4.2 Article

The illustris simulation: Public data release

期刊

ASTRONOMY AND COMPUTING
卷 13, 期 -, 页码 12-37

出版社

ELSEVIER SCIENCE BV
DOI: 10.1016/j.ascom.2015.09.003

关键词

Methods: data analysis; Methods: numerical; Galaxies: formation; Galaxies: evolution; Data management systems; Data access methods

资金

  1. HST [HST-AR-13897, HST-AR-12856.01-A, HST-AR-13887.004-A, 12856, 13887]
  2. NASA through Hubble Fellowship [HST-HF2-51341 001-A]
  3. STScI
  4. NASA [NAS5-26555]
  5. European Research Council under ERC-StG grant [EXAGAL-308037]
  6. DFG Priority Program SPPEXA through project EXAMAG
  7. NASA ATP Grant [NNX14AH35G]
  8. NASA through Einstein Fellowship [PF2-130093]
  9. NASA grant [NNX12AC67G]
  10. NSF [AST-1312095]
  11. STFC [ST/L000725/1] Funding Source: UKRI
  12. Science and Technology Facilities Council [ST/L000725/1] Funding Source: researchfish
  13. NASA [NNX12AC67G, 52414] Funding Source: Federal RePORTER

向作者/读者索取更多资源

We present the full public release of all data from the Illustris simulation project. Illustris is a suite of large volume, cosmological hydrodynamical simulations run with the moving-mesh code AREPO and including a comprehensive set of physical models critical for following the formation and evolution of galaxies across cosmic time. Each simulates a volume of (106.5 Mpc)(3) and self-consistently evolves five different types of resolution elements from a starting redshift of z = 127 to the present day, z = 0. These components are: dark matter particles, gas cells, passive gas tracers, stars and stellar wind particles, and supermassive black holes. This data release includes the snapshots at all 136 available redshifts, halo and subhalo catalogs at each snapshot, and two distinct merger trees. Six primary realizations of the Illustris volume are released, including the flagship Illustris-1 run. These include three resolution levels with the fiducial full baryonic physics model, and a dark matter only analog for each. In addition, we provide four distinct, high time resolution, smaller volume subboxes. The total data volume is 265 TB, including 800 full volume snapshots and similar to 30,000 subbox snapshots. We describe the released data products as well as tools we have developed for their analysis. All data may be directly downloaded in its native HDF5 format. Additionally, we release a comprehensive, web-based API which allows programmatic access to search and data processing tasks. In both cases we provide example scripts and a getting-started guide in several languages: currently, IDL, Python, and Matlab. This paper addresses scientific issues relevant for the interpretation of the simulations, serves as a pointer to published and on-line documentation of the project, describes planned future additional data releases, and discusses technical aspects of the release. (C) 2015 Elsevier B.V. All rights reserved.

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