Filamentary galaxy clustering - A mapping algorithm

Details Filamentary galaxy clustering - A mapping algorithm Filamentary galaxy clustering - A mapping algorithm

Oct 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...273...16m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 273, Oct. 1, 1983, p. 16-23.

Astronomy and Astrophysics

Astrophysics

40

Algorithms, Astronomical Maps, Cosmology, Galactic Clusters, Astronomical Catalogs, Autocorrelation, Computerized Simulation, Spatial Distribution

Scientific paper

The Shane-Wirtanen galaxy count catalog gives the strong visual impression of large-scale linear or filamentary features in the galaxy distribution. Computer simulations of hierarchical galaxy clustering constructed to have two-, three-, and four-point autocorrelation functions like those observed do not have such an appearance. A simple and well-defined algorithm which maps and quantifies filamentary structure is developed. It appears to be successful in identifying those filaments which the eye picks out in the Shane-Wirtanen catalog and thus provides an objective tool for studying these structures. A catalog and map of the most prominent Shane-Wirtanen filaments is given. The application of the algorithm to a computer simulation of hierarchical galaxy clustering is described.

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