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Simulation Details:

Parameter DescriptionValue
simulation nameTNG50-2
alternative simulation nameL35n1080TNG
short description of runIntermediate resolution (level 2) IllustrisTNG50 run including the full TNG physics model.
side length of simulation box [ckpc/h]35000.0
average gas cell mass [10^10 msun/h] (0=no gas)4.591032e-05
dark matter particle mass [10^10 msun/h]0.000245894166901171
number of dark matter particles1259712000
number of gas tracer particles1259712000
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 modelsFiducial TNG Model
has radiative gas cooling (false for non-radiative runs)True
has star formation (false for non-radiative runs)True
has galactic-scale winds from star formation feedback (fiducial parameters)True
has supermassive blackhole formation, accretion, and feedback (fiducial parameters)True
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:

TNG50-2 has [100] snapshots available, with 16.5 TB total data volume.

Over all snapshots, have 126,218,074 FoF groups, 93,524,292 Subfind groups, and 249,304,651,387 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 1259711293 320 0 360 360   [Snapshot] (122.0 GB)   [Groupcat] (3.8 MB)
1 14.99 0.271 13.532 1259633084 14994 0 24048 23738   [Snapshot] (122.0 GB)   [Groupcat] (27.5 MB)
2 11.98 0.370 13.433 1258765090 87919 0 152864 147291   [Snapshot] (356.5 GB)   [Groupcat] (135.6 MB)
3 10.98 0.418 13.385 1257731153 142672 1 254307 241844   [Snapshot] (356.3 GB)   [Groupcat] (219.1 MB)
4 10.00 0.475 13.328 1255912694 220453 3 394300 369458   [Snapshot] (355.9 GB)   [Groupcat] (332.4 MB)
5 9.39 0.517 13.286 1254197954 287985 4 504255 467258   [Snapshot] (121.7 GB)   [Groupcat] (419.8 MB)
6 9.00 0.547 13.256 1252829782 333345 10 583076 536299   [Snapshot] (355.3 GB)   [Groupcat] (481.8 MB)
7 8.45 0.596 13.207 1250358799 428516 19 707300 643691   [Snapshot] (121.6 GB)   [Groupcat] (578.5 MB)
8 8.01 0.640 13.163 1247895642 524588 25 813113 734216   [Snapshot] (354.3 GB)   [Groupcat] (660.4 MB)
9 7.60 0.687 13.116 1245071387 651980 46 918880 822064   [Snapshot] (121.3 GB)   [Groupcat] (740.5 MB)
10 7.24 0.732 13.071 1242222698 800804 63 1013396 899363   [Snapshot] (121.1 GB)   [Groupcat] (811.3 MB)
11 7.01 0.764 13.039 1240165495 922398 76 1072915 948588   [Snapshot] (352.8 GB)   [Groupcat] (856.2 MB)
12 6.49 0.844 12.959 1234999196 1260032 149 1208878 1055859   [Snapshot] (120.8 GB)   [Groupcat] (955.6 MB)
13 6.01 0.932 12.871 1229278193 1715018 229 1330534 1148604   [Snapshot] (350.8 GB)   [Groupcat] (1.0 GB)
14 5.85 0.965 12.838 1228209464 1886985 281 1365116 1028112   [Snapshot] (120.5 GB)   [Groupcat] (973.0 MB)
15 5.53 1.036 12.767 1227094590 2288003 351 1392989 1078553   [Snapshot] (120.4 GB)   [Groupcat] (1011.6 MB)
16 5.23 1.112 12.691 1225595093 2772941 486 1389358 1112477   [Snapshot] (120.4 GB)   [Groupcat] (1.0 GB)
17 5.00 1.177 12.626 1224005801 3259434 565 1378559 1132088   [Snapshot] (350.0 GB)   [Groupcat] (1.0 GB)
18 4.66 1.282 12.521 1221314183 4152818 741 1362358 1140029   [Snapshot] (120.2 GB)   [Groupcat] (1.0 GB)
19 4.43 1.366 12.437 1219120335 4936915 846 1354877 1143076   [Snapshot] (120.1 GB)   [Groupcat] (1.0 GB)
20 4.18 1.466 12.337 1216763473 5871704 1069 1349445 1144886   [Snapshot] (120.1 GB)   [Groupcat] (1.0 GB)
21 4.01 1.540 12.263 1215151986 6670803 1182 1346732 1145710   [Snapshot] (348.8 GB)   [Groupcat] (1.0 GB)
22 3.71 1.689 12.115 1212322222 8292096 1392 1348325 1146373   [Snapshot] (119.9 GB)   [Groupcat] (1.0 GB)
23 3.49 1.812 11.991 1210192406 9733706 1648 1351585 1147001   [Snapshot] (119.9 GB)   [Groupcat] (1.0 GB)
24 3.28 1.944 11.859 1208047484 11392131 1765 1356355 1146334   [Snapshot] (119.9 GB)   [Groupcat] (1.0 GB)
25 3.01 2.145 11.658 1205098922 13973924 2126 1361174 1142896   [Snapshot] (348.1 GB)   [Groupcat] (1.0 GB)
26 2.90 2.238 11.565 1203910154 15270518 2267 1365017 1140542   [Snapshot] (119.8 GB)   [Groupcat] (1.0 GB)
27 2.73 2.384 11.419 1201988624 17322921 2343 1368972 1137302   [Snapshot] (119.8 GB)   [Groupcat] (1.0 GB)
28 2.58 2.539 11.264 1199779995 19673083 2602 1373330 1132964   [Snapshot] (119.8 GB)   [Groupcat] (1.0 GB)
29 2.44 2.685 11.118 1197818530 21828680 2684 1378702 1128345   [Snapshot] (119.8 GB)   [Groupcat] (1.0 GB)
30 2.32 2.839 10.964 1196004872 23996292 2774 1383312 1123814   [Snapshot] (119.9 GB)   [Groupcat] (1.0 GB)
31 2.21 2.981 10.823 1194313737 25957127 2862 1385283 1118946   [Snapshot] (119.9 GB)   [Groupcat] (1.0 GB)
32 2.10 3.129 10.674 1192601048 27995870 2919 1385285 1114096   [Snapshot] (119.9 GB)   [Groupcat] (1.0 GB)
33 2.00 3.285 10.519 1190845555 30141838 3014 1385173 1107987   [Snapshot] (348.3 GB)   [Groupcat] (1.0 GB)
34 1.90 3.447 10.356 1189044047 32436585 3187 1384022 1101824   [Snapshot] (119.9 GB)   [Groupcat] (1.0 GB)
35 1.82 3.593 10.210 1187403529 34501548 3267 1381411 1096138   [Snapshot] (119.9 GB)   [Groupcat] (1020.2 MB)
36 1.74 3.744 10.059 1185785765 36561107 3337 1380005 1089704   [Snapshot] (119.9 GB)   [Groupcat] (1015.8 MB)
37 1.67 3.902 9.901 1184190365 38687539 3294 1379800 1083840   [Snapshot] (120.0 GB)   [Groupcat] (1012.0 MB)
38 1.60 4.038 9.766 1182865227 40455339 3380 1378418 1078495   [Snapshot] (120.0 GB)   [Groupcat] (1008.3 MB)
39 1.53 4.206 9.597 1181196169 42672825 3428 1378766 1072815   [Snapshot] (120.0 GB)   [Groupcat] (1004.7 MB)
40 1.50 4.293 9.510 1180346313 43816607 3505 1377752 1068849   [Snapshot] (348.7 GB)   [Groupcat] (1001.9 MB)
41 1.41 4.502 9.301 1178424790 46471541 3521 1374830 1059923   [Snapshot] (120.0 GB)   [Groupcat] (995.6 MB)
42 1.36 4.657 9.147 1177046558 48386861 3575 1376234 1054089   [Snapshot] (120.1 GB)   [Groupcat] (992.1 MB)
43 1.30 4.816 8.987 1175627419 50377566 3530 1375278 1047374   [Snapshot] (120.1 GB)   [Groupcat] (987.6 MB)
44 1.25 4.980 8.823 1174290068 52305998 3576 1375608 1041243   [Snapshot] (120.1 GB)   [Groupcat] (983.7 MB)
45 1.21 5.115 8.688 1173187990 53863323 3628 1377062 1036372   [Snapshot] (120.1 GB)   [Groupcat] (980.9 MB)
46 1.15 5.289 8.514 1171795654 55799555 3683 1381796 1030438   [Snapshot] (120.1 GB)   [Groupcat] (978.2 MB)
47 1.11 5.431 8.372 1170712022 57365334 3650 1381647 1025331   [Snapshot] (120.2 GB)   [Groupcat] (974.9 MB)
48 1.07 5.577 8.226 1169612314 58959917 3695 1381604 1020360   [Snapshot] (120.2 GB)   [Groupcat] (971.7 MB)
49 1.04 5.726 8.077 1168520715 60572144 3753 1379469 1015080   [Snapshot] (120.2 GB)   [Groupcat] (967.8 MB)
50 1.00 5.878 7.925 1167443183 62140184 3719 1378666 1009682   [Snapshot] (349.6 GB)   [Groupcat] (964.2 MB)
51 0.95 6.073 7.730 1166151385 64002419 3792 1375891 1004101   [Snapshot] (120.2 GB)   [Groupcat] (959.9 MB)
52 0.92 6.193 7.610 1165375506 65080906 3849 1373869 999798   [Snapshot] (120.3 GB)   [Groupcat] (956.7 MB)
53 0.89 6.356 7.447 1164359746 66525775 3811 1373315 994735   [Snapshot] (120.3 GB)   [Groupcat] (953.4 MB)
54 0.85 6.522 7.281 1163303265 67971411 3862 1373700 989750   [Snapshot] (120.3 GB)   [Groupcat] (950.2 MB)
55 0.82 6.692 7.111 1162321979 69373485 3832 1371111 983804   [Snapshot] (120.3 GB)   [Groupcat] (945.8 MB)
56 0.79 6.822 6.981 1161591756 70394058 3868 1373115 980337   [Snapshot] (120.3 GB)   [Groupcat] (944.1 MB)
57 0.76 6.998 6.805 1160603019 71737398 3914 1373680 975733   [Snapshot] (120.3 GB)   [Groupcat] (941.2 MB)
58 0.73 7.132 6.671 1159888880 72724803 3884 1374278 971526   [Snapshot] (120.3 GB)   [Groupcat] (938.7 MB)
59 0.70 7.314 6.489 1158886104 74112964 3906 1375548 967412   [Snapshot] (350.1 GB)   [Groupcat] (936.3 MB)
60 0.68 7.453 6.350 1158132518 75138113 3884 1373787 963499   [Snapshot] (120.4 GB)   [Groupcat] (933.4 MB)
61 0.64 7.642 6.161 1157150495 76451077 3924 1369931 958357   [Snapshot] (120.4 GB)   [Groupcat] (929.2 MB)
62 0.62 7.786 6.017 1156441691 77401365 3891 1369429 955078   [Snapshot] (120.4 GB)   [Groupcat] (927.0 MB)
63 0.60 7.932 5.872 1155761342 78323966 3936 1369027 951756   [Snapshot] (120.4 GB)   [Groupcat] (924.8 MB)
64 0.58 8.079 5.724 1155078146 79256477 3902 1368424 948117   [Snapshot] (120.4 GB)   [Groupcat] (922.3 MB)
65 0.55 8.280 5.523 1154140184 80527973 3944 1371020 944121   [Snapshot] (120.4 GB)   [Groupcat] (920.3 MB)
66 0.52 8.432 5.371 1153430593 81494490 3917 1370232 940606   [Snapshot] (120.4 GB)   [Groupcat] (917.9 MB)
67 0.50 8.587 5.216 1152753221 82417229 3940 1373077 937305   [Snapshot] (350.4 GB)   [Groupcat] (916.4 MB)
68 0.48 8.743 5.060 1152062821 83335642 3916 1372694 934119   [Snapshot] (120.4 GB)   [Groupcat] (914.3 MB)
69 0.46 8.902 4.901 1151367159 84256395 3946 1372254 930850   [Snapshot] (120.4 GB)   [Groupcat] (912.1 MB)
70 0.44 9.062 4.741 1150635202 85191001 3909 1371174 927988   [Snapshot] (120.5 GB)   [Groupcat] (910.0 MB)
71 0.42 9.225 4.578 1149935669 86095391 3949 1370827 924790   [Snapshot] (120.5 GB)   [Groupcat] (907.9 MB)
72 0.40 9.389 4.414 1149252479 86976078 3911 1371597 922095   [Snapshot] (350.6 GB)   [Groupcat] (906.3 MB)
73 0.38 9.556 4.247 1148552776 87839139 3947 1368235 919193   [Snapshot] (120.5 GB)   [Groupcat] (903.7 MB)
74 0.36 9.724 4.079 1147859850 88690606 3912 1364341 916228   [Snapshot] (120.5 GB)   [Groupcat] (900.9 MB)
75 0.35 9.837 3.966 1147414144 89241559 3956 1362363 914185   [Snapshot] (120.5 GB)   [Groupcat] (899.1 MB)
76 0.33 10.009 3.794 1146759341 90039810 3931 1361550 911282   [Snapshot] (120.5 GB)   [Groupcat] (897.1 MB)
77 0.31 10.182 3.621 1146092657 90841894 3965 1358515 908688   [Snapshot] (120.5 GB)   [Groupcat] (894.7 MB)
78 0.30 10.299 3.504 1145667577 91358734 3947 1355528 906564   [Snapshot] (350.7 GB)   [Groupcat] (892.7 MB)
79 0.27 10.535 3.269 1144824583 92378467 3910 1353463 902469   [Snapshot] (120.5 GB)   [Groupcat] (889.6 MB)
80 0.26 10.654 3.149 1144409129 92877151 3942 1353911 900676   [Snapshot] (120.5 GB)   [Groupcat] (888.5 MB)
81 0.24 10.834 2.969 1143774524 93615067 3915 1353508 897299   [Snapshot] (120.5 GB)   [Groupcat] (886.3 MB)
82 0.23 11.016 2.787 1143161250 94320935 3952 1350900 894538   [Snapshot] (120.5 GB)   [Groupcat] (883.9 MB)
83 0.21 11.138 2.665 1142759325 94783734 3933 1349574 892255   [Snapshot] (120.5 GB)   [Groupcat] (882.1 MB)
84 0.20 11.323 2.480 1142149949 95490812 3952 1346083 889528   [Snapshot] (350.7 GB)   [Groupcat] (879.6 MB)
85 0.18 11.509 2.294 1141563189 96180016 3930 1343975 886118   [Snapshot] (120.5 GB)   [Groupcat] (876.9 MB)
86 0.17 11.635 2.169 1141170266 96635985 3915 1341571 884735   [Snapshot] (120.5 GB)   [Groupcat] (875.5 MB)
87 0.15 11.824 1.979 1140592369 97312122 3948 1339091 882031   [Snapshot] (120.5 GB)   [Groupcat] (873.2 MB)
88 0.14 11.951 1.852 1140209096 97764339 3932 1338002 880532   [Snapshot] (120.5 GB)   [Groupcat] (872.0 MB)
89 0.13 12.143 1.660 1139638369 98442781 3959 1336324 878162   [Snapshot] (120.5 GB)   [Groupcat] (870.1 MB)
90 0.11 12.337 1.466 1139076846 99103454 3932 1334491 875401   [Snapshot] (120.5 GB)   [Groupcat] (867.9 MB)
91 0.10 12.467 1.336 1138700799 99542767 3917 1332874 873979   [Snapshot] (350.8 GB)   [Groupcat] (866.6 MB)
92 0.08 12.663 1.140 1138145873 100175106 3942 1330376 871634   [Snapshot] (120.5 GB)   [Groupcat] (864.5 MB)
93 0.07 12.795 1.008 1137788956 100591673 3923 1328721 869996   [Snapshot] (120.5 GB)   [Groupcat] (863.1 MB)
94 0.06 12.993 0.810 1137243502 101213149 3957 1325572 867749   [Snapshot] (120.5 GB)   [Groupcat] (861.0 MB)
95 0.05 13.127 0.676 1136882532 101627851 3936 1324073 866472   [Snapshot] (120.5 GB)   [Groupcat] (859.8 MB)
96 0.03 13.328 0.475 1136333733 102243036 3956 1321504 864615   [Snapshot] (120.5 GB)   [Groupcat] (858.0 MB)
97 0.02 13.463 0.340 1135987370 102635294 3937 1319445 862736   [Snapshot] (120.5 GB)   [Groupcat] (856.4 MB)
98 0.01 13.667 0.136 1135469071 103220573 3916 1317288 860552   [Snapshot] (120.5 GB)   [Groupcat] (854.5 MB)
99 0.00 13.803 0.000 1135135195 103599364 3955 1316275 859077   [Snapshot] (350.8 GB)   [Groupcat] (853.3 MB)

Initial Conditions:

TNG50-2 has its initial conditions available.

simulation.hdf5 file:

TNG50-2 has the virtual 'simulation.hdf5' container file available.

Merger Trees:

TNG50-2 has the SubLink merger trees available: they contain the progenitor/descendant connectivity, and essentially all Subhalo properties.

TNG50-2 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:

TNG50-2 has the Stellar Circularities, Angular Momenta, and Axis Ratios catalog available.

TNG50-2 has the Subhalo Matching To Dark catalog available.

TNG50-2 has the Blackhole Mergers catalog available.

TNG50-2 has the Blackhole Details catalog available.

TNG50-2 has the Stellar Assembly catalog available.

TNG50-2 has the Subbox Subhalo List catalogs available.

TNG50-2 has the Star Formation Rates catalog available.

  • Coverage: All redshifts/snapshots. All subhalos above a minimum number of ~100 stellar particles.
  •   Star Formation Rates (~300 MB for TNG50-1, ~1.5 GB for TNG100-1, ~30 GB for TNG300-1)

TNG50-2 has the Aperture Masses (Total and Stellar) catalog available.

  • Coverage: All full snapshots from z=0 to z=1.5. All subhalos with at least one star (TNG50 and TNG100), or at least 1000 stars (for TNG300).
  •   Aperture Masses (Total and Stellar) (~50 MB for TNG50-1 to ~150 MB for TNG100-1)