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Simulation Details:

Parameter DescriptionValue
simulation nameTNG50-4-Dark
alternative simulation nameL35n270TNG_DM
short description of runLowest resolution (level 4) IllustrisTNG50 run - dark matter only analog.
side length of simulation box [ckpc/h]35000.0
average gas cell mass [10^10 msun/h] (0=no gas)0.0
dark matter particle mass [10^10 msun/h]0.0186754872146347
number of dark matter particles19683000
number of gas tracer particles0
starting redshift (e.g. z=99)127.0
ending redshift (e.g. z=0)0.0
short description of cosmological parameters (e.g. 'WMAP-7')Planck2015
total matter density (e.g. 0.27)0.3089
dark energy density (e.g. 0.73)0.6911
baryonic matter density (e.g. 0.04)0.0486
hubble constant 'little h' in units of [100 km/s/Mpc]0.6774
short description of implemented physics modelsDM-only
has radiative gas cooling (false for non-radiative runs)False
has star formation (false for non-radiative runs)False
has galactic-scale winds from star formation feedback (fiducial parameters)False
has supermassive blackhole formation, accretion, and feedback (fiducial parameters)False
is a uniform mass, full periodic, cosmological volumeTrue
is a non-periodic subbox embedded within a larger volume (high time resolution)False
[friends of friends] group catalogs existTrue
[subfind] group catalogs existTrue
[rockstar] group catalogs existFalse
[lhalotree] merger tree existsTrue
[sublink] merger tree existsTrue
[consistent trees] merger tree existsFalse

Snapshot List:

TNG50-4-Dark has [100] snapshots available, with 72.6 GB total data volume.

Over all snapshots, have 1,736,818 FoF groups, 2,033,724 Subfind groups, and 1,968,300,000 particles.

Snapshot
[#]
Redshift Age
[Gyr]
Lookback
[Gyr]
Gas Cells
[#]
Stars
[#]
BHs
[#]
FoF
Groups [#]
Subfind
Groups [#]
Download
Snapshot
Download
FoF & Subfind
Download
Offsets
0 20.05 0.179 13.624 0 0 0 0 0   [Snapshot] (600.7 MB)   [Groupcat] (58.0 KB)
1 14.99 0.271 13.532 0 0 0 0 0   [Snapshot] (600.7 MB)   [Groupcat] (58.0 KB)
2 11.98 0.370 13.433 0 0 0 28 29   [Snapshot] (1.2 GB)   [Groupcat] (84.4 KB)
3 10.98 0.418 13.385 0 0 0 97 100   [Snapshot] (1.2 GB)   [Groupcat] (124.3 KB)
4 10.00 0.475 13.328 0 0 0 293 304   [Snapshot] (1.2 GB)   [Groupcat] (229.3 KB)
5 9.39 0.517 13.286 0 0 0 513 528   [Snapshot] (600.7 MB)   [Groupcat] (310.1 KB)
6 9.00 0.547 13.256 0 0 0 742 758   [Snapshot] (1.2 GB)   [Groupcat] (394.2 KB)
7 8.45 0.596 13.207 0 0 0 1159 1195   [Snapshot] (600.7 MB)   [Groupcat] (553.9 KB)
8 8.01 0.640 13.163 0 0 0 1636 1680   [Snapshot] (1.2 GB)   [Groupcat] (729.1 KB)
9 7.60 0.687 13.116 0 0 0 2312 2377   [Snapshot] (600.7 MB)   [Groupcat] (980.7 KB)
10 7.24 0.732 13.071 0 0 0 2937 3037   [Snapshot] (600.7 MB)   [Groupcat] (1.2 MB)
11 7.01 0.764 13.039 0 0 0 3492 3611   [Snapshot] (1.2 GB)   [Groupcat] (1.4 MB)
12 6.49 0.844 12.959 0 0 0 4785 4964   [Snapshot] (600.7 MB)   [Groupcat] (1.9 MB)
13 6.01 0.932 12.871 0 0 0 6480 6718   [Snapshot] (1.2 GB)   [Groupcat] (2.5 MB)
14 5.85 0.965 12.838 0 0 0 7039 7351   [Snapshot] (600.7 MB)   [Groupcat] (2.7 MB)
15 5.53 1.036 12.767 0 0 0 8330 8714   [Snapshot] (600.7 MB)   [Groupcat] (3.2 MB)
16 5.23 1.112 12.691 0 0 0 9752 10242   [Snapshot] (600.7 MB)   [Groupcat] (3.7 MB)
17 5.00 1.177 12.626 0 0 0 10876 11391   [Snapshot] (1.2 GB)   [Groupcat] (4.1 MB)
18 4.66 1.282 12.521 0 0 0 12517 13234   [Snapshot] (600.7 MB)   [Groupcat] (4.8 MB)
19 4.43 1.366 12.437 0 0 0 13729 14528   [Snapshot] (600.7 MB)   [Groupcat] (5.2 MB)
20 4.18 1.466 12.337 0 0 0 14970 15896   [Snapshot] (600.7 MB)   [Groupcat] (5.7 MB)
21 4.01 1.540 12.263 0 0 0 15702 16841   [Snapshot] (1.2 GB)   [Groupcat] (6.0 MB)
22 3.71 1.689 12.115 0 0 0 17090 18446   [Snapshot] (600.7 MB)   [Groupcat] (6.6 MB)
23 3.49 1.812 11.991 0 0 0 18129 19577   [Snapshot] (600.7 MB)   [Groupcat] (7.0 MB)
24 3.28 1.944 11.859 0 0 0 19076 20777   [Snapshot] (600.7 MB)   [Groupcat] (7.3 MB)
25 3.01 2.145 11.658 0 0 0 20039 22052   [Snapshot] (1.2 GB)   [Groupcat] (7.8 MB)
26 2.90 2.238 11.565 0 0 0 20406 22538   [Snapshot] (600.7 MB)   [Groupcat] (7.9 MB)
27 2.73 2.384 11.419 0 0 0 20916 23205   [Snapshot] (600.7 MB)   [Groupcat] (8.1 MB)
28 2.58 2.539 11.264 0 0 0 21298 23757   [Snapshot] (600.7 MB)   [Groupcat] (8.3 MB)
29 2.44 2.685 11.118 0 0 0 21585 24123   [Snapshot] (600.7 MB)   [Groupcat] (8.4 MB)
30 2.32 2.839 10.964 0 0 0 21901 24542   [Snapshot] (600.7 MB)   [Groupcat] (8.6 MB)
31 2.21 2.981 10.823 0 0 0 22154 24971   [Snapshot] (600.7 MB)   [Groupcat] (8.7 MB)
32 2.10 3.129 10.674 0 0 0 22319 25295   [Snapshot] (600.7 MB)   [Groupcat] (8.8 MB)
33 2.00 3.285 10.519 0 0 0 22467 25487   [Snapshot] (1.2 GB)   [Groupcat] (8.9 MB)
34 1.90 3.447 10.356 0 0 0 22542 25589   [Snapshot] (600.7 MB)   [Groupcat] (8.9 MB)
35 1.82 3.593 10.210 0 0 0 22565 25775   [Snapshot] (600.7 MB)   [Groupcat] (9.0 MB)
36 1.74 3.744 10.059 0 0 0 22491 25802   [Snapshot] (600.7 MB)   [Groupcat] (8.9 MB)
37 1.67 3.902 9.901 0 0 0 22490 25934   [Snapshot] (600.7 MB)   [Groupcat] (9.0 MB)
38 1.60 4.038 9.766 0 0 0 22477 25983   [Snapshot] (600.7 MB)   [Groupcat] (9.0 MB)
39 1.53 4.206 9.597 0 0 0 22477 26012   [Snapshot] (600.7 MB)   [Groupcat] (9.0 MB)
40 1.50 4.293 9.510 0 0 0 22442 26001   [Snapshot] (1.2 GB)   [Groupcat] (9.0 MB)
41 1.41 4.502 9.301 0 0 0 22518 26068   [Snapshot] (600.7 MB)   [Groupcat] (9.0 MB)
42 1.36 4.657 9.147 0 0 0 22496 26085   [Snapshot] (600.7 MB)   [Groupcat] (9.0 MB)
43 1.30 4.816 8.987 0 0 0 22463 26090   [Snapshot] (600.7 MB)   [Groupcat] (9.0 MB)
44 1.25 4.980 8.823 0 0 0 22426 26095   [Snapshot] (600.7 MB)   [Groupcat] (9.0 MB)
45 1.21 5.115 8.688 0 0 0 22247 25953   [Snapshot] (600.7 MB)   [Groupcat] (9.0 MB)
46 1.15 5.289 8.514 0 0 0 22161 25955   [Snapshot] (600.7 MB)   [Groupcat] (8.9 MB)
47 1.11 5.431 8.372 0 0 0 22129 25963   [Snapshot] (600.7 MB)   [Groupcat] (8.9 MB)
48 1.07 5.577 8.226 0 0 0 22196 25977   [Snapshot] (600.7 MB)   [Groupcat] (9.0 MB)
49 1.04 5.726 8.077 0 0 0 22063 25904   [Snapshot] (600.7 MB)   [Groupcat] (8.9 MB)
50 1.00 5.878 7.925 0 0 0 22053 25860   [Snapshot] (1.2 GB)   [Groupcat] (8.9 MB)
51 0.95 6.073 7.730 0 0 0 21853 25671   [Snapshot] (600.7 MB)   [Groupcat] (8.8 MB)
52 0.92 6.193 7.610 0 0 0 21829 25752   [Snapshot] (600.7 MB)   [Groupcat] (8.9 MB)
53 0.89 6.356 7.447 0 0 0 21754 25630   [Snapshot] (600.7 MB)   [Groupcat] (8.8 MB)
54 0.85 6.522 7.281 0 0 0 21632 25616   [Snapshot] (600.7 MB)   [Groupcat] (8.8 MB)
55 0.82 6.692 7.111 0 0 0 21573 25637   [Snapshot] (600.7 MB)   [Groupcat] (8.8 MB)
56 0.79 6.822 6.981 0 0 0 21472 25584   [Snapshot] (600.7 MB)   [Groupcat] (8.8 MB)
57 0.76 6.998 6.805 0 0 0 21372 25437   [Snapshot] (600.7 MB)   [Groupcat] (8.7 MB)
58 0.73 7.132 6.671 0 0 0 21345 25379   [Snapshot] (600.7 MB)   [Groupcat] (8.7 MB)
59 0.70 7.314 6.489 0 0 0 21381 25393   [Snapshot] (1.2 GB)   [Groupcat] (8.7 MB)
60 0.68 7.453 6.350 0 0 0 21181 25303   [Snapshot] (600.7 MB)   [Groupcat] (8.7 MB)
61 0.64 7.642 6.161 0 0 0 21169 25245   [Snapshot] (600.7 MB)   [Groupcat] (8.7 MB)
62 0.62 7.786 6.017 0 0 0 21063 25131   [Snapshot] (600.7 MB)   [Groupcat] (8.6 MB)
63 0.60 7.932 5.872 0 0 0 21061 25013   [Snapshot] (600.7 MB)   [Groupcat] (8.6 MB)
64 0.58 8.079 5.724 0 0 0 20968 24996   [Snapshot] (600.7 MB)   [Groupcat] (8.6 MB)
65 0.55 8.280 5.523 0 0 0 20874 24890   [Snapshot] (600.7 MB)   [Groupcat] (8.5 MB)
66 0.52 8.432 5.371 0 0 0 20812 24826   [Snapshot] (600.7 MB)   [Groupcat] (8.5 MB)
67 0.50 8.587 5.216 0 0 0 20671 24817   [Snapshot] (1.2 GB)   [Groupcat] (8.5 MB)
68 0.48 8.743 5.060 0 0 0 20666 24803   [Snapshot] (600.7 MB)   [Groupcat] (8.5 MB)
69 0.46 8.902 4.901 0 0 0 20603 24722   [Snapshot] (600.7 MB)   [Groupcat] (8.5 MB)
70 0.44 9.062 4.741 0 0 0 20570 24688   [Snapshot] (600.7 MB)   [Groupcat] (8.4 MB)
71 0.42 9.225 4.578 0 0 0 20475 24642   [Snapshot] (600.7 MB)   [Groupcat] (8.4 MB)
72 0.40 9.389 4.414 0 0 0 20406 24527   [Snapshot] (1.2 GB)   [Groupcat] (8.4 MB)
73 0.38 9.556 4.247 0 0 0 20346 24550   [Snapshot] (600.7 MB)   [Groupcat] (8.4 MB)
74 0.36 9.724 4.079 0 0 0 20211 24438   [Snapshot] (600.7 MB)   [Groupcat] (8.3 MB)
75 0.35 9.837 3.966 0 0 0 20220 24389   [Snapshot] (600.7 MB)   [Groupcat] (8.3 MB)
76 0.33 10.009 3.794 0 0 0 20179 24332   [Snapshot] (600.7 MB)   [Groupcat] (8.3 MB)
77 0.31 10.182 3.621 0 0 0 20082 24244   [Snapshot] (600.7 MB)   [Groupcat] (8.3 MB)
78 0.30 10.299 3.504 0 0 0 20084 24290   [Snapshot] (1.2 GB)   [Groupcat] (8.3 MB)
79 0.27 10.535 3.269 0 0 0 19946 24160   [Snapshot] (600.7 MB)   [Groupcat] (8.2 MB)
80 0.26 10.654 3.149 0 0 0 20042 24132   [Snapshot] (600.7 MB)   [Groupcat] (8.3 MB)
81 0.24 10.834 2.969 0 0 0 19851 23998   [Snapshot] (600.7 MB)   [Groupcat] (8.2 MB)
82 0.23 11.016 2.787 0 0 0 19783 23985   [Snapshot] (600.7 MB)   [Groupcat] (8.2 MB)
83 0.21 11.138 2.665 0 0 0 19756 23913   [Snapshot] (600.7 MB)   [Groupcat] (8.2 MB)
84 0.20 11.323 2.480 0 0 0 19603 23801   [Snapshot] (1.2 GB)   [Groupcat] (8.1 MB)
85 0.18 11.509 2.294 0 0 0 19513 23739   [Snapshot] (600.7 MB)   [Groupcat] (8.1 MB)
86 0.17 11.635 2.169 0 0 0 19449 23726   [Snapshot] (600.7 MB)   [Groupcat] (8.1 MB)
87 0.15 11.824 1.979 0 0 0 19357 23636   [Snapshot] (600.7 MB)   [Groupcat] (8.1 MB)
88 0.14 11.951 1.852 0 0 0 19315 23625   [Snapshot] (600.7 MB)   [Groupcat] (8.0 MB)
89 0.13 12.143 1.660 0 0 0 19252 23525   [Snapshot] (600.7 MB)   [Groupcat] (8.0 MB)
90 0.11 12.337 1.466 0 0 0 19116 23428   [Snapshot] (600.7 MB)   [Groupcat] (8.0 MB)
91 0.10 12.467 1.336 0 0 0 19058 23397   [Snapshot] (1.2 GB)   [Groupcat] (8.0 MB)
92 0.08 12.663 1.140 0 0 0 19084 23344   [Snapshot] (600.7 MB)   [Groupcat] (7.9 MB)
93 0.07 12.795 1.008 0 0 0 19048 23339   [Snapshot] (600.7 MB)   [Groupcat] (7.9 MB)
94 0.06 12.993 0.810 0 0 0 19081 23258   [Snapshot] (600.7 MB)   [Groupcat] (7.9 MB)
95 0.05 13.127 0.676 0 0 0 19053 23222   [Snapshot] (600.7 MB)   [Groupcat] (7.9 MB)
96 0.03 13.328 0.475 0 0 0 18966 23118   [Snapshot] (600.7 MB)   [Groupcat] (7.9 MB)
97 0.02 13.463 0.340 0 0 0 18976 23101   [Snapshot] (600.7 MB)   [Groupcat] (7.9 MB)
98 0.01 13.667 0.136 0 0 0 18888 23055   [Snapshot] (600.7 MB)   [Groupcat] (7.9 MB)
99 0.00 13.803 0.000 0 0 0 18824 22963   [Snapshot] (1.2 GB)   [Groupcat] (7.8 MB)

simulation.hdf5 file:

TNG50-4-Dark has the virtual 'simulation.hdf5' container file available.

Merger Trees:

TNG50-4-Dark has the SubLink merger trees available: they contain the progenitor/descendant connectivity, and essentially all Subhalo properties.

TNG50-4-Dark has the LHaloTree merger trees available: they contain the progenitor/descendant connectivity, and the most important Subhalo properties.

Note: Extracting sub-trees for individual galaxies or halos

The merger trees are generally quite large. If you are interested in making a galaxy/halo selection based on a complex criterion related to assembly history, merger history, etc, then you will need to download the full tree files. If, however, you are only looking to study the merger history of a few galaxies/halos, you should instead consider extracting sub-trees on the fly using the Web API.

Supplementary Data Catalogs:

Nothing extra currently available for this run.