Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.258....1l&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 258, no. 1, Sept. 1, 1992, p. 1-22. Research supported
Astronomy and Astrophysics
Astronomy
170
Astronomical Catalogs, Galactic Clusters, Magnitude, Statistical Analysis
Scientific paper
The Edinburgh-Durham Cluster Catalogue (EDCC) is presented. This is the first machine-based, objectively selected sample of clusters of galaxies. It consists of 737 clusters or groups of all richnesses, over 0.5 sr of sky, centered on the South Galactic Pole. The primary galaxy dataset for the cluster survey is the Edinburgh-Durham Southern Galaxy Catalogue. The EDCC was constructed using an automatic peak-finding algorithm and is complete to m10(bj) = 18.75. In a comparison with the Abell clusters in the same region 80 percent of their rich clusters nominally brighter than the completion limit are found in addition to many new systems. This suggests that the EDCC is 90-percent complete for Abell-type clusters. The Abell magnitude system is argued to be biased toward bright magnitudes for most of their clusters, and that their richness estimates are prone to a larger uncertainty than they suggest.
Collins Charles Aloysius
Guzzo Luigi
Lumsden Stuart L.
Nichol Robert C.
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