IllustrisTNG - TNG50-4 Data Downloads

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Simulation Details:

Parameter Description	Value
simulation name	TNG50-4
alternative simulation name	L35n270TNG
short description of run	Lowest resolution (level 4) 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)	0.00293826048
dark matter particle mass [10^10 msun/h]	0.015737226681675
number of dark matter particles	19683000
number of gas tracer particles	19683000
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 models	Fiducial 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 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:

TNG50-4 has [100] snapshots available, with 261.3 GB total data volume.

Over all snapshots, have 2,364,370 FoF groups, 2,210,406 Subfind groups, and 3,900,692,332 particles.

Snapshot [#]	Redshift	Age [Gyr]	Lookback [Gyr]	Gas Cells [#]	Stars [#]	BHs [#]	FoF Groups [#]	Subfind Groups [#]	Download Snapshot	Download FoF & Subfind
0	20.05	0.179	13.624	19683000	0	0	0	0	[Snapshot] (1.9 GB)	[Groupcat] (282.0 KB)
1	14.99	0.271	13.532	19683000	0	0	0	0	[Snapshot] (1.9 GB)	[Groupcat] (282.0 KB)
2	11.98	0.370	13.433	19682983	14	0	46	46	[Snapshot] (5.3 GB)	[Groupcat] (377.9 KB)
3	10.98	0.418	13.385	19682878	58	0	169	172	[Snapshot] (5.3 GB)	[Groupcat] (661.4 KB)
4	10.00	0.475	13.328	19682387	188	2	499	504	[Snapshot] (5.3 GB)	[Groupcat] (1.0 MB)
5	9.39	0.517	13.286	19681543	450	3	849	858	[Snapshot] (1.9 GB)	[Groupcat] (1.3 MB)
6	9.00	0.547	13.256	19680676	691	9	1222	1230	[Snapshot] (5.3 GB)	[Groupcat] (1.7 MB)
7	8.45	0.596	13.207	19678383	1322	15	1906	1915	[Snapshot] (1.9 GB)	[Groupcat] (2.2 MB)
8	8.01	0.640	13.163	19675401	2018	19	2650	2677	[Snapshot] (5.3 GB)	[Groupcat] (2.9 MB)
9	7.60	0.687	13.116	19671050	3025	38	3634	3647	[Snapshot] (1.9 GB)	[Groupcat] (3.8 MB)
10	7.24	0.732	13.071	19665598	4093	48	4747	4724	[Snapshot] (1.9 GB)	[Groupcat] (4.7 MB)
11	7.01	0.764	13.039	19660989	5142	63	5569	5562	[Snapshot] (5.3 GB)	[Groupcat] (5.4 MB)
12	6.49	0.844	12.959	19646552	7515	133	7747	7756	[Snapshot] (1.9 GB)	[Groupcat] (7.3 MB)
13	6.01	0.932	12.871	19625956	11020	202	10171	10144	[Snapshot] (5.3 GB)	[Groupcat] (9.4 MB)
14	5.85	0.965	12.838	19617473	11887	263	11049	10994	[Snapshot] (1.9 GB)	[Groupcat] (10.1 MB)
15	5.53	1.036	12.767	19597978	15254	325	13042	12935	[Snapshot] (1.9 GB)	[Groupcat] (11.8 MB)
16	5.23	1.112	12.691	19574534	18700	472	14995	14810	[Snapshot] (1.9 GB)	[Groupcat] (13.4 MB)
17	5.00	1.177	12.626	19552476	22365	545	16549	16260	[Snapshot] (5.3 GB)	[Groupcat] (14.7 MB)
18	4.66	1.282	12.521	19516772	28611	713	18949	18666	[Snapshot] (1.9 GB)	[Groupcat] (16.8 MB)
19	4.43	1.366	12.437	19486578	34199	788	20513	20186	[Snapshot] (1.9 GB)	[Groupcat] (18.1 MB)
20	4.18	1.466	12.337	19451084	41105	1019	22303	21866	[Snapshot] (1.9 GB)	[Groupcat] (19.6 MB)
21	4.01	1.540	12.263	19424219	46338	1124	23436	23023	[Snapshot] (5.2 GB)	[Groupcat] (20.6 MB)
22	3.71	1.689	12.115	19375190	57878	1332	25316	24844	[Snapshot] (1.9 GB)	[Groupcat] (22.2 MB)
23	3.49	1.812	11.991	19338512	67656	1589	26718	26127	[Snapshot] (1.9 GB)	[Groupcat] (23.3 MB)
24	3.28	1.944	11.859	19300783	78360	1706	28024	27173	[Snapshot] (1.9 GB)	[Groupcat] (24.3 MB)
25	3.01	2.145	11.658	19250411	96916	2082	29158	28329	[Snapshot] (5.2 GB)	[Groupcat] (25.3 MB)
26	2.90	2.238	11.565	19229556	105651	2193	29546	28594	[Snapshot] (1.9 GB)	[Groupcat] (25.6 MB)
27	2.73	2.384	11.419	19201188	119174	2255	30049	29129	[Snapshot] (1.9 GB)	[Groupcat] (26.0 MB)
28	2.58	2.539	11.264	19171727	133752	2501	30367	29389	[Snapshot] (1.9 GB)	[Groupcat] (26.3 MB)
29	2.44	2.685	11.118	19147729	146868	2587	30929	29675	[Snapshot] (1.9 GB)	[Groupcat] (26.6 MB)
30	2.32	2.839	10.964	19124236	161401	2673	30975	29686	[Snapshot] (1.9 GB)	[Groupcat] (26.6 MB)
31	2.21	2.981	10.823	19105511	173808	2763	31160	29720	[Snapshot] (1.9 GB)	[Groupcat] (26.6 MB)
32	2.10	3.129	10.674	19087072	187388	2816	31145	29706	[Snapshot] (1.9 GB)	[Groupcat] (26.6 MB)
33	2.00	3.285	10.519	19069124	202778	2893	31122	29611	[Snapshot] (5.2 GB)	[Groupcat] (26.6 MB)
34	1.90	3.447	10.356	19049618	218266	3096	31008	29558	[Snapshot] (1.9 GB)	[Groupcat] (26.5 MB)
35	1.82	3.593	10.210	19035804	231075	3160	30731	29324	[Snapshot] (1.9 GB)	[Groupcat] (26.3 MB)
36	1.74	3.744	10.059	19020657	244814	3220	30753	29288	[Snapshot] (1.9 GB)	[Groupcat] (26.3 MB)
37	1.67	3.902	9.901	19006935	257694	3148	30603	29117	[Snapshot] (1.9 GB)	[Groupcat] (26.1 MB)
38	1.60	4.038	9.766	18995630	268000	3214	30584	29101	[Snapshot] (1.9 GB)	[Groupcat] (26.1 MB)
39	1.53	4.206	9.597	18982838	280275	3281	30406	28800	[Snapshot] (1.9 GB)	[Groupcat] (25.9 MB)
40	1.50	4.293	9.510	18976466	286514	3359	30301	28700	[Snapshot] (5.2 GB)	[Groupcat] (25.8 MB)
41	1.41	4.502	9.301	18960312	302099	3413	30195	28498	[Snapshot] (1.9 GB)	[Groupcat] (25.6 MB)
42	1.36	4.657	9.147	18946824	313438	3454	30078	28404	[Snapshot] (1.9 GB)	[Groupcat] (25.6 MB)
43	1.30	4.816	8.987	18934835	324549	3387	29905	28279	[Snapshot] (1.9 GB)	[Groupcat] (25.4 MB)
44	1.25	4.980	8.823	18923698	335348	3437	29792	28076	[Snapshot] (1.9 GB)	[Groupcat] (25.3 MB)
45	1.21	5.115	8.688	18914175	343736	3476	29583	27929	[Snapshot] (1.9 GB)	[Groupcat] (25.1 MB)
46	1.15	5.289	8.514	18903554	353851	3515	29666	27727	[Snapshot] (1.9 GB)	[Groupcat] (25.0 MB)
47	1.11	5.431	8.372	18893412	362402	3454	29641	27609	[Snapshot] (1.9 GB)	[Groupcat] (24.9 MB)
48	1.07	5.577	8.226	18884457	370182	3519	29556	27521	[Snapshot] (1.9 GB)	[Groupcat] (24.9 MB)
49	1.04	5.726	8.077	18875832	378312	3577	29459	27364	[Snapshot] (1.9 GB)	[Groupcat] (24.8 MB)
50	1.00	5.878	7.925	18866060	386796	3514	29104	27117	[Snapshot] (5.2 GB)	[Groupcat] (24.5 MB)
51	0.95	6.073	7.730	18853812	397698	3552	28918	26906	[Snapshot] (1.9 GB)	[Groupcat] (24.3 MB)
52	0.92	6.193	7.610	18846698	404191	3615	28668	26796	[Snapshot] (1.9 GB)	[Groupcat] (24.2 MB)
53	0.89	6.356	7.447	18837671	411965	3548	28432	26690	[Snapshot] (1.9 GB)	[Groupcat] (24.1 MB)
54	0.85	6.522	7.281	18829283	419588	3587	28473	26520	[Snapshot] (1.9 GB)	[Groupcat] (24.0 MB)
55	0.82	6.692	7.111	18819324	427363	3511	28540	26462	[Snapshot] (1.9 GB)	[Groupcat] (24.0 MB)
56	0.79	6.822	6.981	18811928	433075	3554	28271	26353	[Snapshot] (1.9 GB)	[Groupcat] (23.8 MB)
57	0.76	6.998	6.805	18802262	440431	3604	28508	26360	[Snapshot] (1.9 GB)	[Groupcat] (23.9 MB)
58	0.73	7.132	6.671	18795371	446147	3546	28300	26197	[Snapshot] (1.9 GB)	[Groupcat] (23.7 MB)
59	0.70	7.314	6.489	18786537	453443	3585	28092	26035	[Snapshot] (5.2 GB)	[Groupcat] (23.6 MB)
60	0.68	7.453	6.350	18779321	458984	3535	28040	25944	[Snapshot] (1.9 GB)	[Groupcat] (23.5 MB)
61	0.64	7.642	6.161	18770010	466116	3560	27947	25831	[Snapshot] (1.9 GB)	[Groupcat] (23.4 MB)
62	0.62	7.786	6.017	18762347	471757	3517	27692	25697	[Snapshot] (1.9 GB)	[Groupcat] (23.3 MB)
63	0.60	7.932	5.872	18755736	477140	3576	27762	25677	[Snapshot] (1.9 GB)	[Groupcat] (23.3 MB)
64	0.58	8.079	5.724	18748254	482273	3528	27708	25622	[Snapshot] (1.9 GB)	[Groupcat] (23.2 MB)
65	0.55	8.280	5.523	18738959	488143	3552	27662	25464	[Snapshot] (1.9 GB)	[Groupcat] (23.1 MB)
66	0.52	8.432	5.371	18732143	492769	3517	27465	25256	[Snapshot] (1.9 GB)	[Groupcat] (23.0 MB)
67	0.50	8.587	5.216	18723862	497433	3563	27490	25221	[Snapshot] (5.2 GB)	[Groupcat] (22.9 MB)
68	0.48	8.743	5.060	18717451	502020	3525	27507	25241	[Snapshot] (1.9 GB)	[Groupcat] (23.0 MB)
69	0.46	8.902	4.901	18709675	506578	3567	27547	25157	[Snapshot] (1.9 GB)	[Groupcat] (22.9 MB)
70	0.44	9.062	4.741	18702941	511424	3524	27405	24995	[Snapshot] (1.9 GB)	[Groupcat] (22.8 MB)
71	0.42	9.225	4.578	18695836	516019	3566	27351	24928	[Snapshot] (1.9 GB)	[Groupcat] (22.7 MB)
72	0.40	9.389	4.414	18689318	520439	3512	27153	24827	[Snapshot] (5.2 GB)	[Groupcat] (22.6 MB)
73	0.38	9.556	4.247	18682185	524888	3562	27147	24724	[Snapshot] (1.9 GB)	[Groupcat] (22.5 MB)
74	0.36	9.724	4.079	18675559	529490	3513	27059	24585	[Snapshot] (1.9 GB)	[Groupcat] (22.4 MB)
75	0.35	9.837	3.966	18671240	532418	3571	26802	24518	[Snapshot] (1.9 GB)	[Groupcat] (22.3 MB)
76	0.33	10.009	3.794	18664138	536979	3522	26654	24412	[Snapshot] (1.9 GB)	[Groupcat] (22.2 MB)
77	0.31	10.182	3.621	18656108	541560	3581	26549	24395	[Snapshot] (1.9 GB)	[Groupcat] (22.2 MB)
78	0.30	10.299	3.504	18651682	544436	3539	26508	24314	[Snapshot] (5.2 GB)	[Groupcat] (22.1 MB)
79	0.27	10.535	3.269	18641817	550780	3485	26568	24195	[Snapshot] (1.9 GB)	[Groupcat] (22.1 MB)
80	0.26	10.654	3.149	18636984	553461	3540	26659	24171	[Snapshot] (1.9 GB)	[Groupcat] (22.1 MB)
81	0.24	10.834	2.969	18631047	557097	3499	26280	24097	[Snapshot] (1.9 GB)	[Groupcat] (21.9 MB)
82	0.23	11.016	2.787	18624095	561032	3550	26416	23970	[Snapshot] (1.9 GB)	[Groupcat] (21.9 MB)
83	0.21	11.138	2.665	18619819	563405	3504	26332	23913	[Snapshot] (1.9 GB)	[Groupcat] (21.8 MB)
84	0.20	11.323	2.480	18613753	567048	3544	26116	23852	[Snapshot] (5.2 GB)	[Groupcat] (21.7 MB)
85	0.18	11.509	2.294	18608176	570369	3493	26028	23666	[Snapshot] (1.9 GB)	[Groupcat] (21.6 MB)
86	0.17	11.635	2.169	18603924	572703	3472	26133	23602	[Snapshot] (1.9 GB)	[Groupcat] (21.6 MB)
87	0.15	11.824	1.979	18597698	576136	3510	25720	23537	[Snapshot] (1.9 GB)	[Groupcat] (21.5 MB)
88	0.14	11.951	1.852	18593631	578336	3475	25818	23515	[Snapshot] (1.9 GB)	[Groupcat] (21.5 MB)
89	0.13	12.143	1.660	18587796	581693	3523	25783	23388	[Snapshot] (1.9 GB)	[Groupcat] (21.4 MB)
90	0.11	12.337	1.466	18581656	584717	3469	25840	23319	[Snapshot] (1.9 GB)	[Groupcat] (21.3 MB)
91	0.10	12.467	1.336	18577593	586839	3447	25613	23259	[Snapshot] (5.2 GB)	[Groupcat] (21.3 MB)
92	0.08	12.663	1.140	18571151	589853	3472	25668	23260	[Snapshot] (1.9 GB)	[Groupcat] (21.3 MB)
93	0.07	12.795	1.008	18568045	591731	3445	25676	23178	[Snapshot] (1.9 GB)	[Groupcat] (21.2 MB)
94	0.06	12.993	0.810	18561724	594642	3491	25490	23117	[Snapshot] (1.9 GB)	[Groupcat] (21.1 MB)
95	0.05	13.127	0.676	18557726	596445	3465	25459	23089	[Snapshot] (1.9 GB)	[Groupcat] (21.1 MB)
96	0.03	13.328	0.475	18552501	599184	3500	25267	23021	[Snapshot] (1.9 GB)	[Groupcat] (21.0 MB)
97	0.02	13.463	0.340	18548842	601182	3466	25375	23007	[Snapshot] (1.9 GB)	[Groupcat] (21.0 MB)
98	0.01	13.667	0.136	18543661	604015	3429	25303	22884	[Snapshot] (1.9 GB)	[Groupcat] (20.9 MB)
99	0.00	13.803	0.000	18540104	605779	3486	25257	22869	[Snapshot] (5.2 GB)	[Groupcat] (20.9 MB)

Initial Conditions:

TNG50-4 has its initial conditions available.

Download Initial Conditions (600.7 MB in one HDF5 file)

simulation.hdf5 file:

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

Download simulation.hdf5 File (25.1 MB)

Merger Trees:

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

Download SubLink Tree (2.1 GB across 15 files)

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

Download LHaloTree (1.2 GB across 8 files)

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:

TNG50-4 has the Stellar Circularities, Angular Momenta, and Axis Ratios catalog available.

Coverage: all snapshots. All subhalos with $M_\star > 3.4 \times 10^8 M_\odot$ within $2 R_{1/2,\star}$ and at least 100 stars.
Download Stellar Circularities, Angular Momenta, and Axis Ratios (~100 MB in 1 file)

TNG50-4 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

TNG50-4 has the Blackhole Mergers catalog available.

Coverage: All blackholes in simulation.
Download Blackhole Mergers

TNG50-4 has the Blackhole Details catalog available.

Coverage: All blackholes in simulation.
Download Blackhole Details

TNG50-4 has the Stellar Assembly catalog available.

Coverage: All Subfind subhalos (galaxies) at all snapshots.
Download Stellar Assembly

TNG50-4 has the Subbox Subhalo List catalogs available.

Coverage: All subboxes, based on the redshift zero subhalo population.
Subbox Subhalo List (Subbox #0) (a few GB)
Subbox Subhalo List (Subbox #1) (a few GB)
Subbox Subhalo List (Subbox #2) (a few GB)

TNG50-4 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)

TNG50-4 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)

TNG50-4 has the Merger History catalog available.

Coverage: All snapshots, each in a separate file. All subhalos.
Merger History (~few 100s MB to ~few GB, per snapshot)

Public Data Access Overview / TNG50-4 (Data Downloads)