Note: that everything on this page is intended for public distribution. Anyone is welcome to download, distribute, and share images/videos presented here. For presentation in talks, posters, etc we would anticipate a text credit to "Illustris Collaboration" / "Illustris Simulation". Each image links to a larger version. Some images have additional, particularly large versions available (e.g. for printing).
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Illustris simulation overview poster. Shows the large scale dark matter and gas density fields in projection (top/bottom). The lower three panels show gas temperature, entropy, and velocity at the same scale. Centered on the most massive cluster, for which the circular insets show four predicted observables. The two galaxy insets highlight a central elliptical and a spiral disk satellite (top/bottom).
Stellar light distributions (g,r,i bands) for a sample of galaxies at z = 0 arranged along the classical Hubble sequence for morphological classification. Our simulation produces a variety of galaxy types ranging from ellipticals to disk galaxies to irregular systems, the latter mostly resulting from interactions and mergers.
Hubble eXtreme Deep Field observations (2.8 arcmin on a side) in B, Z, H bands convolved with Gaussian point-spread functions of sigma = 0.04, 0.08, and 0.16 arcsec, respectively. Divided down the middle: real observation (left side) and mock observation from Illustris (right side).
Mock HST eXtreme Deep Field observations of a selection of galaxies in the observed-frame V, Y, H bands, taking into account dust attenuation. The rows show increasing stellar masses from 109 (top) to 1011.5 solar masses (bottom), and the columns show redshifts from z=5 (left) to z=0 (right).
Sample of 41 blue, disk galaxies, showing the stellar light distribution (SDSS g,r,i band composites).
Sample of 41 red, elliptical galaxies, showing the stellar light distribution (SDSS g,r,i band composites).
Dark matter annihilation radiation map of the most massive cluster at z=0, from a region enclosing three times the virial radius. The FoF group of this cluster only has over 65 million DM particles and 16,937 resolved substructures.
Sample of massive galaxies from z=5 (left) to z=0 (right), showing their stellar light distribution (rest-frame B,g,r band composites) and their gas surface densities.
Encoded in H.264 format, available in 1080p widescreen HD (1920x1080), or 1000x1000 for square movies. For higher resolution (4K) please contact us.
Time evolution of a 10Mpc (comoving) region within Illustris from the start of the simulation to z=0. The movie transitions between the dark matter density field, gas temperature (blue: cold, green: warm: white: hot), and gas metallicity.
Continuous zoom-in from the scale of the entire simulation volume (~100 Mpc) to the scale of an individual spiral galaxy (~10 kpc), highlighting the diversity of structure across spatial scale, the large dynamic range of the simulation (106 per dimension), and the relationship between dark matter, gas, and stars.
Time evolution of a 10Mpc (comoving) cubic region within Illustris, rendered from outside. The movies shows on the left the dark matter density field, and on the right the gas temperature (blue: cold, green: warm: white: hot). The rapid temperature fluctuations around massive haloes are due to radiative AGN feedback that is most active during quasar phases. The larger 'explosions' are due to radio-mode feedback.
Time evolution of four separate sub-regions of the Illustris volume, from high redshift to z=0, showing gas temperature. Each region is several Mpc on a side, and each samples a different over-density relative to the cosmic mean, from highly over-dense (top left) to under-dense (counter-clockwise).
Time evolution from high redshift to z=0, demonstrating the formation of a massive elliptical 'red-and-dead' galaxy as a result of a multiple merger around z~1. Panels show stellar light (left) and gas density (right) in a region of 1 Mpc on a side.
Time evolution of a 10Mpc (comoving) over-dense region within Illustris. While the right side shows a full-physics simulation that includes gas cooling, as well as stellar and black hole formation and feedback, the left side shows a simple simulation of the same region, which includes only gravity and hydrodynamics.