LABYRINTH 3D Visualisations of the Distribution of Galaxies and Large-Scale Structures Tony Fairall...

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Galaxies are shown as dots. Data may be viewed from any specified position, looking in any specified direction. Major features/voids labelled.

Transcript of LABYRINTH 3D Visualisations of the Distribution of Galaxies and Large-Scale Structures Tony Fairall...

LABYRINTH 3D Visualisations of the Distribution of Galaxies and Large-Scale Structures Tony Fairall Software by Carl Hultquist and SameshamPerumal Depts. of Astronomy and Computer Science University of Cape Town The data used in this presentation are galaxies with available redshifts less than 7500 km/s, as drawn from the NASA Extragalactic Database, supplemented by 6dF. Galaxies are shown as dots. Data may be viewed from any specified position, looking in any specified direction. Major features/voids labelled. However, distances may be colour coded for red-to blue Chromostereoscopy. Or white-to-blue Chromostereoscopy , With the program running, you can fly around in real time Although this demonstration uses a sequence of still frames From the position of our Local Group, we can look at clusters and large-scale features The Virgo and Coma Clusters The Fornax Cluster The Centaurus and Hydra Clusters Cluster ACO 3627 in the heart of the Great Attractor region The Local Void, leading into the more distant Microscopium Void The southern extension of the Local Supercluster towards Centaurus The Perseus-Pisces Filament Galaxies can also be shown as billboards One can also fly around (as with the Swinburne visualisation) Back to galaxies shown as points But they can also be enclosed in Tully bubbles to reveal large-scale structures The transparency of the bubbles can be varied They can even appear solid in white/blue 3D Or red-to-blue Chromostereoscopy 100 1 Large-scale structures are incompletely mapped across the Zone of Avoidance We shall now fly to the centre of the dataset, via the Microscopium and Local Voids We shall fly to the centre of the data set through the Great (Coma) Wall The Local Supercluster is best seen when only denser large scale structures are shown.