Movies and Images

Projections of the gas density (left), temperature (middle) and gas metallicity (right) of the high resolution level 3 simulation of Au 6, at three different redshifts.

Projections of the gas density (left), temperature (middle) and gas metallicity (right) of the high resolution level 3 simulation of Au 6, at three different redshifts.

Magnetic field strength of a spiral galaxy with brush strokes to indicate the direction of the field lines.

Animation of a projected view of a simulated Auriga galaxy that looks particuarly like our Galaxy; there is a bar of stars running through its centre very similar to the Milky Way. Viewed from the side, the simulated galaxy has a prominent X-shape, also called a boxy-peanut bulge. The peanut is made up of stars that get kicked out of the plane of the disc, because their orbits are excited by the rotating bar (much like a child on a swing reaching higher and higher heights if pushed at the right frequency). So, when we look at all the stars in projection, the result is a shape that looks like an X, or a shelled peanut. By the way, we also know that there is a peanut at the heart of our own Milky Way - so X really does mark the spot, or in this case, the centre of our Galaxy.

Movie showing the evolution of one of the simulations from very high redshift to present day. The movie fades between dark matter density, gas density, stars, metallicity and magnetic field strength. In the last of these, field lines indicate the directions of the magnetic field. Click here to see a higher resolution version, and here to see an even higher resolution version!

Movie showing the evolution of a simulated halo from very early times to the present day, showing dark matter density (left), gas density (middle), stars (right).

Face-on Integral field Spectroscopy galactic maps (Pinna et al. 2023 (subm.))

The series of images below show galactic maps of various quantities for 24 Auriga simulations, as if they were viewed face-on by an Integral Field Unit Spectroscopic instrument. The maps were produced using a pixel size of 0.5 kpc and a Voronoi binning to 900 particles per bin for an aperture of 50 kpcx50 kpc in size. The quantities are indicated underneath each image and the Hubble type of each galaxy is indicated on the top of each panel. The edge-on counterparts of these maps are shown in Pinna et al. (2023, subm.), and the galaxy properties are listed in Table. 1 of that paper.

Surface brightness maps.

Caption.

Metallicity maps.

[Mg/Fe] maps.

Caption.

Stellar age maps.

Line of sight velocity maps.

Caption.

Velocity dispersion maps.

Third moment velocity maps.

Caption.

Fourth moment velocity maps.