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Title:
More about clustering on a scale of 0.1 C
Authors:
Tully, R. Brent
Affiliation:
AA(Hawaii, University, Honolulu)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 323, Dec. 1, 1987, p. 1-18. (ApJ Homepage)
Publication Date:
12/1987
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Astronomical Models, Galactic Clusters, Milky Way Galaxy, Astronomical Maps, Density Distribution, Percolation, Scale (Ratio), Tables (Data)
DOI:
10.1086/165803
Bibliographic Code:
1987ApJ...323....1T

Abstract

A previous suggestion is substantiated that our Galaxy is appended to what is now called the Pisces-Cetus Supercluster Complex. The evidence is twofold. (1) With a sample of rich clusters that is complete to beyond the mean distance of the complex, there is percolation across ≡300 h75-1Mpc at a separations scale length of 38 h75-1Mpc. (2) A one-dimensional correlation analysis confirms that rich clusters within the complex lie preferentially in a plane (or possibly in strata) parallel to the plane of the Local Supercluster as defined by nearby galaxies. The main plane of the Pisces-Cetus Supercluster Complex, centered ≡200 h75-1Mpc away, is coincident with the principal plane of the Local Supercluster. The thickness of the Pisces-Cetus main plane has FWHM ≡ 40 h75-1Mpc. The coincidence of the two planes of structure on such radically different scales suggests there is a physical connection. It would follow that the structure on a scale of 0.1 c has a physical significance.

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