Welcome! You are currently not logged in. Note that in order to access any Illustris data products, you will need to first Login.
Don't have an account yet? Easily solved with a new User Registration.

Simulation Details:

ParameterValueDescription
nameIllustris-2-Darksimulation name
name altL75n910DMalternative simulation name
descriptionIntermediate resolution (level 2) Illustris run - dark matter only analog.short description of run
boxsize75000.0side length of simulation box [ckpc/h]
mass gas0.0average gas cell mass [10^10 msun/h] (0=no gas)
mass dm0.00423571427457dark matter particle mass [10^10 msun/h]
num dm753571000number of dark matter particles
num tr mc0number of gas tracer particles
z start127.0starting redshift (e.g. z=99)
z final0.0ending redshift (e.g. z=0)
cosmologyWMAP-9short description of cosmological parameters (e.g. 'WMAP-7')
omega 00.2726total matter density (e.g. 0.27)
omega L0.7274dark energy density (e.g. 0.73)
omega B0.0baryonic matter density (e.g. 0.04)
hubble0.704hubble constant 'little h' in units of [100 km/s/Mpc]
physics modelDM-onlyshort description of implemented physics models
has coolingFalseradiative gas cooling (false for non-radiative runs)
has starformationFalsestar formation (false for non-radiative runs)
has windsFalsegalactic-scale winds from star formation feedback (fiducial parameters)
has blackholesFalsesupermassive blackhole formation, accretion, and feedback channels, fiducial parameters
is uniformTrueuniform mass, full periodic, cosmological volume
is subboxFalsenon-periodic subbox embedded within a larger volume (high time resolution)
has fofTrue[friends of friends] group catalogs exist
has subfindTrue[subfind] group catalogs exist
has rockstarFalse[rockstar] group catalogs exist
has lhalotreeFalse[lhalotree] merger tree exists
has sublinkTrue[sublink] merger tree exists
has ctreesFalse[consistent trees] merger tree exists

Snapshot List:

Illustris-2-Dark has [136] snapshots available, with 3.4 TB total data volume.

Over all snapshots, have 61,724,462 FoF groups, 70,570,301 Subfind groups, and 102,485,656,000 particles.

Snapshot
[#]
Redshift Age
[Gyr]
Lookback
[Gyr]
Gas Cells
[#]
Stars
[#]
BHs
[#]
FoF
Groups [#]
Subfind
Groups [#]
Download
Snapshot
Download
FoF & Subfind
0 46.77 0.054 13.698 0 0 0 0 0   [Snapshot] (25.3 GB)   [Groupcat] (153.8 KB)
1 44.56 0.058 13.694 0 0 0 0 0   [Snapshot] (25.3 GB)   [Groupcat] (153.8 KB)
2 42.45 0.062 13.690 0 0 0 0 0   [Snapshot] (25.3 GB)   [Groupcat] (153.8 KB)
3 40.64 0.066 13.686 0 0 0 0 0   [Snapshot] (25.3 GB)   [Groupcat] (153.8 KB)
4 38.71 0.071 13.681 0 0 0 0 0   [Snapshot] (25.3 GB)   [Groupcat] (153.8 KB)
5 36.87 0.076 13.676 0 0 0 0 0   [Snapshot] (25.3 GB)   [Groupcat] (153.8 KB)
6 35.12 0.082 13.670 0 0 0 0 0   [Snapshot] (25.3 GB)   [Groupcat] (153.8 KB)
7 33.61 0.087 13.665 0 0 0 0 0   [Snapshot] (25.3 GB)   [Groupcat] (153.8 KB)
8 32.01 0.094 13.658 0 0 0 0 0   [Snapshot] (25.3 GB)   [Groupcat] (153.8 KB)
9 30.48 0.100 13.651 0 0 0 0 0   [Snapshot] (25.3 GB)   [Groupcat] (153.8 KB)
10 29.03 0.108 13.644 0 0 0 0 0   [Snapshot] (25.3 GB)   [Groupcat] (153.8 KB)
11 27.64 0.116 13.636 0 0 0 0 0   [Snapshot] (25.3 GB)   [Groupcat] (153.8 KB)
12 26.44 0.123 13.628 0 0 0 0 0   [Snapshot] (25.3 GB)   [Groupcat] (153.8 KB)
13 25.17 0.132 13.619 0 0 0 0 0   [Snapshot] (25.3 GB)   [Groupcat] (153.8 KB)
14 23.96 0.142 13.609 0 0 0 0 0   [Snapshot] (25.3 GB)   [Groupcat] (153.8 KB)
15 22.81 0.153 13.599 0 0 0 0 0   [Snapshot] (25.3 GB)   [Groupcat] (153.8 KB)
16 21.81 0.163 13.589 0 0 0 0 0   [Snapshot] (25.3 GB)   [Groupcat] (153.8 KB)
17 20.76 0.175 13.577 0 0 0 0 0   [Snapshot] (25.3 GB)   [Groupcat] (153.8 KB)
18 19.75 0.188 13.564 0 0 0 0 0   [Snapshot] (25.3 GB)   [Groupcat] (153.8 KB)
19 18.79 0.201 13.550 0 0 0 0 0   [Snapshot] (25.3 GB)   [Groupcat] (153.8 KB)
20 17.96 0.215 13.537 0 0 0 1 1   [Snapshot] (25.3 GB)   [Groupcat] (169.5 KB)
21 17.09 0.231 13.521 0 0 0 8 8   [Snapshot] (25.3 GB)   [Groupcat] (171.8 KB)
22 16.25 0.248 13.504 0 0 0 28 28   [Snapshot] (25.3 GB)   [Groupcat] (224.0 KB)
23 15.45 0.266 13.486 0 0 0 80 80   [Snapshot] (25.3 GB)   [Groupcat] (334.3 KB)
24 14.76 0.283 13.468 0 0 0 205 206   [Snapshot] (25.3 GB)   [Groupcat] (621.2 KB)
25 14.03 0.304 13.447 0 0 0 519 527   [Snapshot] (25.3 GB)   [Groupcat] (789.3 KB)
26 13.34 0.327 13.425 0 0 0 1120 1137   [Snapshot] (25.3 GB)   [Groupcat] (1011.6 KB)
27 12.67 0.351 13.401 0 0 0 2280 2325   [Snapshot] (25.3 GB)   [Groupcat] (1.4 MB)
28 12.04 0.376 13.375 0 0 0 4318 4403   [Snapshot] (25.3 GB)   [Groupcat] (2.2 MB)
29 11.50 0.401 13.350 0 0 0 7274 7431   [Snapshot] (25.3 GB)   [Groupcat] (3.2 MB)
30 10.92 0.431 13.321 0 0 0 12164 12463   [Snapshot] (25.3 GB)   [Groupcat] (4.9 MB)
31 10.37 0.463 13.289 0 0 0 19610 20150   [Snapshot] (25.3 GB)   [Groupcat] (7.5 MB)
32 10.00 0.486 13.265 0 0 0 26664 27420   [Snapshot] (25.3 GB)   [Groupcat] (10.0 MB)
33 9.84 0.497 13.255 0 0 0 30315 31168   [Snapshot] (25.3 GB)   [Groupcat] (11.3 MB)
34 9.39 0.529 13.222 0 0 0 43012 44299   [Snapshot] (25.3 GB)   [Groupcat] (15.8 MB)
35 9.00 0.560 13.191 0 0 0 56997 58778   [Snapshot] (25.3 GB)   [Groupcat] (20.8 MB)
36 8.91 0.568 13.183 0 0 0 60949 62841   [Snapshot] (25.3 GB)   [Groupcat] (22.2 MB)
37 8.45 0.610 13.141 0 0 0 83080 85814   [Snapshot] (25.3 GB)   [Groupcat] (30.1 MB)
38 8.01 0.655 13.096 0 0 0 109691 113360   [Snapshot] (25.3 GB)   [Groupcat] (39.5 MB)
39 7.60 0.703 13.048 0 0 0 140207 145342   [Snapshot] (25.3 GB)   [Groupcat] (50.5 MB)
40 7.24 0.750 13.002 0 0 0 171131 177751   [Snapshot] (25.3 GB)   [Groupcat] (61.6 MB)
41 7.01 0.782 12.969 0 0 0 193327 201123   [Snapshot] (25.3 GB)   [Groupcat] (69.5 MB)
42 6.86 0.805 12.947 0 0 0 208759 217316   [Snapshot] (25.3 GB)   [Groupcat] (75.1 MB)
43 6.49 0.864 12.888 0 0 0 249437 260455   [Snapshot] (25.3 GB)   [Groupcat] (89.8 MB)
44 6.14 0.927 12.824 0 0 0 291640 305326   [Snapshot] (25.3 GB)   [Groupcat] (105.0 MB)
45 6.01 0.954 12.797 0 0 0 309277 324037   [Snapshot] (25.3 GB)   [Groupcat] (111.4 MB)
46 5.85 0.989 12.763 0 0 0 330757 347061   [Snapshot] (25.3 GB)   [Groupcat] (119.2 MB)
47 5.53 1.061 12.690 0 0 0 374122 393904   [Snapshot] (25.3 GB)   [Groupcat] (135.1 MB)
48 5.23 1.139 12.613 0 0 0 417058 440756   [Snapshot] (25.3 GB)   [Groupcat] (150.9 MB)
49 5.00 1.205 12.546 0 0 0 450268 477562   [Snapshot] (25.3 GB)   [Groupcat] (163.3 MB)
50 4.94 1.223 12.529 0 0 0 458431 486529   [Snapshot] (25.3 GB)   [Groupcat] (166.3 MB)
51 4.66 1.312 12.439 0 0 0 497168 530221   [Snapshot] (25.3 GB)   [Groupcat] (180.9 MB)
52 4.43 1.399 12.353 0 0 0 530077 567570   [Snapshot] (25.3 GB)   [Groupcat] (193.3 MB)
53 4.18 1.501 12.251 0 0 0 563829 607018   [Snapshot] (25.3 GB)   [Groupcat] (206.4 MB)
54 4.01 1.577 12.175 0 0 0 585310 632590   [Snapshot] (25.3 GB)   [Groupcat] (214.8 MB)
55 3.94 1.611 12.141 0 0 0 594367 643450   [Snapshot] (25.3 GB)   [Groupcat] (218.4 MB)
56 3.71 1.728 12.023 0 0 0 621449 676098   [Snapshot] (25.3 GB)   [Groupcat] (229.1 MB)
57 3.49 1.855 11.897 0 0 0 645629 705751   [Snapshot] (25.3 GB)   [Groupcat] (238.7 MB)
58 3.28 1.990 11.762 0 0 0 666596 732442   [Snapshot] (25.3 GB)   [Groupcat] (247.3 MB)
59 3.08 2.134 11.617 0 0 0 684870 755840   [Snapshot] (25.3 GB)   [Groupcat] (254.9 MB)
60 3.01 2.195 11.556 0 0 0 691396 764698   [Snapshot] (25.3 GB)   [Groupcat] (257.7 MB)
61 2.90 2.289 11.462 0 0 0 699374 776227   [Snapshot] (25.3 GB)   [Groupcat] (261.3 MB)
62 2.73 2.438 11.313 0 0 0 710824 792153   [Snapshot] (25.3 GB)   [Groupcat] (266.3 MB)
63 2.58 2.596 11.155 0 0 0 719307 805059   [Snapshot] (25.3 GB)   [Groupcat] (270.3 MB)
64 2.44 2.745 11.006 0 0 0 726372 816019   [Snapshot] (25.3 GB)   [Groupcat] (273.6 MB)
65 2.32 2.902 10.849 0 0 0 730864 823806   [Snapshot] (25.3 GB)   [Groupcat] (275.9 MB)
66 2.21 3.047 10.705 0 0 0 734784 830521   [Snapshot] (25.3 GB)   [Groupcat] (278.0 MB)
67 2.10 3.198 10.554 0 0 0 736427 835674   [Snapshot] (25.3 GB)   [Groupcat] (279.3 MB)
68 2.00 3.356 10.396 0 0 0 738574 839573   [Snapshot] (25.3 GB)   [Groupcat] (280.5 MB)
69 1.90 3.522 10.230 0 0 0 739486 842350   [Snapshot] (25.3 GB)   [Groupcat] (281.2 MB)
70 1.82 3.669 10.082 0 0 0 739371 844338   [Snapshot] (25.3 GB)   [Groupcat] (281.7 MB)
71 1.74 3.823 9.928 0 0 0 740055 845947   [Snapshot] (25.3 GB)   [Groupcat] (282.1 MB)
72 1.67 3.983 9.769 0 0 0 739413 846706   [Snapshot] (25.3 GB)   [Groupcat] (282.3 MB)
73 1.60 4.120 9.631 0 0 0 739092 847158   [Snapshot] (25.3 GB)   [Groupcat] (282.3 MB)
74 1.53 4.291 9.460 0 0 0 737766 846799   [Snapshot] (25.3 GB)   [Groupcat] (282.1 MB)
75 1.47 4.438 9.313 0 0 0 736774 846074   [Snapshot] (25.3 GB)   [Groupcat] (281.8 MB)
76 1.41 4.590 9.161 0 0 0 735308 845927   [Snapshot] (25.3 GB)   [Groupcat] (281.6 MB)
77 1.36 4.747 9.005 0 0 0 733025 844001   [Snapshot] (25.3 GB)   [Groupcat] (280.9 MB)
78 1.30 4.908 8.844 0 0 0 731359 842772   [Snapshot] (25.3 GB)   [Groupcat] (280.4 MB)
79 1.25 5.074 8.678 0 0 0 728962 840951   [Snapshot] (25.3 GB)   [Groupcat] (279.7 MB)
80 1.21 5.210 8.542 0 0 0 726443 838875   [Snapshot] (25.3 GB)   [Groupcat] (278.9 MB)
81 1.15 5.384 8.367 0 0 0 723987 836836   [Snapshot] (25.3 GB)   [Groupcat] (278.2 MB)
82 1.11 5.527 8.224 0 0 0 721909 835195   [Snapshot] (25.3 GB)   [Groupcat] (277.6 MB)
83 1.07 5.674 8.078 0 0 0 720255 833611   [Snapshot] (25.3 GB)   [Groupcat] (277.0 MB)
84 1.04 5.824 7.928 0 0 0 718112 830921   [Snapshot] (25.3 GB)   [Groupcat] (276.1 MB)
85 1.00 5.977 7.775 0 0 0 716019 829270   [Snapshot] (25.3 GB)   [Groupcat] (275.5 MB)
86 0.99 6.015 7.736 0 0 0 715738 828501   [Snapshot] (25.3 GB)   [Groupcat] (275.3 MB)
87 0.95 6.172 7.579 0 0 0 712877 825987   [Snapshot] (25.3 GB)   [Groupcat] (274.4 MB)
88 0.92 6.292 7.459 0 0 0 711106 824277   [Snapshot] (25.3 GB)   [Groupcat] (273.8 MB)
89 0.89 6.455 7.296 0 0 0 708829 821618   [Snapshot] (25.3 GB)   [Groupcat] (272.9 MB)
90 0.85 6.622 7.130 0 0 0 706691 819495   [Snapshot] (25.3 GB)   [Groupcat] (272.2 MB)
91 0.82 6.791 6.960 0 0 0 704614 816836   [Snapshot] (25.3 GB)   [Groupcat] (271.3 MB)
92 0.79 6.921 6.831 0 0 0 702643 814983   [Snapshot] (25.3 GB)   [Groupcat] (270.7 MB)
93 0.76 7.096 6.656 0 0 0 700968 812949   [Snapshot] (25.3 GB)   [Groupcat] (270.0 MB)
94 0.73 7.230 6.522 0 0 0 698474 810864   [Snapshot] (25.3 GB)   [Groupcat] (269.2 MB)
95 0.70 7.411 6.340 0 0 0 696409 808174   [Snapshot] (25.3 GB)   [Groupcat] (268.4 MB)
96 0.68 7.550 6.202 0 0 0 694094 806156   [Snapshot] (25.3 GB)   [Groupcat] (267.6 MB)
97 0.64 7.737 6.015 0 0 0 691663 803160   [Snapshot] (25.3 GB)   [Groupcat] (266.7 MB)
98 0.62 7.880 5.872 0 0 0 689724 801445   [Snapshot] (25.3 GB)   [Groupcat] (266.0 MB)
99 0.60 8.024 5.727 0 0 0 687446 799182   [Snapshot] (25.3 GB)   [Groupcat] (265.2 MB)
100 0.58 8.171 5.581 0 0 0 685335 796948   [Snapshot] (25.3 GB)   [Groupcat] (264.5 MB)
101 0.55 8.369 5.383 0 0 0 682500 794101   [Snapshot] (25.3 GB)   [Groupcat] (263.5 MB)
102 0.52 8.520 5.232 0 0 0 680663 792202   [Snapshot] (25.3 GB)   [Groupcat] (262.8 MB)
103 0.50 8.672 5.079 0 0 0 678625 790318   [Snapshot] (25.3 GB)   [Groupcat] (262.2 MB)
104 0.48 8.827 4.925 0 0 0 676044 788057   [Snapshot] (25.3 GB)   [Groupcat] (261.4 MB)
105 0.46 8.983 4.769 0 0 0 674785 786218   [Snapshot] (25.3 GB)   [Groupcat] (260.8 MB)
106 0.44 9.141 4.610 0 0 0 672991 783843   [Snapshot] (25.3 GB)   [Groupcat] (260.0 MB)
107 0.42 9.301 4.451 0 0 0 670600 781857   [Snapshot] (25.3 GB)   [Groupcat] (259.3 MB)
108 0.40 9.463 4.289 0 0 0 668981 779330   [Snapshot] (25.3 GB)   [Groupcat] (258.5 MB)
109 0.38 9.626 4.125 0 0 0 667238 777710   [Snapshot] (25.3 GB)   [Groupcat] (257.9 MB)
110 0.36 9.791 3.960 0 0 0 665544 775791   [Snapshot] (25.3 GB)   [Groupcat] (257.3 MB)
111 0.35 9.902 3.849 0 0 0 664131 774729   [Snapshot] (25.3 GB)   [Groupcat] (256.9 MB)
112 0.33 10.070 3.681 0 0 0 663153 772334   [Snapshot] (25.3 GB)   [Groupcat] (256.2 MB)
113 0.31 10.240 3.511 0 0 0 661556 770395   [Snapshot] (25.3 GB)   [Groupcat] (255.6 MB)
114 0.29 10.411 3.340 0 0 0 659743 768622   [Snapshot] (25.3 GB)   [Groupcat] (255.0 MB)
115 0.27 10.585 3.167 0 0 0 657666 766539   [Snapshot] (25.3 GB)   [Groupcat] (254.2 MB)
116 0.26 10.701 3.051 0 0 0 656149 765129   [Snapshot] (25.3 GB)   [Groupcat] (253.7 MB)
117 0.24 10.876 2.875 0 0 0 654528 763312   [Snapshot] (25.3 GB)   [Groupcat] (253.1 MB)
118 0.23 11.054 2.698 0 0 0 652380 761332   [Snapshot] (25.3 GB)   [Groupcat] (252.4 MB)
119 0.21 11.173 2.579 0 0 0 651162 760149   [Snapshot] (25.3 GB)   [Groupcat] (252.0 MB)
120 0.20 11.353 2.399 0 0 0 649581 758166   [Snapshot] (25.3 GB)   [Groupcat] (251.4 MB)
121 0.18 11.534 2.218 0 0 0 647627 756448   [Snapshot] (25.3 GB)   [Groupcat] (250.7 MB)
122 0.17 11.656 2.096 0 0 0 646321 755093   [Snapshot] (25.3 GB)   [Groupcat] (250.3 MB)
123 0.15 11.839 1.912 0 0 0 644058 752913   [Snapshot] (25.3 GB)   [Groupcat] (249.5 MB)
124 0.14 11.963 1.789 0 0 0 643325 751820   [Snapshot] (25.3 GB)   [Groupcat] (249.2 MB)
125 0.13 12.149 1.603 0 0 0 641408 750353   [Snapshot] (25.3 GB)   [Groupcat] (248.6 MB)
126 0.11 12.336 1.415 0 0 0 639819 748557   [Snapshot] (25.3 GB)   [Groupcat] (248.0 MB)
127 0.10 12.462 1.289 0 0 0 638546 747651   [Snapshot] (25.3 GB)   [Groupcat] (247.7 MB)
128 0.08 12.652 1.100 0 0 0 637058 745741   [Snapshot] (25.3 GB)   [Groupcat] (247.0 MB)
129 0.07 12.779 0.972 0 0 0 635699 744646   [Snapshot] (25.3 GB)   [Groupcat] (246.6 MB)
130 0.06 12.971 0.780 0 0 0 633723 742699   [Snapshot] (25.3 GB)   [Groupcat] (246.0 MB)
131 0.05 13.100 0.652 0 0 0 632389 741204   [Snapshot] (25.3 GB)   [Groupcat] (245.5 MB)
132 0.03 13.294 0.458 0 0 0 630531 739623   [Snapshot] (25.3 GB)   [Groupcat] (244.9 MB)
133 0.02 13.424 0.327 0 0 0 629035 738341   [Snapshot] (25.3 GB)   [Groupcat] (244.4 MB)
134 0.01 13.620 0.131 0 0 0 627355 736710   [Snapshot] (25.3 GB)   [Groupcat] (243.8 MB)
135 0.00 13.752 0.000 0 0 0 625655 735751   [Snapshot] (25.3 GB)   [Groupcat] (243.4 MB)

Merger Trees:

Illustris-2-Dark has the SubLink merger trees available. In addition to progenitor/descendant connectivity, it includes essentially all properties from the Subfind group catalogs.

Illustris-2-Dark does not currently have the LHaloTree merger trees available.

Illustris-2-Dark does not currently have the Consistent Trees (Rockstar) merger trees available.

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.