tokens: ACKNOWLEDGEMENTS JMDK gratefully acknowledges funding from the German Research Foundation (DFG) in the form of an Emmy Noether Research Group (grant number KR4801/1-1, PI Kruijssen), from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme via the ERC Starting Grant MUSTANG (grant agreement number 714907, PI Kruijssen), and from Sonderforschungsbereich SFB 881 ‘The Milky Way System’ (subproject B2) of the DFG. JP and NB gratefully acknowledge funding from the ERC under the European Union’s Horizon 2020 research and innovation programme via the ERC Consolidator Grant Multi-Pop (grant agreement number 646928, PI Bastian). NB and RAC are Royal Society University Research Fellows. This work made use of high-performance computing facilities at Liverpool John Moores University, partly funded by the Royal Society and LJMU’s Faculty of Engineering and Technology. This work used the DiRAC Data Centric system at Durham University, operated by the Institute for Computational Cosmology on behalf of the STFC DiRAC HPC Facility ( www.dirac.ac.uk ). This equipment was funded by BIS National E-infrastructure capital grant ST/K00042X/1, STFC capital grants ST/H008519/1 and ST/K00087X/1, STFC DiRAC Operations grant ST/K003267/1 and Durham University. DiRAC is part of the National E-Infrastructure. This work has made use of numpy (van der Walt, Colbert Varoquaux 2011 ), scipy (Jones et al. 2001 ), and astropy (Astropy Collaboration 2013 ). All figures in this paper were produced using the python library matplotlib (Hunter 2007 ). The authors thank Marta Reina-Campos, Benjamin Keller, and Mélanie Chevance for advice and helpful discussions during the development of this work. We thank an anonymous referee for comments that improved the presentation of this paper.
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