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Alignment of clusters and galaxies on scales up to 0.1 C
Tully, R. B.
AA(Hawaii, University, Honolulu)
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 303, April 1, 1986, p. 25-38. (ApJ Homepage)
Publication Date:
NASA/STI Keywords:
Galactic Clusters, Galactic Structure, Spatial Distribution, Astronomical Maps, Density Distribution, Red Shift, Virgo Galactic Cluster
Bibliographic Code:


Three remarkable properties of the large-scale distribution of galaxies appear to have escaped attention: (1) The structure in the vicinity of the Virgo Cluster that has traditionally been called the Local Supercluster seems to be appended to a very large agglomeration that includes the Coma/A1367, Hydra-Centaurus, Perseus-Pisces, and Pisces-Cetus Superclusters. The whole entity includes 48 known Abell-class clusters, 10 to the 17th to 10 to the 18th solar masses, and extends across a diameter of 360/h75 Mpc of about 0.09 c. (2) This very large structure is flattened, with axial ratios 4:2:1; and the pole, defined by the orientation of the short axis, is coincident with the pole of the plane of the traditional Local Supercluster to within 10 deg. (3) Within 40/h75 Mpc of the earth's location, where there is reasonable completion, there is a suggestion that the distribution of galaxies is stratified into four layers. Within a radius of 0.1 c, there are two other very large superclusters and many voids.

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