DOI: 10.24378/exe.1123
title: The statistical properties of stars and their dependence on metallicity (dataset)

description: This is the dataset that was used to produce the Bate (2019) article "The statistical properties of stars and their dependence on metallicity" published in Monthly Notices of the Royal Astronomical Society. It contains the output from each of the SPH simulations. It also includes some of the data produced during the analysis of the calculations, and images of the calculations that were used to make animations.
description: This repository contains the datasets from the original smoothed particle hydrodynamics (SPH) calculations for the associated paper (Bate 2019, DOI:10.1093/mnras/stz103), including all dump files. There are 4 SPH calculations discussed in the paper, each using 35 million SPH particles, but using different metallicities. The metallicities correspond to solar metallicity (METAL1), 3 times solar metallicity (METAL3), 1/10 solar metallicity (METAL01) and 1/100 solar metallicity (METAL001). The outputs from each calculation are found in the zip files that begin with BATE2019_METAL*. For example, BATE2019_METAL3.zip contains the input and output files from the calculation with 3 times solar metallicity, except for the dump files. The output files include ASCII files outputting global properties of the calculation at the times that dump files were written (beginning with the letters "clM"), Fortran binary files (beginning with the letter P) that give sink particle properties throughout the calculations, and Fortran binary files (beginning with the letter A) that contain entries for each particle accreted by a sink particle. The P-files can be read using the Fortran programme included in the repository: ptmass_simple_MPI_2.f . The dump files are contained in a series of zip files such as: BATE2019_METAL3_0280_0289.zip which contains 10 dump files, numbers 280 to 289. The dump files are included in groups to allow downloads in reasonably small (~50 GB) chunks, since the entire repository is ~22 TB. Calculation was started from a dump file called CIM0000. Later files are then are numbered sequentially. The times of each dump file are recorded in the ASCII output files beginning with “clM”. The times between dump files are uniform throughout most of the calculations, except for early in each calculation when dumps are made 8 times less frequently. The SPH dump files (and other Fortran binary files) were written in big endian format and generated by the sphNG code. They can be read, visualised, and manipulated using the free, publicly available SPLASH visualisation code (which reads sphNG dump files), written by Daniel Price, that can be downloaded from: http://users.monash.edu.au/~dprice/splash/ For each calculation there is an Analysis zip file (e.g. BATE2019_METAL01_Analysis.zip) which contains some analysis files that were used to write the paper. For each calculation there is an Movie zip file (e.g. BATE2019_METAL3_Movie.zip) that contain sequences of images of column density, temperatures, and chemical abundances that have been used to make animations of the calculations. For each calculation there is also a DiscsMovie zip file (e.g. BATE2019_METAL3_DiscsMovie.zip) that contain sequences of images of column density showing 400x400 AU patches around each sink particle (star) that was produced by the calculation so that the evolution of discs and multiple stellar systems can be followed. The animations associated of the calculations can be found at: http://www.astro.ex.ac.uk/people/mbate/Cluster/clusterMetallicity2.html
description: The article associated with this dataset is located in ORE at: http://hdl.handle.net/10871/35413