Sky distribution of approximately 30000 galaxies from CfA Catalog. Plot is made in galactic coordinates.
3D distribution of approximately 30000 galaxies from CfA Catalog. The Milky Way is in the center of the plot. Its plane is horizontal which can be seen as so-called zone of avoidance – dark empty horizontal cones. The verical scale of the plot is 160 Mpc (qo=0.5, Ho=100). Note the numerous “fingers of God” – the chains of galaxies which pointing to the Milky Way (the well know artefact which is explained by velocity dispersion in galaxy clusters. See next plot). Note also the long curved chain of galaxies in the upper part of the plot – the famous Great Wall.
Copenhagen University Observatory Large Scale Structure page with lots of visualisations of galaxy distribution in CfA catalog.
Distribution of galaxies and galaxy clusters in the Local Supercluster region. (By Brent Tully and Michelle Mercer).
APM Galaxy Survey Page: describes the largest sky galaxy survey to date covering about 1/10 of the sky and consistiing of over 2 million galaxies (contains pictures of the distribution of galaxies on the sky)
3D picture of nearby Universe: This page contains a couple of 3D contour plots from Mike Hudson’s paper in MNRAS which depicture locations of several close (r < 80/h Mpc) galaxy clusters and superclusters
I’m grateful to A.A. Vedenov who inspired (though not directly) this work.
|Andrey Kravtsov (University of Chicago)|