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I am looking for a map that would show in a 2-D projection of the major
superclusters, galaxy clouds and filaments. Tirion's Cambridge Star Atlas has an equal-area galactic coordinate map of the distribution of bright galaxies. I am interested in associating the major groups of bright galaxies shown in the chart with superclusters and filaments. The location of some supercluster groups and/or galaxy clouds on Tirion chart are straight-forward, like the Virgo supercluster and the Sculptor Group. As background, this page from Powell's "An Atlas of the Universe" website shows in 3-D nearby superclusters, clouds and filaments. http://www.anzwers.org/free/universe/superc.html Additionally, I have playing around with a Starry Night program called Galaxy Explorer, which contains the triaxial positions of 28,000, assembly by R.B. Tully, co-creator of the Tully-Fisher relationship. By using this VRML type 3-D software, I have gained some understanding of the 3-D position of some of the major bright galaxies and their associated superclusters, but I am having trouble relating those triaxial positions to their positions on the "2-D" celestial sphere. To some extent, the question can be answered by reference to supercluster or cloud name, e.g - Virgo Cluster and Southern Extension Ursa Major Cloud Ursa Major Southern Spur Coma - Sculptor Cloud Leo Spur Centaurus Spur Triangulum Spur Perseus Cloud - but a simple 360 degree chart would be alot easier to visualize their boundaries and overlaps. Any references to websites, atlas charts or journal articles that would contain such a map would be appreciated. - Canopus56 Other refs: Tully R.B. Nearby Galaxies Catalogue. CDS database - http://cdsweb.u-strasbg.fr/viz-bin/Cat?VII/145 |
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