Public Data Access Overview / Illustris-2 (Data Downloads)

Simulation Details:

Parameter Description	Value
simulation name	Illustris-2
alternative simulation name	L75n910FP
short description of run	Intermediate resolution (level 2) Illustris run including the full physics model.
side length of simulation box [ckpc/h]	75000.0
average gas cell mass [10^10 msun/h] (0=no gas)	0.0007085424
dark matter particle mass [10^10 msun/h]	0.00352717219488877
number of dark matter particles	753571000
number of gas tracer particles	753571000
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')	WMAP-9
total matter density (e.g. 0.27)	0.2726
dark energy density (e.g. 0.73)	0.7274
baryonic matter density (e.g. 0.04)	0.0456
hubble constant 'little h' in units of [100 km/s/Mpc]	0.704
short description of implemented physics models	Fiducial Illustris 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 volume	True
is a non-periodic subbox embedded within a larger volume (high time resolution)	False
[friends of friends] group catalogs exist	True
[subfind] group catalogs exist	True
[rockstar] group catalogs exist	False
[lhalotree] merger tree exists	True
[sublink] merger tree exists	True
[consistent trees] merger tree exists	False

Snapshot List:

Illustris-2 has [136] snapshots available, with 23.4 TB total data volume.

Over all snapshots, have 83,135,795 FoF groups, 75,614,755 Subfind groups, and 203,186,937,107 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	753571000	0	0	0	0	[Snapshot] (176.9 GB)	[Groupcat] (1.2 MB)
1	44.56	0.058	13.694	753571000	0	0	0	0	[Snapshot] (176.9 GB)	[Groupcat] (1.2 MB)
2	42.45	0.062	13.690	753571000	0	0	0	0	[Snapshot] (176.9 GB)	[Groupcat] (1.2 MB)
3	40.64	0.066	13.686	753571000	0	0	0	0	[Snapshot] (176.9 GB)	[Groupcat] (1.2 MB)
4	38.71	0.071	13.681	753571000	0	0	0	0	[Snapshot] (176.9 GB)	[Groupcat] (1.2 MB)
5	36.87	0.076	13.676	753571000	0	0	0	0	[Snapshot] (176.9 GB)	[Groupcat] (1.2 MB)
6	35.12	0.082	13.670	753571000	0	0	0	0	[Snapshot] (176.9 GB)	[Groupcat] (1.2 MB)
7	33.61	0.087	13.665	753571000	0	0	0	0	[Snapshot] (176.9 GB)	[Groupcat] (1.2 MB)
8	32.01	0.094	13.658	753571000	0	0	0	0	[Snapshot] (176.9 GB)	[Groupcat] (1.2 MB)
9	30.48	0.100	13.651	753571000	0	0	0	0	[Snapshot] (176.9 GB)	[Groupcat] (1.2 MB)
10	29.03	0.108	13.644	753571000	0	0	0	0	[Snapshot] (176.9 GB)	[Groupcat] (1.2 MB)
11	27.64	0.116	13.636	753571000	0	0	0	0	[Snapshot] (176.9 GB)	[Groupcat] (1.2 MB)
12	26.44	0.123	13.628	753571000	0	0	0	0	[Snapshot] (176.9 GB)	[Groupcat] (1.2 MB)
13	25.17	0.132	13.619	753571000	0	0	0	0	[Snapshot] (176.9 GB)	[Groupcat] (1.2 MB)
14	23.96	0.142	13.609	753571000	0	0	0	0	[Snapshot] (176.9 GB)	[Groupcat] (1.2 MB)
15	22.81	0.153	13.599	753571000	0	0	0	0	[Snapshot] (176.9 GB)	[Groupcat] (1.2 MB)
16	21.81	0.163	13.589	753571000	0	0	0	0	[Snapshot] (176.9 GB)	[Groupcat] (1.2 MB)
17	20.76	0.175	13.577	753571000	0	0	0	0	[Snapshot] (176.9 GB)	[Groupcat] (1.2 MB)
18	19.75	0.188	13.564	753570999	1	0	1	1	[Snapshot] (176.9 GB)	[Groupcat] (1.2 MB)
19	18.79	0.201	13.550	753570998	8	0	2	2	[Snapshot] (176.9 GB)	[Groupcat] (1.2 MB)
20	17.96	0.215	13.537	753571005	10	0	12	12	[Snapshot] (176.9 GB)	[Groupcat] (1.2 MB)
21	17.09	0.231	13.521	753570988	57	0	45	45	[Snapshot] (176.9 GB)	[Groupcat] (1.3 MB)
22	16.25	0.248	13.504	753571068	129	0	125	125	[Snapshot] (176.9 GB)	[Groupcat] (1.5 MB)
23	15.45	0.266	13.486	753571270	386	0	345	344	[Snapshot] (176.9 GB)	[Groupcat] (2.1 MB)
24	14.76	0.283	13.468	753571771	749	0	782	784	[Snapshot] (176.9 GB)	[Groupcat] (3.2 MB)
25	14.03	0.304	13.447	753572960	1719	0	1761	1765	[Snapshot] (176.9 GB)	[Groupcat] (5.7 MB)
26	13.34	0.327	13.425	753575234	3634	0	3689	3711	[Snapshot] (176.9 GB)	[Groupcat] (10.5 MB)
27	12.67	0.351	13.401	753579407	6817	0	6980	7010	[Snapshot] (176.9 GB)	[Groupcat] (14.1 MB)
28	12.04	0.376	13.375	753584669	13111	0	12584	12648	[Snapshot] (176.9 GB)	[Groupcat] (18.9 MB)
29	11.50	0.401	13.350	753590752	21466	0	20390	20489	[Snapshot] (176.9 GB)	[Groupcat] (26.0 MB)
30	10.92	0.431	13.321	753597653	36587	0	33296	33501	[Snapshot] (176.9 GB)	[Groupcat] (37.0 MB)
31	10.37	0.463	13.289	753597727	59678	1	51405	51770	[Snapshot] (176.9 GB)	[Groupcat] (52.8 MB)
32	10.00	0.486	13.265	753588417	83974	9	67834	68323	[Snapshot] (176.9 GB)	[Groupcat] (66.7 MB)
33	9.84	0.497	13.255	753580798	95100	9	76003	76570	[Snapshot] (176.9 GB)	[Groupcat] (73.8 MB)
34	9.39	0.529	13.222	753538618	139682	15	104389	105056	[Snapshot] (176.9 GB)	[Groupcat] (98.1 MB)
35	9.00	0.560	13.191	753465480	194483	43	134799	135770	[Snapshot] (176.9 GB)	[Groupcat] (124.1 MB)
36	8.91	0.568	13.183	753438815	209954	43	143082	144267	[Snapshot] (176.9 GB)	[Groupcat] (131.3 MB)
37	8.45	0.610	13.141	753256794	309020	99	189739	190956	[Snapshot] (176.9 GB)	[Groupcat] (171.2 MB)
38	8.01	0.655	13.096	752961804	430823	148	243828	245554	[Snapshot] (176.8 GB)	[Groupcat] (217.7 MB)
39	7.60	0.703	13.048	752507670	597245	294	305537	307293	[Snapshot] (176.8 GB)	[Groupcat] (270.5 MB)
40	7.24	0.750	13.002	751932502	777615	423	366089	368526	[Snapshot] (176.8 GB)	[Groupcat] (322.6 MB)
41	7.01	0.782	12.969	751446238	920443	562	408462	411199	[Snapshot] (176.7 GB)	[Groupcat] (359.0 MB)
42	6.86	0.805	12.947	751083400	1025835	729	437446	440331	[Snapshot] (176.7 GB)	[Groupcat] (383.9 MB)
43	6.49	0.864	12.888	749952657	1332074	1218	513037	516254	[Snapshot] (176.6 GB)	[Groupcat] (448.7 MB)
44	6.14	0.927	12.824	748701499	1697298	1545	589737	593837	[Snapshot] (176.5 GB)	[Groupcat] (514.7 MB)
45	6.01	0.954	12.797	748041514	1856711	1914	620276	624846	[Snapshot] (176.4 GB)	[Groupcat] (541.1 MB)
46	5.85	0.989	12.763	747343089	2037930	2347	656741	648613	[Snapshot] (176.3 GB)	[Groupcat] (564.6 MB)
47	5.53	1.061	12.690	746241977	2352300	2773	724258	713987	[Snapshot] (176.2 GB)	[Groupcat] (621.0 MB)
48	5.23	1.139	12.613	745013673	2767220	3879	785075	774403	[Snapshot] (176.1 GB)	[Groupcat] (672.8 MB)
49	5.00	1.205	12.546	743836839	3156962	4516	827647	818315	[Snapshot] (176.0 GB)	[Groupcat] (709.9 MB)
50	4.94	1.223	12.529	743506968	3267596	4504	838275	827809	[Snapshot] (176.0 GB)	[Groupcat] (718.3 MB)
51	4.66	1.312	12.439	741766317	3917496	6044	882779	869708	[Snapshot] (175.9 GB)	[Groupcat] (754.8 MB)
52	4.43	1.399	12.353	740243592	4415699	6786	914420	898349	[Snapshot] (175.7 GB)	[Groupcat] (780.0 MB)
53	4.18	1.501	12.251	738495487	5001058	8566	943104	921559	[Snapshot] (175.6 GB)	[Groupcat] (801.2 MB)
54	4.01	1.577	12.175	737212065	5462796	9485	956184	931846	[Snapshot] (175.5 GB)	[Groupcat] (810.7 MB)
55	3.94	1.611	12.141	736637269	5702700	10471	962242	934706	[Snapshot] (175.4 GB)	[Groupcat] (814.0 MB)
56	3.71	1.728	12.023	734723107	6416578	11472	973456	941528	[Snapshot] (175.3 GB)	[Groupcat] (820.9 MB)
57	3.49	1.855	11.897	732693190	7261146	13525	978848	941446	[Snapshot] (175.1 GB)	[Groupcat] (822.2 MB)
58	3.28	1.990	11.762	730581249	8219896	14427	978838	937966	[Snapshot] (175.0 GB)	[Groupcat] (820.1 MB)
59	3.08	2.134	11.617	728498904	9209559	16559	974761	932119	[Snapshot] (174.9 GB)	[Groupcat] (815.6 MB)
60	3.01	2.195	11.556	727639976	9675498	17710	971718	928997	[Snapshot] (174.8 GB)	[Groupcat] (812.9 MB)
61	2.90	2.289	11.462	726372755	10357019	18782	967035	925063	[Snapshot] (174.7 GB)	[Groupcat] (809.4 MB)
62	2.73	2.438	11.313	724884101	11467558	19559	958979	918410	[Snapshot] (174.7 GB)	[Groupcat] (803.3 MB)
63	2.58	2.596	11.155	722917957	12695919	21743	948871	911184	[Snapshot] (174.6 GB)	[Groupcat] (796.4 MB)
64	2.44	2.745	11.006	721216114	13792320	22469	940344	904878	[Snapshot] (174.5 GB)	[Groupcat] (790.5 MB)
65	2.32	2.902	10.849	719436418	15001100	23188	931670	899304	[Snapshot] (174.4 GB)	[Groupcat] (784.9 MB)
66	2.21	3.047	10.705	717909472	16147125	23942	924229	893267	[Snapshot] (174.4 GB)	[Groupcat] (779.4 MB)
67	2.10	3.198	10.554	716371835	17341033	24739	917060	888195	[Snapshot] (174.4 GB)	[Groupcat] (774.6 MB)
68	2.00	3.356	10.396	714758337	18621354	25394	909095	882342	[Snapshot] (174.3 GB)	[Groupcat] (769.0 MB)
69	1.90	3.522	10.230	713213403	19861841	27128	902006	875729	[Snapshot] (174.3 GB)	[Groupcat] (763.3 MB)
70	1.82	3.669	10.082	711850322	20971030	27699	897803	870913	[Snapshot] (174.2 GB)	[Groupcat] (759.3 MB)
71	1.74	3.823	9.928	710518929	22074645	28325	892704	865464	[Snapshot] (174.2 GB)	[Groupcat] (754.7 MB)
72	1.67	3.983	9.769	709153268	23199213	27779	888389	860436	[Snapshot] (174.2 GB)	[Groupcat] (750.6 MB)
73	1.60	4.120	9.631	708055554	24106206	28435	885771	856696	[Snapshot] (174.2 GB)	[Groupcat] (747.7 MB)
74	1.53	4.291	9.460	706661007	25305438	28935	880468	851213	[Snapshot] (174.1 GB)	[Groupcat] (743.1 MB)
75	1.47	4.438	9.313	705522928	26312542	29482	875416	845985	[Snapshot] (174.1 GB)	[Groupcat] (738.7 MB)
76	1.41	4.590	9.161	704380808	27343322	29932	871297	840913	[Snapshot] (174.1 GB)	[Groupcat] (734.6 MB)
77	1.36	4.747	9.005	703273939	28393952	30414	868480	836057	[Snapshot] (174.1 GB)	[Groupcat] (730.9 MB)
78	1.30	4.908	8.844	702146848	29424419	29902	865289	831829	[Snapshot] (174.1 GB)	[Groupcat] (727.6 MB)
79	1.25	5.074	8.678	701041530	30445801	30334	861335	826680	[Snapshot] (174.1 GB)	[Groupcat] (723.5 MB)
80	1.21	5.210	8.542	700143546	31276367	30850	858968	822684	[Snapshot] (174.1 GB)	[Groupcat] (720.5 MB)
81	1.15	5.384	8.367	699012084	32354506	31270	855393	817377	[Snapshot] (174.1 GB)	[Groupcat] (716.4 MB)
82	1.11	5.527	8.224	698139698	33171709	30852	853278	813462	[Snapshot] (174.0 GB)	[Groupcat] (713.5 MB)
83	1.07	5.674	8.078	697269597	33990600	31345	851054	810041	[Snapshot] (174.0 GB)	[Groupcat] (710.9 MB)
84	1.04	5.824	7.928	696384787	34861246	31814	849571	806523	[Snapshot] (174.0 GB)	[Groupcat] (708.4 MB)
85	1.00	5.977	7.775	695559408	35651945	31383	846226	802180	[Snapshot] (174.0 GB)	[Groupcat] (704.9 MB)
86	0.99	6.015	7.736	695333979	35880986	31288	846107	801270	[Snapshot] (174.0 GB)	[Groupcat] (704.3 MB)
87	0.95	6.172	7.579	694488354	36694417	31661	844915	797871	[Snapshot] (174.0 GB)	[Groupcat] (702.0 MB)
88	0.92	6.292	7.459	693797772	37363907	32243	843626	795123	[Snapshot] (174.0 GB)	[Groupcat] (700.0 MB)
89	0.89	6.455	7.296	692997152	38140909	31814	842231	791151	[Snapshot] (174.0 GB)	[Groupcat] (697.3 MB)
90	0.85	6.622	7.130	692104413	38995386	32199	840581	787404	[Snapshot] (174.0 GB)	[Groupcat] (694.6 MB)
91	0.82	6.791	6.960	691263502	39848257	31815	840242	783130	[Snapshot] (174.0 GB)	[Groupcat] (691.9 MB)
92	0.79	6.921	6.831	690661313	40424366	32201	838801	780487	[Snapshot] (174.0 GB)	[Groupcat] (690.0 MB)
93	0.76	7.096	6.656	689835537	41282942	32590	838863	776985	[Snapshot] (174.0 GB)	[Groupcat] (687.9 MB)
94	0.73	7.230	6.522	689277359	41848707	32268	838511	774194	[Snapshot] (174.0 GB)	[Groupcat] (686.1 MB)
95	0.70	7.411	6.340	688421414	42708594	32597	838910	770835	[Snapshot] (174.0 GB)	[Groupcat] (684.2 MB)
96	0.68	7.550	6.202	687862849	43287956	32275	839695	767799	[Snapshot] (174.0 GB)	[Groupcat] (682.5 MB)
97	0.64	7.737	6.015	687076812	44076657	32615	840216	763910	[Snapshot] (174.0 GB)	[Groupcat] (680.3 MB)
98	0.62	7.880	5.872	686517267	44667578	32284	840761	761708	[Snapshot] (174.0 GB)	[Groupcat] (679.1 MB)
99	0.60	8.024	5.727	685988488	45236503	32742	841789	759350	[Snapshot] (174.0 GB)	[Groupcat] (678.0 MB)
100	0.58	8.171	5.581	685497149	45800667	32401	841639	756581	[Snapshot] (174.0 GB)	[Groupcat] (676.2 MB)
101	0.55	8.369	5.383	684770167	46536403	32719	842387	752896	[Snapshot] (174.0 GB)	[Groupcat] (674.2 MB)
102	0.52	8.520	5.232	684218372	47113780	32368	843620	750742	[Snapshot] (174.1 GB)	[Groupcat] (673.2 MB)
103	0.50	8.672	5.079	683704397	47631103	32748	844141	748044	[Snapshot] (174.1 GB)	[Groupcat] (671.7 MB)
104	0.48	8.827	4.925	683200987	48172911	32475	845194	745530	[Snapshot] (174.1 GB)	[Groupcat] (670.5 MB)
105	0.46	8.983	4.769	682679652	48699740	32818	847430	743368	[Snapshot] (174.1 GB)	[Groupcat] (669.7 MB)
106	0.44	9.141	4.610	682188249	49232362	32523	849348	740664	[Snapshot] (174.1 GB)	[Groupcat] (668.6 MB)
107	0.42	9.301	4.451	681684200	49736103	32798	851085	738108	[Snapshot] (174.1 GB)	[Groupcat] (667.5 MB)
108	0.40	9.463	4.289	681214595	50231638	32522	852174	735441	[Snapshot] (174.1 GB)	[Groupcat] (666.1 MB)
109	0.38	9.626	4.125	680714979	50728641	32854	854855	732850	[Snapshot] (174.1 GB)	[Groupcat] (665.2 MB)
110	0.36	9.791	3.960	680287086	51196534	32524	857603	730475	[Snapshot] (174.1 GB)	[Groupcat] (664.5 MB)
111	0.35	9.902	3.849	679948077	51540768	32925	859514	729223	[Snapshot] (174.1 GB)	[Groupcat] (664.2 MB)
112	0.33	10.070	3.681	679532411	51975962	32605	862896	726765	[Snapshot] (174.1 GB)	[Groupcat] (663.5 MB)
113	0.31	10.240	3.511	679060540	52465968	32912	865128	724371	[Snapshot] (174.1 GB)	[Groupcat] (662.7 MB)
114	0.29	10.411	3.340	678669016	52874518	32602	867341	722242	[Snapshot] (174.1 GB)	[Groupcat] (661.9 MB)
115	0.27	10.585	3.167	678221223	53338375	32351	868934	720019	[Snapshot] (174.1 GB)	[Groupcat] (660.9 MB)
116	0.26	10.701	3.051	677943155	53616830	32703	869459	718881	[Snapshot] (174.1 GB)	[Groupcat] (660.4 MB)
117	0.24	10.876	2.875	677529545	54055298	32411	871117	717072	[Snapshot] (174.1 GB)	[Groupcat] (659.7 MB)
118	0.23	11.054	2.698	677115889	54481287	32721	871184	714698	[Snapshot] (174.1 GB)	[Groupcat] (658.3 MB)
119	0.21	11.173	2.579	676869623	54748077	32489	871856	713737	[Snapshot] (174.1 GB)	[Groupcat] (657.9 MB)
120	0.20	11.353	2.399	676434853	55194713	32806	873711	711741	[Snapshot] (174.1 GB)	[Groupcat] (657.1 MB)
121	0.18	11.534	2.218	676100823	55559645	32554	875089	709656	[Snapshot] (174.1 GB)	[Groupcat] (656.2 MB)
122	0.17	11.656	2.096	675836579	55829788	32353	876272	708496	[Snapshot] (174.1 GB)	[Groupcat] (655.8 MB)
123	0.15	11.839	1.912	675467244	56212796	32666	878035	706507	[Snapshot] (174.1 GB)	[Groupcat] (655.0 MB)
124	0.14	11.963	1.789	675225856	56465246	32447	879073	705348	[Snapshot] (174.1 GB)	[Groupcat] (654.6 MB)
125	0.13	12.149	1.603	674854540	56859430	32720	882625	703746	[Snapshot] (174.1 GB)	[Groupcat] (654.5 MB)
126	0.11	12.336	1.415	674546023	57196025	32420	885497	702315	[Snapshot] (174.1 GB)	[Groupcat] (654.3 MB)
127	0.10	12.462	1.289	674309770	57443690	32272	886903	700624	[Snapshot] (174.1 GB)	[Groupcat] (653.7 MB)
128	0.08	12.652	1.100	673977846	57795659	32455	889498	698846	[Snapshot] (174.1 GB)	[Groupcat] (653.2 MB)
129	0.07	12.779	0.972	673757203	58033154	32283	892036	697896	[Snapshot] (174.1 GB)	[Groupcat] (653.3 MB)
130	0.06	12.971	0.780	673417436	58382714	32548	895541	696187	[Snapshot] (174.1 GB)	[Groupcat] (653.1 MB)
131	0.05	13.100	0.652	673229328	58595881	32363	897531	694995	[Snapshot] (174.1 GB)	[Groupcat] (652.9 MB)
132	0.03	13.294	0.458	672885800	58955279	32590	900158	693514	[Snapshot] (174.1 GB)	[Groupcat] (652.6 MB)
133	0.02	13.424	0.327	672696049	59159895	32438	902427	692159	[Snapshot] (174.1 GB)	[Groupcat] (652.4 MB)
134	0.01	13.620	0.131	672382479	59491493	32141	903591	690851	[Snapshot] (174.1 GB)	[Groupcat] (651.9 MB)
135	0.00	13.752	0.000	672164948	59714583	32451	904903	689785	[Snapshot] (174.1 GB)	[Groupcat] (651.6 MB)

Initial Conditions:

Illustris-2 has its initial conditions available.

•   Download Initial Conditions (22.5 GB in one HDF5 file)

simulation.hdf5 file:

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

•   Download simulation.hdf5 File (474.4 MB)

Merger Trees:

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

•   Download SubLink Tree (33.8 GB across 43 files)

Illustris-2 has the LHaloTree merger trees available: they contain the progenitor/descendant connectivity, and the most important Subhalo properties.

•   Download LHaloTree (25.6 GB across 256 files)

Supplementary Data Catalogs:

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

• Coverage: all relevant snapshots (13 through 135 for circularities and momenta, 38 through 135 for axis ratios). All subhalos with $M_\star > 10^9 M_\odot$ within $2 R_{1/2,\star}$.
•   Download Stellar Circularities, Angular Momenta, and Axis Ratios (~100 MB in 1 file)

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

• Coverage: All snapshots, all subhalos (those without a match have an index value of -1).
•   Download Subhalo Matching To Dark (289 MB across 1 file)

Illustris-2 has the Blackhole Mergers catalog available.

• Coverage: All blackholes in simulation.
•   Download Blackhole Mergers (3.3 MB across 1 file)

Illustris-2 has the Blackhole Details catalog available.

• Coverage: All blackholes in simulation.
•   Download Blackhole Details (1.2 GB across 1 file)

Illustris-2 has the Stellar Assembly catalog available.

• Coverage: All Subfind subhalos (galaxies) at all snapshots.
•   Download Stellar Assembly (4.3 GB in 1 file)

Illustris-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)