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Map of major galaxy superclusters, clouds and filaments on celestial sphere?



 
 
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Old December 17th 05, 11:43 PM posted to sci.astro.amateur
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Default Map of major galaxy superclusters, clouds and filaments on celestial sphere?

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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