This movie is a fly-through of an evolving population of galaxies in the early universe, made from the Renaissance Simulations (e.g., O'Shea et al. 2015 and many other papers). The simulation is made by the NCSA Advanced Visualization Laboratory, and narrated by me. It shows how star formation and feedback is intermittent in galaxies in the early universe, and also breaks down the movie (a mult-field volume rendering) to show where hot gas, metals, neutral hydrogen, and other components are located (and often co-located).
The movie below (created by Britton Smith) shows the formation of the first metal-enriched star in the universe, and comes from our paper "The first Population II stars formed in externally enriched mini-haloes", by Britton Smith et al. The left panel shows the gas density and the right panel shows the temperature. The first Pop III star forms at redshift 23.7 and shines for roughly 4 Myr before exploding as a core-collapse supernova, at which time the right panel changes to show the metallicity. About 60 Myr after the first supernova, the movie zooms in on the formation site of the second Pop III star. Shortly after it explodes, the supernova blast-wave collides with a nearby halo moving in the opposite direction. The passing blast-wave and a merger event induce turbulence, which allows the metals from the supernova to mix into the center of the halo. The movie then continues to zoom in to follow the dense gas in the core of the halo as it undergoes runaway collapse. For much of the collapse, we only see the central core become smaller and denser. Eventually, dust cooling becomes efficient, causing the gas to cool quickly and fragment into multiple clumps. The movie ends at a scale of 100 proper AU looking at the pre-stellar cores that will go on to form the first low-mass stars. I strongly suggest watching this movie in "full screen" mode, and you can also see it on vimeo.com.
A movie of the evolution of 24 high resolution dark matter-only simulations of the formation of Milky Way-sized galaxies. This movie was produced by my collaborator Dr. Brendan Griffin as part of the Caterpillar Project. The Caterpillar Simulations are high resolution dark matter simulations of the formation of Milky Way-sized galaxies, and are intended to be the platform for a wide variety of studies relating to galaxy evolution. The movie embedded below shows the evolution of these dark matter halos over the age of the universe, and it highlights the differences in formation history between galaxies that will, at the present day, be approximately the same mass. (Note: the movie is best viewed full screen and at the highest possible resolution.)
Several images from the Blue Waters "rare peak" galaxy formation simulation, first presented by Xu et al. and Chen et al.. These images show (in order of appearance) the projection of baryon density, baryon temperature, and metallicity along the line of sight through the adaptively refined region of the simulation. The HII regions surrounding these galaxies, as well as the metal-enriched outflows from the same objects, can clearly be seen. (Images c/o Hao Xu, Pengfei Chen, and Michael Norman at UCSD; John Wise at GATech; and Brian O'Shea at MSU).
A variety of movies and images from an Enzo AMR cosmology simulation,
showing baryon properties as well as grid structure. This
includes both movies and stills for the entire simulation
volume and also movies/stills that zoom in on a single
Click on the image below to go to a page of movies, images,
files, and yt scripts from
Movies that illustrate the
behavior of Enzo's
block-structured adaptive mesh refinement capabilities using the
Sedov-Taylor and Kelvin-Helmholtz test problems. Click on
each of the
images below to go to a page of movies, Enzo parameter
files, and yt scripts for
each test problem.
Video of a set of simulations showing the birth, life, and death of the very first star in the (simulated) Universe. Visualization by Matt Turk, Sam Skillman, John Wise, and Mark SubbaRao. Simulations by Matt Turk, Jeff Oishi, Tom Abel, Greg Bryan, John Wise, and myself. See the text accompanying this video on youtube for more information. (Also, make sure to watch this in HD!)
Videos of a simulation of the formation of a Milky Way-like galaxy, done by me using the Enzo code and visualized by the NCSA Advanced Visualization Laboratory, are featured on the James Webb Space Telescope Website. The movies are embedded below.
The image shown below is a volume rendering from a simulation of the formation of a
binary Population III stellar system. Population III stars are the first
stars to form in the universe, and contribute to the formation of galaxies
like our own Milky Way. In this image, the field of view is about 2,000
astronomical units across (one astronomical unit is the distance between
the Earth and the Sun, or about 93 million miles). The two yellow clumps
are the gas clouds in which the two stars are being born. The image shown
taken from a simulation done by Matthew Turk, Tom Abel, and Brian O'Shea, and
was part of a research project that was published in the journal Science. The image was created by Ralf Kaehler.
(Click on the image to view a larger version.)
The image shown below is a volume rendering from one of the
largest AMR cosmological simulations done to date, and shows structures
in the universe on the largest scales. The field of view is approximately
two billion light years across, and the image shows the the "cosmic web" of
filaments that are formed, and the clusters of galaxies that form at the
intersection of these filaments. This simulation has been used
as a part of
that have all been published in
The Astrophysical Journal.
The image was created by
Matt Hall at the
National Center for Supercomputing Applications.
(Click on the image to view a larger version.)