To further our understanding of the Great Attractor ( GA ) , we have undertaken a redshift survey using the 2dF on the AAT .
Clusters and filaments in the GA region were targeted with 25 separate pointings resulting in approximately 2600 new redshifts .
Targets included poorly studied X-ray clusters from the CIZA catalogue as well as the Cen-Crux and PKS 1343-601 clusters , both of which lie close to the classic GA centre .
For nine clusters in the region , we report velocity distributions as well as virial and projected mass estimates .
The virial mass of CIZA J1324.7–5736 , now identified as a separate structure from the Cen-Crux cluster , is found to be \sim 3 \times 10 ^ { 14 } M _ { \sun } , in good agreement with the X-ray inferred mass .
In the PKS 1343-601 field , five redshifts are measured of which four are new .
An analysis of redshifts from this survey , in combination with those from the literature , reveals the dominant structure in the GA region to be a large filament , which appears to extend from Abell S0639 ( l = 281 ^ { \circ } , b = +11 ^ { \circ } ) to ( l \sim 5 ^ { \circ } , b \sim –50 ^ { \circ } ) , encompassing the Cen-Crux , CIZA J1324.7–5736 , Norma and Pavo II clusters .
Behind the Norma Cluster at cz \sim 15000 km s ^ { -1 } , the masses of four rich clusters are calculated .
These clusters ( Triangulum-Australis , Ara , CIZA J1514.6–4558 and CIZA J1410.4–4246 ) may contribute to a continued large-scale flow beyond the GA .
The results of these observations will be incorporated into a subsequent analysis of the GA flow .