  We present two new catalogues of superclusters of galaxies out to a redshit
of z = 0.15, based on the Abell/ACO cluster redshift compilation maintained by
one of us (HA). The first of these catalogues, the all-sky Main SuperCluster
Catalogue (MSCC), is based on only the rich (A-) Abell clusters, and the second
one, the Southern SuperCluster Catalogue (SSCC), covers declinations delta <
-17 deg and includes the supplementary Abell S-clusters. A tunable
Friends-of-Friends (FoF) algorithm was used to account for the cluster density
decreasing with redshift and for different selection functions in distinct
areas of the sky. We present the full list of Abell clusters used, together
with their redshifts and supercluster memberships and including the isolated
clusters. The SSCC contains about twice the number of superclusters than MSCC
for delta < -17 deg, which we found to be due to: (1) new superclusters formed
by A-clusters in their cores and surrounded by S-clusters (50%), (2) new
superclusters formed by S-clusters only (40%), (3) redistribution of member
clusters by fragmentation of rich (multiplicity m > 15) superclusters (8%), and
(4) new superclusters formed by the connection of A-clusters through bridges of
S-clusters (2%). Power-law fits to the cumulative supercluster multiplicity
function yield slopes of alpha = -2.0 and alpha = -1.9 for MSCC and SSCC
respectively. This power-law behavior is in agreement with the findings for
other observational samples of superclusters, but not with that of catalogues
based on cosmological simulations.
