Supplementary figures and database for the SIMPLE Python code: Ni nucleosynthesis results

This repository is supplement to Pignatari et al., 2026 titled Stellar Interpretation of Meteoritic Data and PLotting for Everyone (SIMPLE): Isotope Mixing Lines for Six Sets of Core-collapse Supernova Models DOI. These files contains the supplementary figures for the previously linked paper describing the development of the SIMPLE (Stellar Interpretation of Meteoritic Data and Plotting for Everyone) Python code and the associated Ni results obtained using this tool.In addition, the repository includes: The Jupyter notebook simple_paper_2026_figures.ipynb, which is required to reproduce the plots presented in the paper; The notebook generate_hdf5_for_paper.ipynb, which generates the database of relevant isotopes; The resulting database file SIMPLE_Ni_db.hdf5, produced using the above notebook. This file can be used directly as input for simple_paper_2026_figures.ipynb. The models incorporated in the database are drawn from the following stellar evolution sets, for initial masses of 15, 20, and 25 solar masses: Ra02 - Rauscher et al. 2002 Pi16 - Pignatari et al. 2016 Si18 - Sieverdin et al. 2018 LC18 - Limongi & Chieffi 2018 Ri18 - Ritter et al. 2018 La22 - Lawson et al. 2022 The names of the figures in the .zip file follow the structure below: Figures showing element frequencies are named with "structure" at the beginning, figures showing slopes are named with "slope" and figures summarizing slopes by zone are named with "zoneslopes". In the first two cases, the file names follow the following logic: _ _ . The results specifically obtained for Ni are indicated by _Ni-decayed, which also means that we took into account the relevant radioactive isotopes during the creation of the figures and the publication of our results, the decay of which contributes to the final elemental abundances of stable Ni isotopes. The figures summarizing the slopes contain all models with a given initial solar mass, therefore only the initial solar mass is indicated in the file names. Note that this repository is dedicated to our paper titled Stellar Interpretation of Meteoritic Data and PLotting for Everyone (SIMPLE): Isotope Mixing Lines for Six Sets of Core-Collapse Supernova Models. The figures were obtained using the version 0.4.3 of the SIMPLE code.The selected figures shown in the paper corresponds to these plots: Figure 1: a: structure_Ra02_20-Ni-decayed.png b: structure_Pi16_20-Ni-decayed.png c: structure_Ri18_20-Ni-decayed.png d: structure_LC18_20-Ni-decayed.png e: structure_Si18_20-Ni-decayed.png f: structure_La22_20-Ni-decayed.png Figure 2: a: slope_Ra02_20-Ni-decayed.png b: slope_Pi16_20-Ni-decayed.png c: slope_Ri18_20-Ni-decayed.png d: slope_LC18_20-Ni-decayed.png e: slope_Si18_20-Ni-decayed.png f: slope_La22_20-Ni-decayed.png Figure 3: structure_Ri18_20-Ni60.png Figure 4: zoneslopes_20msun.png Citation and Use This database aggregates CCSN model outputs from multiple published studies for use with the SIMPLE framework. It serves as a curated access point and is not intended to replace the primary literature associated with the individual models. If data derived from one or more of these models are used in publications or scientific analyses, the original reference paper(s) corresponding to the relevant models must be cited, alongside this Zenodo record and the accompanying publication describing the SIMPLE framework and this database. Specific enquiries regarding the models, including their properties, underlying assumptions, applicability for data mining, or comparisons with observational data outside their application with SIMPLE, should be directed to the corresponding author(s) listed in the respective reference papers.