All of the results and data products of the Illustris simulation project, as described in Nelson+ (2015), are made publicly available on this page. A number of tools for exploration and analysis are provided as a starting point.
Looking for IllustrisTNG data? Please go to the TNG data release website.
There are two fundamental ways you can engage with the Illustris data:
These two approaches can be combined. For example, you may be forced to download the full z=0 group catalog in order to perform a complex search not supported by the API. After locally determining a sample of interesting galaxies, you could then extract their individual merger trees (and/or raw particle data) without needing to download the full simulation merger tree (or a full snapshot).
There are three primary types of data for each simulation: snapshots, group catalogs, and merger trees. In addition, certain runs and/or snapshots may have additional data catalogs. Select a simulation to browse the available data files and get direct download links:
| Simulation Name | $L_{\rm box} [Mpc]$ | $N_{\rm DM}$ | $m_{\rm DM}$ $[M_\odot]$ | $m_{\rm gas}$ $[M_\odot]$ | $N_{\rm snap}$ | $N_{\rm Subfind} (z=0)$ | Snaps | FoF | Subfind | SubLink | LHaloTree |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Illustris-1 | $106.5$ | $1820^3$ | $6.3 \times 10^{6}$ | $1.3 \times 10^{6}$ | $134$ | $4366546$ | |||||
| Illustris-1-Dark | $106.5$ | $1820^3$ | $7.5 \times 10^{6}$ | $0$ | $136$ | $4872374$ | |||||
| Illustris-2 | $106.5$ | $910^3$ | $5.0 \times 10^{7}$ | $1.0 \times 10^{7}$ | $136$ | $689785$ | |||||
| Illustris-2-Dark | $106.5$ | $910^3$ | $6.0 \times 10^{7}$ | $0$ | $136$ | $735751$ | |||||
| Illustris-3 | $106.5$ | $455^3$ | $4.0 \times 10^{8}$ | $8.1 \times 10^{7}$ | $136$ | $121209$ | |||||
| Illustris-3-Dark | $106.5$ | $455^3$ | $4.8 \times 10^{8}$ | $0$ | $136$ | $111992$ |
Currently showing 6 runs with
814 total snapshots and
250.0 TB total data volume,
including
1,259,309,875 FoF groups,
1,175,372,132 Subfind groups, and
2,765,286,583,516 particles.
| Simulation Name | Parent Sim | $L_{\rm box} [Mpc]$ | $N_{\rm DM} (z=0)$ | $m_{\rm DM}$ $[M_\odot]$ | $N_{\rm snap}$ | Snaps | FoF | Subfind |
|---|---|---|---|---|---|---|---|---|
| Subboxes: Didn't find anything available for you (try logging in). | ||||||||
Subboxes: currently showing 0 runs with 0 total snapshots and 0 bytes total data volume, including 0 FoF groups, 0 Subfind groups, and 0 particles.
| Simulation Name | Description | $m_{\rm DM}$ $[M_\odot]$ | $N_{\rm snap}$ |
|---|---|---|---|
| Other Runs: Didn't find anything else for you at the moment (if you were expecting to have access to additional data, contact us). | |||
Other runs: currently showing 0 runs with
0 total snapshots and
0 bytes total data volume,
including
0 FoF groups,
0 Subfind groups, and
0 particles.
No need to write code to explore -- by drilling down on interesting objects within any of these browser-based tools you can: get properties, render and explore merger trees, extract particle data cutouts from the snapshots, and see available visualizations.
We welcome community involvement in this project. Have some (fast) python code that performs a specific analysis task on a galaxy, and want to add it to the API so that it can be run on-the-fly? Have some (slow, complex) code that you have developed on a single halo cutout, and would like us to run it on all halos and make the results available as a supplementary data product? Get in touch!