Welcome to the MPA Numerical Cosmology Data Archive!

The data listed below are currently available.
They can be down-loaded via internet from this page.
Other data of larger size can be purchased in the format of magnetic tapes
from the Hubble Volume Project page at MPA.
Simple reading programmes are provided together with downloaded data, except for those in trivial formatted text style.

List of the available data

Full Millennium semi-analytic catalogue at all redshifts

• Full semi-analytic catalogue of the Millennium simulation together with the complete dark matter merging history trees, publicly available in the form of a VO-oriented and SQL-queryable database for studying the evolution of galaxies in the LCDM cosmogony

N-body simulation outputs of the VIRGO Consortium

• Original VIRGO N-body simulations

GIF2 simulation outputs

• 400³ particle in (110 Mpc/h)³ box simulations

Larger box simulation outputs

• 512³ particle simulations

Higher resolution simulations in smaller boxes (GIF)

• Dark Matter simulations in smaller boxes

Outputs from the GIF project

• Galaxy catalogues
• Galaxy catalogues for SDSS
• halo catalogues
• Dark matter halo merging trees

Outputs from the constrained simulations of the Local Universe

• Snapshot data
• Galaxy catalogues
• halo catalogues
• Mark III and mock Mark III catalogues

Outputs from the Hubble Volume project

• Snapshot data
• Lightcone outputs
• Cluster catalogues

The abbreviation and notation used in the list

Cosmological Models

• SCDM : Standard CDM
• tCDM : tau CDM
• LCDM : CDM with a cosmological constant (lambda)
• OCDM : Open CDM

Parameters

• Omega0, lambda, Sigma_8 : Standard notation.
• h : The Hubble constant expressed as H0=100 h km/sec/Mpc.
• Gamma : Shape parameter of the CDM power spectrum.
• Npar : Number of particles used in the simulations.
• L : One side length of the simulation box
• m_p : Mass per one particle in the simulation
• l_soft : Gravitational softening length

Virgo simulations (Visit project page)

Simulation parameters

Model	Omega0	lambda	h	Gamma	Sigma8	Npar	L (Mpc/h)	mp (Msun/h)	l_soft (Kpc/h)
SCDM	1.0	0.0	0.5	0.50	0.51	2563	239.5	2.27 x 1011	36
tCDM	1.0	0.0	0.5	0.21	0.51	2563	239.5	2.27 x 1011	36
LCDM	0.3	0.7	0.7	0.21	0.90	2563	239.5	6.86 x 1010	25
OCDM	0.3	0.0	0.7	0.21	0.85	2563	239.5	6.86 x 1010	30

Available data

Snaphot outputs at 10 different redshifts for all the 4 models.
The size of one compressed data file is approximately 210MB

Select cosmological model and redshift

SCDM tCDM LCDM OCDM z=10 z=5 z=3 z=2 z=1.5 z=1.0 z=0.5 z=0.3 z=0.1 z=0

Credit: An example of proper credit for these Virgo data.

Large box simulations (Visit project page)

Simulation parameters

Model	Omega0	lambda	h	Gamma	Sigma8	Npar	L (Mpc/h)	mp (Msun/h)	l_soft (Kpc/h)
tCDM	1.0	0.0	0.5	0.21	0.51	5123	320.6	6.86 x 1010	30
LCDM	0.3	0.7	0.7	0.21	0.90	5123	479.0	6.86 x 1010	30

Available data

Snaphot outputs at 6 different redshifts for the 2 models.
The size of one compressed data file is approximately 150MB-190MB. A single snapshot output consists of 8 files for particles positions and 8 files for velocities. The tCDM model data are available only on tapes for ordering.

Select cosmological model and redshift

-- AND   download --

LCDM z=5 z=3 z=2 z=1 z=0.5 z=0

-- OR   order --

LCDM tCDM z=5 z=3 z=2 z=1 z=0.5 z=0

Credit: An example of proper credit for these Virgo data.

GIF2 simulation

Simulation parameters

Model	Omega0	lambda	h	Sigma8	Npar	L (Mpc/h)	mp (Msun/h)	l_soft (Kpc/h)
LCDM	0.3	0.7	0.7	0.90	4003	110.0	1.73 x 109	6.6

Snaphot outputs at 7 different redshifts
There are 32 files for each snapshot, each single file is approximately ~60MB.

LCDM z=8 z=5 z=3 z=2 z=1 z=0.5 z=0

Credit: An example of proper credit for these Virgo data.

Higher resolution simulations in smaller boxes (Visit project page)

(These simulations were used to produce the galaxy catalogues of the GIF project)

Simulation parameters


Model	Omega0	lambda	h	Gamma	Sigma8	Npar	L (Mpc/h)	mp (Msun/h)	l_soft (Kpc/h)
SCDM	1.0	0.0	0.5	0.50	0.6	2563	84.5	1.0 x 1010	36
tCDM	1.0	0.0	0.5	0.21	0.6	2563	84.5	1.0 x 1010	36
LCDM	0.3	0.7	0.7	0.21	0.90	2563	141.3	1.4 x 1010	20
OCDM	0.3	0.0	0.7	0.21	0.85	2563	141.3	1.4 x 1010	30


Available data


Snaphot outputs at 10 different redshifts for all the 4 models.
For the LCDM model additional outputs are available so that the output redshifts match those of the galaxy catalogues created by the GIF project.
The size of one compressed data file is approximately 210MB.


Select cosmological model and redshift

SCDM tCDM OCDM z=10 z=5 z=3 z=2 z=1.5 z=1 z=0.5 z=0.3 z=0.1 z=0

LCDM z=10 z=5 z=3 z=2.12 z=2 z=1.5 z=1 z=0.82 z=0.62 z=0.5 z=0.42 z=0.35 z=0.3 z=0.2 z=0.1 z=0.06 z=0

Galaxy and dark matter halo catalogues from the GIF project

Galaxy catalogues DESCRIPTION

Select cosmological model and redshift
tar.gz file of size approximately 1MB for each redshift
(tCDM model not yet available)

LCDM z=0 z=0.20 z=0.42 z=0.62 z=0.82 z=1.05 z=1.46 z=2.12 z=2.97

Galaxy catalogues for SDSS DESCRIPTION

Select cosmological model and redshift
tar.gz file of size approximately 20MB for each redshift
(tCDM model not yet available)

LCDM z=0.00 z=0.06 z=0.13 z=0.20 z=0.27 z=0.35 z=0.42 z=0.52

Halo catalogues DESCRIPTION

Select cosmological model
Single tar.gz file of size 47MB
(tCDM model not yet available)

LCDM

Halo merging trees DESCRIPTION

Select cosmological model
Single tar.gz file of size 33MB
(tCDM model not yet available)

LCDM

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Last modified: Mon Oct 30 11:39:39 CET 2006 by Virgo Administrator