizes experience, capabilities and facilities at different partner institutions, available to the nuclear astrophysics community.
Development of a Jet-Gas Target
The development and construction of a jet-gas target for nuclear astrophysics experiments is part of ChETEC-INFRA’s WP3/JRA1. A progress report on this work has been presented in October 2022.
A copy of the report is available on arXiv, and has been submitted for publication as part of the conference proceedings for the NPA-X conference.
Databases
Barium Star Repository
A database of Barium stars has been created and filled with first data. The data collection is openly available as a GitHub repository and will be reviewed / expanded on a regular basis.
Reaction Network Generator – NetGen
NetGen is a tool for astrophysicists to build up nuclear reaction networks for a given set of reactions, generate tables of nuclear reaction rates on a temperature grid, and to plot the individual reaction rates against temperature.
Stellar Interpretation for Meteoritic data and PLotting – SIMPLE
SIMPLE is an open-source algorithm to translate predictions from sets of core-collapse nucleosynthesis models into quantities which allow for a comparison with meteoritic anomalies.
The code is available on the NuGrid GitHub repository (www.nugridstars.org), and can also be used online as a Jupyter notebook at https://astrohub.uvic.ca/chetec/.
Nuclear Reaction Rates – ChANUREPS
ChANUREPS is a platform where the nuclear-astrophysics community is providing new nuclear reaction rates, and other users can find them easily open source with a simple format. These rates could be used for many research tasks, such as nucleosynthesis calculations, comparison when new rates are becoming available and much more.
Maxwellian-Averaged Cross Sections for the s-Process – ASTRAL
ASTRAL, the ASTrophysical Rate and rAw data Library, collects recommended neutron capture cross sections required for s-process nucleosynthesis calculations. As measured data are typically cross section ratios between the isotope under investigation and a reference cross section, ASTRAL does not only store the cross section but also the raw value, allowing to accommodate updates of the reference cross sections.
Stellar Trajectories – ORChESTRA
ORChESTRA (Online Repository of ChETEC Stellar TRAjectories) is developed and maintained as a free open-source platform under ChETEC-INFRA. The aim of ORChESTRA is to publish regularly a fully documented library of certified trajectories, covering a wide range of stellar conditions for nuclear astrophysics simulations. Trajectories with initial conditions, origin and relevant information will be fully available.
Trajectory data in ORChESTRA is available on Zenodo.
Courses and Tutorials
Galactic Chemical Evolution Modelling
A video course on GCE Modelling with NuPyCEE and JINAPyCEE that guides through the initial setup, and their application in two lab projects.
The course can be found on this page.
Stellar Nucleosynthesis Tools for HPC Clusters
Series of video tutorials providing online training courses for stellar evolution and nucleosynthesis tools on the ChETEC-INFRA Viper HPC facility (tutorials also useful for other HPC systems and servers/desktops/laptops).
The first video of the series is available on the ChETEC-INFRA YouTube Channel.
Multidisciplinary Guide to Astronuclear Science Cases
This deliverable to WP6 will build on the work of JRA1, JRA2 and JRA3 to provide the ChETEC-INFRA community with textbook examples of cross-collaboration between astronomers, astrophysicists, nuclear physicists and cosmochemists. A first version of this guide is available here, and will be expanded in the future.
Tools
Translation of Stellar Yield Predictions for Comparison with the Laboratory Analysis of Meteorites
A git repository with a Jupyter notebook providing the tools to translate predictions from stellar yield calculations into the units and representation obtained from laboratory analysis of meteorites.
The repository is available on GitHub.
Scientific Publications
Publications that acknowledge ChETEC-INFRA can be found on the SAO/NASA Astrophysics Data System (ADS).