Physics
Scientific paper
Apr 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..nes.c2007b&link_type=abstract
American Physical Society, 2002 Joint Spring Meeting of the New England , abstract #C2.007
Physics
Scientific paper
The MX Northern Abell Cluster Survey II is the final stage of a program designed to observe rich Abell clusters with m_10 <= 17.0. We present 1542 new galaxy redshifts within 117 R >= 1 Abell cluster fields that have 16.9 <= m_10 <= 17.0, 0^h <= α <= 24^h, -17^rc <= δ <= 90^rc, and |b| >= 30^rc. Of the 117 clusters observed for the MX Survey II, 105 new cluster redshifts were obtained with an average of eight cluster-member galaxy redshifts. We update the m_10 - z estimator for Abell clusters and calculate the spatial number density of Abell clusters to be nc = 8.25 1.9 × 10-6h^3Mpc-3 within z =0.10. All R >= 1 Abell and ACO clusters with measured redshifts were combined to calculate the two-point spatial correlation function ξ (r) = (r/r_0)^γ for the largest complete sample of rich clusters to date. We find 18.6 <= r0 <= 21.0 h-1Mpc and -2.03 <= γ <= -1.95. The slope and correlation length are very robust and remain unaffected by the exclusion of compact and dense superclusters, or by accounting for line-of-sight anisotropies which are explained by the existence of three observationally confirmed and extended superclusters.
Batuski David
Hill John M.
Krughoff Simon
Miller Christopher
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