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Public data release of the FIRE-2 cosmological zoom-in simulations of galaxy formation

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arxiv 2202.06969 v4 pith:KBAUKWU4 submitted 2022-02-14 astro-ph.GA astro-ph.COastro-ph.SR

classification astro-ph.GAastro-ph.COastro-ph.SR
keywords simulationsgalaxiesreleasesnapshotsparticlesacrossformationincluding
verification ladder T0 review T1 audit T2 compute T3 formal
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We describe a public data release of the FIRE-2 cosmological zoom-in simulations of galaxy formation, available at http://flathub.flatironinstitute.org/fire, from the Feedback In Realistic Environments (FIRE) project. FIRE-2 simulations achieve parsec-scale resolution to explicitly model the multi-phase interstellar medium while implementing direct models for stellar evolution and feedback, including stellar winds, core-collapse and Ia supernovae, radiation pressure, photoionization, and photoelectric heating. We release complete snapshots from 3 suites of simulations. The first comprises 20 simulations that zoom in on 14 Milky Way-mass galaxies, 5 SMC/LMC-mass galaxies, and 4 lower-mass galaxies including 1 ultra-faint; we release 39 snapshots across z = 0 - 10. The second comprises 4 massive galaxies, with 19 snapshots across z = 1 - 10. Finally, a high-redshift suite comprises 22 simulations, with 11 snapshots across z = 5 - 10. Each simulation also includes dozens of resolved lower-mass (satellite) galaxies in its zoom-in region. Snapshots include all stored properties for all dark matter, gas, and star particles, including 11 elemental abundances for stars and gas, and formation times (ages) of star particles. We also release accompanying (sub)halo catalogs, which include galaxy properties and member star particles. For the simulations to z = 0, including all Milky Way-mass galaxies, we release the formation coordinates and an "ex-situ" flag for all star particles, pointers to track particles across snapshots, catalogs of stellar streams, and multipole basis expansions for the halo mass distributions. We describe publicly available python packages for reading and analyzing these simulations.

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Cited by 2 Pith papers

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  1. Earth rotation turns event timing into a geometric probe of UHE neutrino origin

    hep-ph 2026-07 conditional novelty 6.0 of 10

    Earth-rotation timing lowers the number of future KM3NeT events needed to exclude a dark-matter origin of KM3-230213A from ~22–27 to ~14–16.

  2. Effect of gas accretion on $\alpha$-element bimodality in Milky Way-mass galaxies in the FIRE-2 simulations

    astro-ph.GA 2025-01 conditional novelty 6.0 of 10

    In FIRE-2 simulations, alpha-element bimodality in Milky Way-mass galaxies is not universal; its low-alpha sequence appears only in galaxies that accrete significant metal-poor gas at late times.

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